WO2007033915A2

WO2007033915A2 - Floor-type vacuum cleaner

Info

Publication number: WO2007033915A2
Application number: PCT/EP2006/066210
Authority: WO
Inventors: Bernhard Scheuren; Markus Koch; Stephan Dieudonné; Jürgen ZILS
Original assignee: Vorwerk & Co. Interholding Gmbh
Priority date: 2005-09-23
Filing date: 2006-09-11
Publication date: 2007-03-29
Also published as: CN101312678A; DE102005045543A1; CN101312678B; TWI386181B; EP1945085B1; RU2008115938A; EP1945085A2; WO2007033915A3; TW200722026A

Abstract

The invention relates to a floor-type vacuum cleaner (1) provided with a suction hose (7) connected thereto. In order to improve said floor-type vacuum cleaner in a large extend, in particular with respect to the connection of the suction hose thereto, the inventive floor-type vacuum cleaner (7) comprises, outside of the rotatable joint of a connection axis (x), a rigid hose supporting element (14) displaceable with respect to the rigid rotatable joint supporting element (10) when it is coupled thereto.

Description

Canister

The invention relates to a vacuum cleaner with a connected to a connection axis rotatable by 360 ° suction hose.

Canister vacuum cleaner of the type in question are known. These have a generally by means of the connected suction hose behind the user herziehbares and corresponding rollable basic unit. The suction hose is for so-called island eyes, d. H. For sucking around the area of the basic unit connected rotatably to this. In this regard, further hose connections are known, which allow a rotation through 360 ° to the connection axis. A related suction hose connection is known, for example, from EP 0 711 526 B1.

In view of the above-described prior art, a technical problem of the invention is seen as to further improve a vacuum cleaner of the type in question, in particular with regard to the connection of the suction hose to the vacuum cleaner.

This problem is solved first and foremost by the subject matter of claim 1, wherein it is pointed out that the suction hose has a rigid hose holding element outside the rotary connection of the connection axis, which is movable relative to a rigid rotary connection holding element while being coupled thereto. According to this embodiment of the invention, a suction hose connection to the vacuum cleaner is provided, which offers improved handling of the vacuum cleaner. Due to the achieved relative mobility of the suction hose to the outside of the rotary connection of the connection axis rigidly formed rotary connection support member guided in the Drehanschluss- support member rotational movement of the suction hose to the

Hose axis possible without causing a twisting of the suction hose leads. Such a hose twist is transmitted directly to the rotary connection of the connection axis as a result of the coupling between the hose-holding element and the rotary connection-holding element, wherein an uncontrolled setting up of the suction hose from its selected orientation can be further counteracted by the inventive design. Furthermore, by the coupling between hose-holding element, and the rotary connection-mounting element tensile loads, which are transmitted via the suction hose to the vacuum cleaner, taken specifically and passed through the rotary connection in the Bodenstaub- sucker. Accordingly, the coupling acts as a strain relief.

The subjects of the further claims are explained below with reference to the subject-matter of claim 1, may also be of importance in their independent formulation.

Thus, it is further proposed that the rotary connection-holding element surrounds the hose at two spaced over the length of the hose areas. In this case, the tube is rotatable relative to the one region of the rotary connection-holding element by means of the tube-holding element, while the tube is connected to the tube in a rotationally fixed manner in the region of the section of the rotary connection-holder element which is distanced therefor. The latter area is preferably the central connection section of the vacuum cleaner that is penetrated centrally from the connection axis. This rotary connection-mounting element section provides the 360 ° rotational mobility of the suction hose to the vacuum cleaner, according to the non-rotatable arrangement of suction hose and support member in this area only one seal must be provided, namely between the connection-side rotary connection support member and the corresponding receptacle of the vacuum cleaner , More preferably, the areas of the rotary connection-mounting member are angularly spaced from each other, this is preferably in a curved course of the hose. So these areas or their Axes an obtuse angle to each other include, such as an angle of 90 ° to 120 °, preferably 90 ° to 105 °, further for example 100 °, 95 ° or even 102 °. According to this embodiment of the invention, the suction hose protrudes in a conventional head-side connection training on the floor vacuum cleaner in approximately horizontal. The tensile forces introduced via the suction hose during operation are transmitted mechanically to the vacuum cleaner via the hose support element and the area spaced angularly from the connection section of the rotary connection support element. A torque of the suction hose around the hose axis is converted into a direct rotational movement about the connection axis of the cylinder vacuum cleaner, which connection axis according to the embodiment of the rotary connection support member to the hose axis includes the same angle as the two areas of the rotary connection support member to each other. Accordingly, using the further preferably in a known manner flexible trained suction hose, a torque around the

Hose axis in a rotary displacement of the suction hose, together with the rotary connection support member to the more preferably vertically aligned connection axis of the vacuum cleaner. The embodiment according to the invention also proves to be advantageous if, as further proposed, the hose has an electric cable and the electric cable is firmly connected to the hose retaining element. This electrical cable is preferably outwardly guided along the suction hose and terminates in the region of the rotary connection-mounting element assigned to the connection axis. The electrical interface to the vacuum cleaner is formed in this area, which latter area according to the embodiment according to the invention forms a double interface, namely on the one hand an electrical interface and on the other hand a suction duct interface. The electrical interface can in the simplest way slip rings and interact with these electrical contacts. As an alternative to the external electrical cable guide, the suction hose can also have integrated electric cables. In the case of the external arrangement, it is further provided that the electrode Rokabel has a length supply loop in the distance region between the distanced areas of the rotary connection support member. Correspondingly, the electric cable is arranged in the radius-inner region of the section of the suction hose which runs in a curved manner between the two regions of the rotary connection-holding element that are distanced to one another. Alternatively, the electric cable can also run in the radius outer region of the hose bend. In this case, can be dispensed with a formation of a length supply loop. In a further alternative refinement, the end of the suction hose assigned to the connection plane can be rotatable about the connection axis in a further coupling element relative to the portion of the rotary connection support element associated with this region, according to which a rotational movement of the suction hose about its hose axis is merely coupled to one another Rotation of the free end of the suction hose around the connection axis running at an acute angle to the hose axis is effected without the rotary connection support element being dragged along in the process. Accordingly, the tube rotational movement about the tube axis is not converted into a rotational movement of the suction tube around the preferably vertically aligned connection axis. It is also possible for the rotary connection-holding element and the hose-holding element to be rotationally coupled to one another in an axial series connection for pivoting the tube from a position aligned with the axis of rotation of the rotary connection-holding element into an angled position to the axis of rotation of the rotary connection-holding element. It is thus created a knee joint-like support member, which is composed essentially by the rotary member support member and the axially spaced-apart tubular support member in this extended position. The suction hose is in this case mounted loosely on the hose-holding element, that is held rotatable relative thereto. Also, the hose-holding member may be provided with a relation to the suction hose enlarged opening dimension, so that in addition to the free rotational mobility of the suction hose in its axial extent in the region of Hose holding element is movable. In the region of the suction hose end, it is fixed, ie non-rotatably connected to the rotary connection-mounting element. An introduction of force when the vacuum cleaner is pulled over the suction hose takes place approximately in the horizontal direction, with the hose holding element being swiveled away approximately 90 [deg.] From the rotary connection holding element. The power transmission takes place mechanically via the rotary connection mounting element into the device. When pulling the suction hose automatically aligns essentially horizontally. In so-called island eyes around the cylinder vacuum cleaner, the torque around the connecting axle is likewise transmitted by the suction hose via the mounting elements. Rotary movements of the suction hose around the hose axis are coupled to a rotational movement of the rotary connection holding element fastened to the suction hose about the connection axis. In this case, the suction hose is controlled vertically, for which the rotationally coupled articulation of the hose-holding member is used on the rotary connection-mounting element. In a preferred embodiment, it is further provided in this regard that the rotary connection-mounting element has coupling struts pointing away from the vacuum cleaner, which are coupled to coupling struts of the hose-holding element pointing towards the vacuum cleaner. The pivot axis formed in the connection area of the coupling struts extends transversely to the connection axis of the rotary connection. In a preferred embodiment, the rotary connection-mounting element and the hose-holding element can rotate relative to each stop-stop, wherein a stop-limited position is preferably the vertical position, in which the tube axis is aligned with the connection axis of the rotary connector. The second stop-limited position is to be brought about by pulling the suction hose angled position, preferably horizontal position of the suction hose. As an alternative, the tube holding element and the rotary connection holding element can be rotatable relative to each other about the tube axis, wherein both the tube holding element and the rotary connection holding element have a longitudinal direction of the tube Have Saugleitungsabschnittes extending curvature section. In a tensile load position of the suction hose, these curvature portions comprise approximately 90 °, so that a substantially horizontal alignment of the suction hose is achieved. In this embodiment, the hose-holding element is non-rotatably connected to the free end of the suction hose, according to which rotational movements of the suction hose around the hose axis are converted into a rotational movement of the hose-holding element. The latter in turn is rotatable to the rotary connection support member. In conjunction with the curvature section of the hose-holding element, a controlled placement of the suction hose out of the horizontal position results when the suction hose is rotated about the hose axis. The rotary connector support member shapes the suction line interface to the cylinder vacuum cleaner. When arranging a preferably laid outside electrical cable facing the connection axis in the region of the hose-mounting member and the electrical interface is preferably formed in the form of sliding contacts. The electric cable, which preferably runs on the outside lying outside, is set in such a way that, if necessary, it can track the movements and twists in the area of the suction connection while using up a length supply loop. The curvature of the hose-retaining element and the rotary connection

Retaining element preferably corresponds to each half of a right angle, wherein further the two support members may be interconnected by a coupling element. The latter is in this case formed so that this allows the rotational movement of the two support members to each other. In this regard, it is further provided that the hose-holding member and the rotary connection-mounting member are rotatable against each other over a limited angular range, so preferably over an angular range of about 90 ° to 180 °, more preferably by an angular range of 150 °. Until this rotation limit stop is reached, twisting the suction hose about the hose axis causes the hose holding element to rotate toward the rotary connection holding element, which results in a make the hose-holding member and this causes the suction hose. This rotation stop limit is selected so that in this case the tube axis is aligned approximately in the direction of the connection axis in the region of the rotary connection, according to which a further acting around the tube axis on the suction hose torque causes a rotation of the entire suction port to the connection axis of the device. Alternatively, both the hose-holding element and the rotary-connection-mounting element may have a curvature section extending in the longitudinal direction of the hose or a suction line section, wherein the curvature sections of hose-holding element and rotary connection-mounting element are telescopic, in the sense of an angle bisector between the connection plane of the rotary connection support member to the vacuum cleaner and a plane perpendicular to the hose axis outside of the hose support member to each other. According to this embodiment, a controlled setting up of the suction hose under rotational load, that is achievable upon rotation of the suction hose to the hose axis. For this purpose, the suction hose is firmly connected to the hose-holding element. A proposed electric cable is preferably laid outside along the suction hose in this embodiment. The telescoping takes place in accordance with the radius of curvature of the curvature sections which are pivotable relative to each other about a telescoping axis aligned transversely to the connection axis. By introduction of force when pulling the vacuum cleaner over the suction hose, a telescopic extension is achieved over the curvature region by the curvature portion of the hose-holding member is pivoted about the telescopic rach. In this case, the angle enclosed between the connection axis and the tube axis is reduced, preferably up to an angle of approximately 90 °. As a result, an approximately horizontal orientation of the suction hose is achieved when pulling. In the case of so-called island eyes, the complete connection, including the suction hose, turns around the connection axis. If the suction hose is rotated about its hose axis, this torque causes a controlled raising of the hose under telescoping ringing of the entire curvature section, this preferred up to a stop-limited position in which a part of the torque is transmitted to the connection axis, which then causes the rotation of the entire terminal to the connection axis. Preferably, in this case the telescopic axis is provided in the interior of the angle, which is approximately as an angle bisector between the tube axis during travel and the connection axis when island eyes. The angle change is preferably up to 90 °, more preferably less than 90 °, for example 60 ° or 70 °.

In order to prevent twisting of the suction hose during use, according to the invention, the rotational movement of the hose is converted to the hose axis in a direct rotational movement about the connection axis, either by torque transmission using a flexible hose or by using the torque for the controlled straightening of the hose so as to lay the direction of the torque in the direction of the connection axis. For suction hoses with integrated or externally routed electrical cables, only one slip ring package is required in the area of the mounting plane. In the usual train operation, at least the subsequently facing tube section extends approximately in a horizontal. All pivotal / tilting movements of the suction hose are converted into controlled rotational or Aufschwenkbewegungen, according to which, in particular, the suction power impairing buckling of the suction hose, as it may happen especially in a twisting thereof, counteracted.

The invention with reference to the accompanying drawings, which only illustrates several embodiments, explained in more detail. It shows:

1 is a perspective view of a vacuum cleaner with a suction hose connected thereto, a suction hose

Connection according to a first embodiment concerning; FIG. 2 shows the suction hose connection in a perspective side view; FIG.

3 shows the schematic section along the line III-III in Fig. 2.

FIG. 4 is a representation corresponding to FIG. 2, but relating to a second embodiment; FIG.

5 shows the section along the line V-V in Fig. 4.

6 shows in a further perspective detailed view of the suction connection in a third embodiment with an approximately horizontal alignment of the suction hose;

FIG. 7 shows the schematic section according to the line VII - VII in FIG. 6; FIG.

FIG. 8 shows the embodiment according to the representation in FIG. 6; FIG. but in the upright position of the suction hose;

9 shows a further embodiment in a perspective side view;

10 shows the longitudinal section through the Saugschlauchanschluss as shown in Fig. 9;

FIG. 11 shows a representation corresponding to FIG. 9, but with the suction hose installed; FIG.

FIG. 12 shows a representation according to FIG. 9 in a further embodiment; FIG. FIG. 13 shows the longitudinal section through the suction hose connection according to FIG. 12; FIG.

FIG. 14 is a representation corresponding to FIG. 12, but with the suction hose erected. FIG.

Illustrated and described is first with reference to FIG. 1, a vacuum cleaner 1. This is designed as a towing device and has a mobile on wheels 2 motor housing 3. In the latter, an unillustrated fan motor is provided.

The motor housing 3 has in the illustrated embodiment, a pivotable motor housing flap 4, which is in the illustrated closed position in latching connection to the motor housing 3. To open the flap 4, a handle 5 is provided on an end face of the motor housing 3.

After opening the flap 4, a chamber for receiving a dust filter bag, not shown, is exposed.

The power is supplied via an electric cable, not shown, which initially serves to supply the integrated in the housing 3 of the vacuum cleaner 1 electrical components.

On the housing 3 or on the flap 4, a connection section 6 is provided, which serves to connect a suction hose 7 to the vacuum cleaner 1. This suction hose 7 preferably forms the connection to a likewise not shown, provided with a device handle and handle suction nozzle, which may also have an electric motor, for example, to drive bristle rollers. Accordingly, the suction hose 7 is provided with an electric cable 8 which, in the illustrated embodiments, is guided outside the suction hose 7 along the same. The connection portion 6 of the suction hose 7 is formed at low cost production so that the driving characteristics of the vacuum cleaner 1 and beyond the handling of the vacuum cleaner 1 by the user is supported in approximately optimal manner. In the usual way, the connection section 6 can be detachably arranged on the vacuum cleaner 1 or on the flap 4. This connection section 6 opens on the ceiling side of the vacuum cleaner 1 in the flap 4 and is rotatable about a central, vertical connection axis x through 360 °, in particular to enable a so-called island suction, in which, if necessary, the floor to be cleaned is maintained around the vacuum cleaner 1 when it is stationary is cleaned.

FIGS. 1 to 3 show a first embodiment of such a connection section 6. The suction hose 7, which is formed in the usual way as a flexible hose, extends into a horizontally aligned connection region 9, which forms the interface to the vacuum cleaner 1. Accordingly, the cross section of the free, the vacuum cleaner 1 facing suction hose end is aligned in a horizontal plane.

The device-side end of the suction hose 7 is gripped by a rotational connection-holding element 10, which, viewed over the length of the suction hose 7, has two areas 11 and 12 which are distanced to one another. Both rotary connection-holder element regions 11 and 10 are ring-shaped and connected to each other via a with respect to a side view of FIG. 2 L-shaped holder 13, wherein the legs of the holder 13 externally in an approximately radial orientation, the annular regions 11 and 13 carry. The latter are at a curved course of the suction hose 7 angularly spaced from each other, so under inclusion of an angle α of about 95 °. The vacuum cleaner 1 or the housing 3 facing the end of the suction hose 7 is rotationally fixed in the lower portion 11 of the Drehanschluss- support member 10, wherein further in this area means are provided which the sealing of the 360 rotatably supported around the connection axis x Ensure rotary connection support member 10. The suction pipe portion formed in the suction hose 7 continues to be located in the housing 3 beyond the interface portion formed by the lower portion 11 of the rotary joint holding member 10.

Furthermore, in the region 11 of the rotary connection-mounting element 10, an electrical connection, which is not illustrated graphically in detail in the first exemplary embodiment, is provided, in particular in the form of slip ring contacts. Such an arrangement is shown schematically in Fig. 5 with reference to a second embodiment.

The electric cable 8 guided externally along the suction hose 7 opens into the region 11 of the rotary connection support element 10 and is here electrically connected to the slip ring contacts. Corresponding to the suction hose 7, the electric cable 8 is also non-rotatably connected to the rotary connection-mounting element 10 in the region 11 with respect to a rotation about the connection axis x.

If the region 11 of the rotary connection-mounting element 10 for the rotationally fixed receiving the associated end of the suction hose 7 diametrically matched to the outer diameter of the suction hose 7, so has the angularly removed for this purpose area 12 of the rotary connection-mounting member 10 with respect to an inner diameter an excess over the suction hose Outside diameter.

In the opening of the region 12 of the rotary connection-mounting member 10 is a coupled with this hose-holding member 14 a. This is on the jacket outer wall of the suction hose 7 seated firmly connected to the suction hose 7, however, in the annular region 12 of the rotary connection support member 10 rotatably, but not axially displaceable held (see Fig. 3).

The mantelaußenwandig along the suction hose 7 guided electric cable 8 is tied by the hose-holding member 14; is correspondingly rotatably connected in this section with the suction hose 7.

In order to hold the hose-holding element 14 in the rotary connection-mounting element 10 or its region 12, the hose-holding element 14 has a radially projecting collar 15, which rests in a correspondingly shaped inner annular groove 16 of the region 12. Collar 15 and annular groove 16 are oriented here on the hose axis y oriented approximately horizontally in this region.

The electric cable is arranged in the radius inner region of the curved suction hose 7 and has a length supply loop 17 in the distance region between the distanced regions 11 and 12 of the rotary connection support element 10.

An introduction of force during the usual pulling of the vacuum cleaner 1 via the suction hose 7 takes place approximately in the horizontal direction, wherein the power transmission takes place mechanically via the hose-holding element 14 and the rotary connection-mounting element 10 on the vacuum cleaner 1. Upon rotation of the connection section 6 about the connection axis x, for example in so-called island eyes, the entire rotary connection support element 10 and the hose support element 14 and the suction hose 7 rotate about the connection axis x, with the hose orientation remaining approximately horizontal. A rotation of the suction hose 7 about its hose axis y is due to the flexible design of the suction hose 7 from the hose axis y on the Transmission axis x transmitted, since the hose-holding member 14 is freely rotatably supported in the region 12 of the rotary connection-mounting member 10. The rotation of the suction hose 7 about the hose axis y is traced by the outside of the hose support member 14 fixed electrical cable 8, while due to the rotation of the hose axis y on the connection axis x in a rotation of the suction hose 7 about the hose axis y of the entire connection section 6 rotates with Drehanschluss- support member 10 and suction hose 7 about the connection axis x. A hose rotation about the hose axis y is consequently converted into a rotation of the entire connection section 6 about the vertically aligned connection axis x.

FIG. 4 shows an alternative embodiment of the connection section 6, which is initially formed substantially equal to the embodiment described above. Thus, a rotary connection-mounting element 10 is also provided here, which comprises the suction hose 7 at two spaced over the length of the hose regions 11 and 12, further more equal to the first embodiment in the region 12 remote from the connection area 9 a hose-holding element 14, which is firmly connected to the suction hose 7 is rotatably received.

In contrast to the previously described embodiment, the device facing the end of the suction hose 7 is not rotatably coupled to the region 11 of the rotary connection support member 10, but rather fixed to a coupling element 18 which in turn freely rotatable about the connection axis x in the region 11 of the rotary connection Retaining element 10 is held. Accordingly, the suction hose 7 in both areas 11 and 12 is rotatable relative to the rotary connection support member 10.

The electric cable 8, which is also guided outside along the suction hose 7, opens in the region of the coupling element 18 and is here electrically connected with terseitig molded slip ring contacts 19, which are shown schematically in the sectional view in Fig. 5 connected. According to this embodiment, a coupling of the tube rotation movement and the rotational movement of the electric cable 8 around the connection axis x is achieved.

Also in this embodiment, the force is introduced when pulling the vacuum cleaner 1 via the suction hose 7 approximately in the horizontal direction, wherein the power transmission takes place mechanically via the hose-holding member 14 and the rotary connection-mounting member 10 in the vacuum cleaner housing 3.

A rotational movement of the connecting portion 6 to the device, such as island eyes, is done by rotating the Drehanschluss-Halterungs- element 10 about the connection axis x, wherein the suction hose transmits this movement to the arranged in the connection region 9 coupling element 18 so that a coupled rotational movement of Coupling element 18 and rotational connection holding member 10 is reached.

If the suction hose 7 is rotated about its hose axis y, this torque is transmitted through the suction hose 7 to the coupling element 18, which in this case can rotate about the connection axis x. As a result of this decoupled rotary displacement in the coupling element 18, a rotation of the suction hose 7 about its hose axis y does not lead to a rotation of the entire connection section 6.

Figures 6 to 8 show a third embodiment of a connecting portion 6, which is formed in the form of a joint knee support. Both the rotary connection-mounting element 10 and the hose-holding element 14 are annular and each have mantelaußenwan- dig the rings attached and parallel to the respective body axes of

Rotary connection support element 10 and hose support element 14 running coupling struts 20, 21 on. The coupling struts 21 of the hose-holding element 14 point in the direction of the coupling struts 20 of the rotary connection-mounting element 10, wherein in each case two diametrically opposite arranged coupling struts 20 and 21 are hingedly connected to the respective associated coupling strut of the other support member. For this purpose, in the illustrated embodiment a the free ends of the coupling struts 20 and 21 rotatably connecting axle journal assembly 22 is provided. The pivot axis z thus described extends both transversely to the connection axis x and transverse to the tube axis y.

According to this configuration, the rotary port supporting member 10 and the hose supporting member 14 are rotationally coupled to each other with respect to the connecting shaft x.

The suction hose 7 assumes in a normal working position corresponding to the basic position as shown in Fig. 6 is a curved course between the hose-holding member 14 and the Drehanschluss- support member 10, this including an approximately right angle.

The horizontal alignment of the tube axis y achievable by corresponding pivoting displacement of the tube holding element 14 is stop-limited, for which stop projections 23 are provided on one or both coupling struts 21 of the tube holding element 14, which abut against associated narrow edge edges of the corresponding coupling struts 20 of the rotary connection holding element 10 ,

The inner diameter of the hose-holding element 14 is measured such that the suction hose passing through this element is loosely mounted in this area and is accordingly freely rotatable and displaceably guided in the direction of the hose axis. The free end of the suction hose 7, however, is, as already described in connection with the first embodiment, rotatably connected to the rotary connection-mounting member 10, which latter also has slip ring contacts for the electrical connection of the outside along the suction hose 7 and fixed in the region of the hose support member 14 electric cable 8 for device-side power supply in addition to the usual sealing.

Also in this embodiment, the power transmission takes place when pulling the device via the suction hose 7 via the fixed parts (hose support member 14 and rotary connection-mounting member 10). In such a tensile load, the suction hose and here also the

Hose holding member 14 horizontally. In the case of so-called island eyes, the introduced torque about the connection axis x is likewise transmitted by the holding elements, for example from the suction hose 7 via the hose-holding element 14 to the rotary connection-holding element 10.

Rotary movements of the suction hose 7 about the hose axis y are transmitted by the flexible design of the suction hose 7 in the connection axis x, according to which the rotatably connected to the suction hose 7 rotary connection support member 10 is rotated about the connection axis x, which also in this embodiment over the entire Rotation angle of 360 ° is a constant power supply via the slip ring contacts. The rotation of the suction hose about the hose axis y leads not only to the rotation of the rotary connection support element 10 about the connection axis x but also to a positioning of the suction hose in a position as shown in FIG. 8, in which the connection axis x and the hose axis y are aligned , This position is also limited by stops, for which purpose further abutment projections 24 are provided on the coupling struts 21 of the hose-holding element 14, which cooperate in a blocking manner with edge regions of the coupling struts 20 of the rotary connection-mounting element 10 assigned in the extended position according to FIG. The exemplary embodiments of FIGS. 9 to 14 differ from the exemplary embodiments described above essentially in that the suction hose 7 itself does not pass through the region of the connection section 6. Rather, here ends of the suction hose 7 respectively in the connection area with the hose-holding member 14. The curvature is described in each case partially by the hose-holding member 14 and the other part of the rotary connection-mounting element 10.

For this purpose, both the hose-holding element 14 and the rotary connection-mounting element 10 are provided with a curvature section 25, 26 extending in the longitudinal direction of the suction hose 7 or the suction line section formed thereby, which curvature sections 25, 26 the suction line cross section of the hose 7 to the suction channel interface extend to the housing 3.

In the fourth exemplary embodiment illustrated in FIGS. 9 to 11, the curvature sections 25 and 26 correspond approximately to half the angle enclosed between the tube axis y in traction operation and the connection axis x, which preferably corresponds approximately to 90 °.

The two curved portions 25 and 26 are connected by means of a mutually facing free end portions enclosing retaining ring 27. The latter allows the relative rotational displacement of the hose-holding element 14 to the rotary-connection-holding element 10, which rotational movement is stop-limited around the hose axis y. Thus, a twist angle of at most 150 ° is preferably provided.

The selected connection by means of the retaining ring 27 is formed flow-tight. In train operation and island eyes behaves this connection portion 6 according to the embodiments described above. If the suction hose 7 is rotated about its hose axis y, this first causes the hose support element 14 to rotate about the axis of rotation v extending perpendicularly to the parting line approximately at a 45 ° angle to the connection axis y until the integrated stop is reached. After this, an erection of the suction hose 7 into a position according to FIG. 11 is achieved. The hose axis y is aligned with the connection axis x so that a part of the torque acting on the suction hose 7 is transmitted to the connection axis x, whereafter the suction hose 7 together with the connection section 6 rotates about the connection axis x.

The outside wall along the suction hose 7 and the support members to the connection section 6 guided electric cable 8 is laid with ease, so that the rotation of the support elements to each other does not damage the cable.

Finally, FIGS. 12 to 14 show, in a fifth embodiment, a connection section 6 which also has retaining elements 14 and 10 which have a curved section. These are in this embodiment telescopically over the radius of curvature. In this case, the curved portion 25 of the rotary connection-holding member 10 is immersed in the curved portion 26 of the hose-holding member 14, this with a corresponding sealing of the curved portions against each other.

The support elements are connected to each other via a Gelenkausformung, for which in each case by the hose-mounting member 14 and the rotary terminal support member 10 radially inwardly, ie in the direction of the enclosed angular interior projecting articulated arms 28 and 29 are provided which by means of a pivot pin 22 to each other are connected. The pivot axis z defined by the journal 22 lies approximately as a winch. kelhalbierende between the terminal level of the Drehanschluss- support member 10 to the vacuum cleaner housing 3 and a plane perpendicular to the hose axis y outside of the hose support member 14. The preferred approximately horizontal orientation of the hose axis y in Zugbetrieb the vacuum cleaner 1 is limited in this embodiment stop. For this purpose, the articulated arm 28 of the rotary connection-mounting element 10 has a locking pin 30 oriented parallel to the pivot axis z and lockingly enters the pivoting path of the articulated arm 29 of the hose-holding element 14.

The lengths in the direction of curvature of the sections 25 and 26 are selected so that an angle change between the tube axis y and the connection axis x of up to 90 ° can be achieved.

A rotation of the suction hose 7 about the hose axis y causes in connection with the hose-holding member 14 fixedly arranged on this, the suction hose 7. This pivots the hose-holding member 14 about the pivot axis z in the lower position, d. H. A portion of the torque acting on the suction hose 7 is subsequently transmitted to the connection axis x, whereby the suction hose 7 rotates together with the entire connection section 6 about the connection axis x.

In all the above-described embodiments, twisting of the suction hose around the hose axis y is counteracted. The torque acting on the suction hose is converted into a direct rotational movement about the connection axis x, either using a flexible hose or by utilizing the erecting properties of the suction hose, thus controlling the direction of the torque in the direction of the connection axis x. All solutions require only one slip ring package in the region of the connection level between connection section 6 and vacuum cleaner housing 3.

All disclosed features are essential to the invention. The disclosure content of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application.

Claims

1. A vacuum cleaner (1) with a connected to a connection axis (x) rotatable by 360 ° suction hose (7), characterized in that the suction hose (7) outside the rotary connection of the connection axis (x) a rigid hose-holding element (14) which is movable relative to a rigid rotary connector support member (10) coupled thereto.

2. A vacuum cleaner according to claim 1 or in particular according thereto, characterized in that the rotary connection-mounting element (10) comprises the hose (7) at two over the length of the hose (7) distant areas (11, 12).

3. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the regions (11, 12) are angularly spaced from each other, with curved course of the hose (7).

4. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the hose-holding element (14) at fixed connection to the hose (7) about a hose longitudinal axis (y) rotatably guided in the Drehanschluss- support member (10) is.

5. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the hose (7) has an electric cable (8) and that the electric cable (8) with the hose-holding member (14) is firmly connected.

6. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the electric cable (8) in the distance region between the distanced regions (11, 12) of the rotary connection-mounting element (10) a length supply loop (17) having.

7. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the Drehansschluss-holding element (10) and the hose-holding element (14) are rotationally coupled in axial series connection to each other, to

Pivoting of the hose (7) from a to the connection axis (x) of the rotary connection-mounting member (10) aligned position in an angled to the connection axis (x) of the rotary connection-mounting member (10) position.

8. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the rotary connection-mounting element (10) from the vacuum cleaner (1) facing away coupling struts (20) send on to the vacuum cleaner (1) out send Coupling struts (21) of the hose-holding member (14) are coupled.

9. vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the rotary connection-mounting element (10) and the hose-holding element (14) can rotate against each other limited stop.

10. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the hose-holding element (14) and the rotary connection

Holding element (10) about the tube axis (y) are rotatable relative to each other, wherein both the hose-holding element (14) and the rotary-connection-mounting element (10) have a curvature section (25, 26) extending in the longitudinal direction of the hose (7) or of a suction line section.

11. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the curvature corresponds in each case to half of a right angle.

12. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the hose-holding element (14) and the Drehanschluss-Halterungs- element (10) over a limited angular range are mutually rotatable.

13. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that both the hose-holding element (14) as the Drehanschluss-Halterungs- element (10) in a longitudinal direction of the hose (7) or a Sauglei- processing section extending curvature portion (25, 26), wherein the curvature portions (25, 26) of hose-holding member (14) and rotary connection-mounting member (10) are telescopic, this in the direction of an angle bisector between the terminal level of the rotary connection-mounting member (10) the vacuum cleaner (1) and a plane perpendicular to the hose axis (y) outside of the hose support member (14) to each other.

14. A vacuum cleaner according to one or more of the preceding claims or in particular according thereto, characterized in that the Teleskopierachse lies in the angular interior.

15. A vacuum cleaner according to one or more of the preceding claims or in particular according to that the angular change is up to 90 °.

16. A vacuum cleaner according to one or more of the preceding claims or in particular according to that the angular change is less than 90 °, for example. 60 ° or 70 °.