EP2583607B1 - Vacuum cleaner suction hose - Google Patents

Description

The invention relates to a vacuum cleaner suction tube, comprising a first tube segment, a second tube segment, and a third tube segment, wherein the tube segments are telescopically connected to each other, and wherein the first tube segment between the second tube segment and the third tube segment is arranged.

A vacuum cleaner suction pipe according to the preamble of claim 1, for example WO-A-9624000 known.

Vacuum cleaner suction pipes are known in the art in a variety of configurations. Telescopic vacuum suction tubes offer the advantage that they can be adjusted by changing the length to the size of an operator or to different application situations during use for short or long distances, on the one hand to allow ergonomic operation and on the other hand, a multi-functional application of the vacuum cleaner for various suction tasks to ensure.

Vacuum cleaner suction tubes of this kind usually comprise a plurality of tube segments, which are arranged one behind the other and inserted into one another so that they can be telescoped relative to one another by axial displacement of the tube segments in order to realize the telescoping capability. To change the length of the vacuum cleaner suction pipe, the pipe segments are manually displaced by the operator, i. H. axially into one another or pushed onto each other, For locking a certain position of the pipe segments a variety of locking mechanisms are known, which reliably prevent unwanted relative movement of the pipe segments during use of the vacuum cleaner suction pipe. Often recesses in the walls of the pipe segments are used, which interact with corresponding locking elements on the other pipe segments. For the preparation of the wells in the walls, however, the pipe segments must have a certain minimum wall thickness, which in addition to the cost of materials and the production cost is increased.

In previously known from the prior art vacuum cleaner suction pipes, the position of each pipe segment relative to the subsequent pipe segment be set independently. This has the advantage that the vacuum cleaner suction tube is adjustable in a variety of length configurations. However, there is the disadvantage that for each pipe segment a separate Verrastmechanismus must be provided with locking element, which ensures a locking of the pipe segments and must be locked or opened separately by the operator.

Based on the aforementioned prior art, the present invention seeks to provide a telescopic vacuum cleaner suction tube, which is easy to manufacture and its operation is optimized in terms of telescopability.

The above object is achieved in a vacuum cleaner suction pipe according to the invention.

The three pipe segments of the vacuum cleaner suction pipe are arranged one behind the other, wherein the first pipe segment is arranged in the middle between the second pipe segment and the third pipe segment, the length of the vacuum cleaner suction pipe corresponds to the distance between the end remote from the first pipe segment of the second pipe segment and the remote from the first pipe segment end of the third pipe segment. The second tube segment and the third tube segment can be displaced by manual displacement by the user relative to the first tube element, whereby the length of the vacuum cleaner suction tube is adjustable. The transition regions between the second tube segment and the first tube segment or the first tube segment and the third tube segment are preferably provided with a seal, so that between the outer end of the second tube segment and the outer end of the third tube segment, a continuous dense suction channel for guiding suction air is formed. By "outboard ends" are meant in each case the ends of the second pipe segment and the third pipe segment which are remote from the first pipe segment.

At the pipe segments, a control device is arranged, which mechanically connects the pipe segments together, so that with a manual displacement of the second pipe segment or the third pipe segment relative to the first pipe segment, the respective other pipe segment - the second pipe segment or the third pipe segment - is moved by the control device , Preferably, the control device cooperates with all three pipe segments, for example, by moving the second pipe segment and the third pipe segment and the control device is mounted on the first pipe segment. However, it is alternatively also provided that the control device is arranged only on the second pipe segment and on the third pipe segment.

If a user moves the second pipe segment or the third pipe segment relative to the first pipe segment, ie, in the axial direction away from the first pipe segment or to the first pipe segment, the respective other pipe segment, which is not manually operated by the user, by the control device causes a mechanical interaction, moved. The mechanical interaction of the control device is on the one hand provided such that the movement of the co-moving tube segment in the same direction as that of the manually moved tube segment, on the other hand, however, provided that the movement takes place in opposite directions, so that, for example, if the second tube segment in Direction of the first tube segment is moved, and the third tube segment is moved by the control device in the direction of the first tube segment, whereby the length of the vacuum cleaner suction tube is reduced,

In the displacement of the pipe segments relative to each other, the pipe segments are pushed into each other or each other, so that the vacuum cleaner suction pipe is lengthened or shortened. Preferably, all tube segments are the same length, but more preferably, the first tube segment is twice as long as the second tube segment and the third tube segments, which are the same length.

"Advantageously, the control device is designed with a self-locking, so that a movement of the pipe segments relative to each other by a through the user caused axial displacement force is possible, but in the operation of the vacuum cleaner suction pipe, the self-locking of the control device acts such that an unintentional change in length of the vacuum cleaner suction tube is prevented. By such self-locking an actuating mechanism for the change in length of the vacuum cleaner suction pipe is unnecessary.

According to a first embodiment of the vacuum cleaner suction tube is provided that an actuating mechanism is provided for the control device, so that when unactuated actuating mechanism a relative movement of the pipe segments is blocked to each other and that in manual - actuated by the user - actuation mechanism, a relative movement of the second pipe segment and the third pipe segment is released relative to the first pipe segment. The actuating mechanism acts on the control device such that when the actuating mechanism is not actuated, the control device is blocked in its movement, while the movement of the control device is released by manual operation of the actuating mechanism by a user.

The actuating mechanism, which thus simultaneously serves as a locking mechanism for the relative movement of the pipe segments to each other, thus does not act directly on the pipe segments, but only indirectly via the control device, whereby a movement of the pipe segments is released or blocked. This has the advantage that the walls of the pipe segments no longer need to be provided with notches, whereby the production of the vacuum cleaner suction pipe is simplified.

The actuating mechanism is preferably arranged longitudinally in the middle of the first tube segment, so that a user can, for example, with one hand grip the first tube segment in the amount of Betätigungsmechanisznus to hold the vacuum cleaner suction tube and operate with this hand of the actuating mechanism, at the same time one of Pipe segments, for example, the third pipe segment, can be moved with the other hand. In this case, the second tube segment is moved by the manual movement of the third tube segment via the control device, so as to increase the length the vacuum cleaner suction tube comfortable and easy to extend or decrease.

A further embodiment of the vacuum cleaner suction tube provides that the actuating element is designed as a pressure mechanism. This embodiment has the advantage that the actuating mechanism can be operated by the user with one hand, for example by the first tube segment, to which the actuating mechanism is preferably attached, being gripped by one hand. In this case, the actuating mechanism, for example, with the thumb actuated by pressure, whereby the movement of the pipe segments is released to each other.

Alternatively, the actuating mechanism may also be configured such that the pressure on the actuating mechanism by engaging around the actuating mechanism by a radial force is exerted on the actuating mechanism by the encompassing. Due to the radial force, for example, on at least one spring-mounted handle portion, the actuating mechanism is actuated and released a movement of the pipe segments to each other.

Preferably, with the actuating mechanism actuated, the movement of the tube segments relative to each other, while the movement is blocked when the actuating mechanism is unactuated. For this purpose, the actuating mechanism has, for example, an automatic reset, e.g. by a spring, up.

In order to keep the cross section for the suction channel as constant as possible, it is provided according to a further embodiment that the second tube segment and the third tube segment are attached at opposite ends to the first tube segment. For this purpose, the cross section of the second tube segment and the third tube segment is slightly larger than the cross section of the first tube segment, so that the second tube segment and the third tube segment can each be attached to this at opposite ends of the first tube segment. The first tube segment thus forms the inner tube, on which the second tube segment and the third tube segment can be moved as outer tubes. With a change in length shifts Thus, the first pipe segment within the second and the third pipe segment.

Between the first pipe segment and in each case the third pipe segment or the second pipe segment, a seal is preferably arranged, which seals the suction channel. This is preferably realized as Zwischenstuzen, which simultaneously ensures the leadership of the first pipe segment within the second and third pipe segment. This intermediate piece or the seal is preferably made of a plastic with good sliding properties, such as PTFE, so that a simple displacement of the pipe segments relative to each other is possible.

This embodiment with the first tube segment as the smallest cross section has the advantage that the minimum cross section of the suction channel is the cross section of the first tube segment, since both the cross section of the second tube segment and the third tube segment are slightly larger.

If the vacuum cleaner suction tube telescoped, so changed in length, both the second tube segment and the third tube segment is preferably in the direction of the center, particularly preferably in the direction of the actuating mechanism, moves at a shortening. To extend the vacuum cleaner suction tube, both the second tube segment and the third tube segment is moved away from the first tube segment.

According to one embodiment, which has been found to be particularly advantageous, it is provided that the second pipe segment and the third pipe segment by the mechanical coupling of the control device move in opposite directions, When manually moving one of the two outer pipe segments by the user, namely the second pipe segment or the third pipe segment, the control device causes a movement in each case opposite to the movement of the manually moved pipe segment, so that the second pipe segment and the third pipe segment are always moved simultaneously to the middle of the first pipe segment or always simultaneously away from the middle of the first pipe segment to be moved outside This embodiment has the advantage that the length of the vacuum cleaner suction tube can be shortened or lengthened quickly and easily, without having to actuate a plurality of actuators. In this embodiment, it is sufficient to actuate a single actuator, whereby the movement of both the second tube segment and the third tube segment is released and synchronized by the control device. Upon movement of only one pipe segment, consequently, the corresponding opposite pipe segment is automatically moved, so that the desired length status of the vacuum cleaner suction tube can be achieved very quickly, since only one of the movable pipe segments must be moved by half the desired change in length to achieve a desired change in length and the other moves automatically.

According to a further embodiment it is provided that the control device is designed as at least one control rod, which acts between the second pipe segment and the third pipe segment on the one hand so that a rectified movement of the second pipe segment and the third pipe segment takes place with manual operation, on the other hand also set up may be that - with suitable translation - an opposite movement of the pipe segments is realized to each other. Depending on the configuration and arrangement of the control rod, a bearing or attachment to the first tube segment and / or a cooperation with the actuating mechanism is provided. Also, two jointed via a joint control rods can cooperate in this sense as the only control rod.

According to a further embodiment, which has proven to be advantageous, it is provided that at least two control rods are present, that a first control rod with the end facing away from the first pipe segment end of the second pipe segment and a second control rod with the end remote from the first pipe segment end of the third pipe segment is connected, and that the first control rod and the second control rod via the Betäfigungselement, which is fixed to the first pipe segment, interact with each other. The control rods are consequently in the end regions of the second pipe segment and the third pipe segment which are remote from the first pipe segment attached. An attachment of the control rods to the pipe segments can also be done indirectly, for example via a nozzle.

The control rods extend within the tube segments. The power transmission during the movement of the second pipe segment or the third pipe segment relative to the first pipe segment via the control rods, via which the direction of movement of the individual pipe segments is controlled and possibly synchronized. The manual movement of a control rod always causes a movement of the other control rod, in particular to move along with the other pipe segment.

The actuator is advantageously arranged in the longitudinal direction in the middle of the first tube segment and guides the control rods such that movement of the control rods can be blocked and released by the actuating mechanism. The mechanical coupling of the control rods is either via the actuating mechanism or is realized independently of the actuating mechanism. The power transmission between the control rods takes place in the movement case such that the second and third pipe segments move in opposite directions or rectified.

According to a particularly preferred embodiment, it is provided that the control rods are formed as racks, and that the control rods are interacting with each other via a gear arranged on the actuating mechanism, so that the gear moves a movement of both racks upon manual movement of one of the two pipe segments. The racks are preferably made of a plastic and are provided over the entire length with a toothing which can engage in the toothing of the gear. Alternatively, a control rod can be provided only in sections with a toothing, namely in the areas in which contact with the gear in the context of freedom of movement of the pipe segments is possible.

The racks are each attached to the end remote from the first tube segment end of the second tube segment and the third tube segment and overlap in the region of the actuating mechanism, which is preferably attached to the first tube segment. With "overlap" is there meaning that they run parallel to one another in at least one section, the proportion of the overlap depending on the length configuration of the vacuum cleaner suction tube. A constant overlap of the racks takes place in the region of the gear wheel.

The toothed wheel is advantageously arranged on the actuating mechanism and is preferably rotatably mounted between the two toothed racks, so that the toothed racks run parallel to one another on different sides of the toothed wheel. The gear meshes with the teeth of the respective racks, so that it is ensured that when one of the two pipe segments and thus the respective rack is manually moved by a user, a power transmission via the gear, whereby the other pipe segment preferably moves in opposite directions becomes. The racks are guided on the gear so that skipping the teeth is prevented.

By this configuration, an advantageous and easy adjustment of the length of the vacuum cleaner suction pipe can be carried out. The use of racks and a gear has the advantage that the adjustment of the length of the vacuum cleaner suction tube can be made almost infinitely variable, since the lowest possible variable distance is the distance between two teeth of a rack or the gear.

In order to block the movement of the racks and thus the movement of the pipe segments to each other - which is required for the use of the vacuum cleaner suction tube - the gear is blocked by the actuating mechanism, so that the racks not relative to each other and thus the pipe segments are not moved relative to each other can be. By actuating the actuating mechanism, the movement of the gear, in particular the rotation, be released again, so that a manual adjustment of the length of the vacuum cleaner suction pipe is possible.

In order to realize a displacement of the pipe segments relative to each other at different speeds, is provided according to a further embodiment that a plurality of gears is present, so that between the racks of the second pipe segment and the third Pipe segments a different gear ratio is realized. This ratio can be implemented differently, for example, such that the third pipe segment always moves only half the distance to which the second pipe segment is moved by manual movement or vice versa, Also provided are further ratios that implemented differently depending on the application - Number of gears, arrangement, etc. - and can be configured. Via a plurality of gears, a simplified transmission of force between the racks can be realized in terms of a transmission. Furthermore, it is also envisaged that the transmission mechanism between the gear racks, z. B. by a slider, is switchable.

It has proved to be advantageous in the context of a further embodiment of the vacuum cleaner suction tube when four control rods are provided, and that two control rods cooperate with the second tube segment and two control rods with the third tube segment. For this purpose, the first control rod of a tube segment is fastened to the end of the respective tube segment facing away from the first tube segment and has a length which corresponds approximately to the length of the tube segment. At the end of each tube segment - here the second or third tube segment - engages the rack in the transition region between the second tube segment and the first tube segment or third tube segment and first tube segment in the second belonging to a tube segment rack, which rotated to 180 ° with respect to their teeth is.

The second control rod of an outer tube segment - second or third - then runs within the first tube segment, where it is guided in the actuating mechanism. This embodiment has the advantage that the length of engagement of the two racks of a pipe segment in the transition region between the second pipe segment and the first pipe segment or third pipe segment and the first pipe segment can be changed, so that although a rectified or opposite movement of the second pipe segment and the third pipe segment is realized with a uniform transmission ratio, but the overlap length between the second pipe segment and the first pipe segment or third pipe segment and the first pipe segment between the second pipe segment and the third pipe segment is different, with overlap length is meant the length with which the first pipe segment extends within the second pipe segment or within the third pipe segment. This setting of the overlap ratio is preferably carried out via two further, in each case on the second pipe segment or on the third pipe segment - are arranged on each end facing the first pipe segment - are arranged. The maximum overlap length between the second pipe segment and the first pipe segment is reached in the middle of the first pipe segment, that is to say half the length of the first pipe segment.

To optimize the suction power is provided according to a further embodiment of the vacuum cleaner suction tube that the tube segments have a teardrop-shaped cross-section, that within the cross section of each tube segment, a suction channel is arranged, and that outside the suction channel, the control device is arranged in the tube segments. This embodiment has the advantage that the actual suction channel, in which the suction air is guided, runs independently of the control device, so that no turbulence of the suction air occurs and thus a power loss is caused by the control device. The suction channels of the individual pipe segments preferably engage in each other just like the pipe segments themselves on the length of the vacuum cleaner suction tube and are sealed against each other and slidable. The suction channel preferably has a circular cross section, so that it can be advantageously arranged in the lower part of the drop-shaped cross section of the pipe segments. In the upper portion of the drop-shaped cross section of the pipe segments then the control device, in particular the rack, is arranged.

While the pipe segments are preferably made of stainless steel or another metal, the suction channel or the suction channels are made of a plastic. The suction channels serve only to guide the air and are freely displaced against each other. The locking of the respective position and thus the length of the vacuum cleaner suction pipe is carried out as usual via the locking of the pipe segments relative to each other via the control device.

According to a last embodiment of the vacuum cleaner suction tube is provided that in each case at the end remote from the first tube segment of the second tube segment and the third tube segment, a nozzle is provided which is fixedly connected to the control device and the suction channel positioned within the tube segment. The respective nozzle is positively inserted at the end of the second pipe segment or at the end of the third pipe segment in this form-fitting and thereby completes this. Non-binding is only the running within the pipe segments suction channel, which is connected via a corresponding adapter piece on the nozzle with the squeegee or with the suction hose of a vacuum cleaner. Depending on the configuration, the respective nozzle is designed in one piece with the suction channel extending inside the pipe segment or separated therefrom, so that the nozzle and the suction channel engage in one another in a form-fitting manner. The nozzle serves to position and fix the suction channel within the respective tube segment. At the nozzle, the control device, in particular the racks, fixed, so that the racks are fixed to each remote from the first pipe segment end of the second pipe segment and the third pipe segment and a power transmission from the racks on the nozzle to the pipe segments and vice versa.

In addition, intermediate stubs are preferably also provided at the ends of the second pipe segment and the third pipe segment facing the first pipe segment, which on the one hand improves the sliding properties between the pipe segments, and on the other hand serves to seal the pipe segments to one another. The intermediate piece also positions the suction channel.

Fig. 1

ein Ausführungsbeispiel eines teleskopierbaren Staubsauger-Saugrohrs,

Fig. 2

den Endabschnitt eines Ausführungsbeispiels eines Staubsauger-Saugrohrs,

Fig. 3

den Übergangsabschnitt zwischen zwei Rohrsegmenten eines Ausführungsbeispiels eines Staubsauger-Saugrohrs"

Fig. 4

den Abschnitt des Rohrsegments mit dem Zahnrad eines Ausführungsbeispiels eines Staubsauger-Saugrohrs,

Fig. 5

den zweiten Endabschnitt eines Ausführungsbeispiels eines Staubsauger-Saugrohrs,

Fig. 6

die Steuervorrichtung und die Stutzen des Ausführungsbeispiels gemäß Fig. 1, und

Fig. 7

einen Querschnitt eines Ausführungsbeispiels eines Staubsauger-Saugrohrs.

In particular, there are a variety of ways to design the vacuum cleaner suction tube according to the invention and further educate. Reference is made to the claims subordinate to claim 1 and the following to a preferred embodiment in conjunction with the drawings. In the drawing show:

Fig. 1

an embodiment of a telescopic vacuum cleaner suction tube,

Fig. 2

the end portion of an embodiment of a vacuum cleaner suction pipe,

Fig. 3

the transition section between two pipe segments of an embodiment of a vacuum cleaner suction pipe "

Fig. 4

the portion of the pipe segment with the gear of an embodiment of a vacuum cleaner suction pipe,

Fig. 5

the second end portion of an embodiment of a vacuum cleaner suction pipe,

Fig. 6

the control device and the nozzle of the embodiment according to Fig. 1 , and

Fig. 7

a cross section of an embodiment of a vacuum cleaner suction pipe.

Fig. 1 shows an embodiment of a vacuum cleaner suction pipe 1 with a first pipe segment 2, a second pipe segment 3 and a third pipe segment 4. The three pipe segments 2, 3, 4 are telescopically connected to each other, wherein the first pipe segment 2 between the second pipe segment 3 and the third Pipe segment 4 is arranged. In the vacuum cleaner suction pipe 1 is an in Fig. 6 arranged control device 5, wherein the control device 5, the three pipe segments 2, 3, 4 mechanically interconnected, so that in a manual displacement of the second pipe segment 3 or the third pipe segment 4 by a user in the axial direction relative to the first pipe segment 2, the respective other pipe segment 3, 4 is moved by the control device 5. The movement of the second tube segment 3 and the third tube segment 4 is consequently coupled via the control device 5. The second pipe segment 3 and the third pipe segment 4 thereby move in opposite directions to one another by the control device 5, ie both pipe segments 3, 4 are simultaneously moved toward or away from the center of the first pipe segment 2.

To actuate the control device 5 is according to Fig. 1 an actuating mechanism 6 is provided, which acts on the control device 5, so that when the actuating mechanism 6 is not actuated, a relative movement of the three Pipe segments 2, 3, 4 is blocked to each other, and that when manually operated actuating mechanism 6, a relative movement of the second pipe segment 3 and the third pipe segment 4 is released relative to the first pipe segment 2. The locking of the manually set length of the vacuum cleaner suction pipe is thus effected by the control device 5, which acts on the three pipe segments 2, 3, 4.

The second tube segment 3 and the third tube segment 4 are attached to the first tube segment 2 at opposite ends of the first tube segment 2. For this, the cross sections of the second tube segment 3 and the third tube segment 4 are slightly larger than the cross section of the first tube segment 2. If the vacuum cleaner suction tube 1 telescoped, the first tube segment 2 shifts within the second tube segment 3 and the third tube segment 4. The first Tube segment 2 thus forms an inner tube, while the second tube segment 3 and the third tube segment 4 represent outer tubes.

In the Fig. 6 shown control device 5 is for the embodiment according to Fig. 1 configured such that the second pipe segment 3 and the third pipe segment 4 move in opposite directions by the mechanical coupling of the control device 5, when one of the two pipe segments 3, 4 is moved manually by a user. A manual movement by a user can also take place such that the second tube segment 3 or the third tube segment 4 is held and fixed by the user and then the first tube segment 2 is moved relative thereto.

According to Fig. 6 The control device 5 comprises a total of four control rods, which are designed as racks 7. The second pipe segment 3 and the third pipe segment 4 each comprise a first rack 7a and a second rack 7b, the first rack 7a and the second rack 7b are arranged rotated in the assembled state by 180 ° to each other, so that in a transition region a plurality of Teeth of the first rack 7a and the second rack 7b intermesh. This transition region is preferably in the region in which the first pipe segment 2 in the second pipe segment 3 and in the third pipe segment 4 passes.

The two second control rods 7b, namely those of the second pipe segment 3 and those of the third pipe segment 4, overlap in the region of the actuating mechanism 6. "Intersecting" means that the second racks 7b extend parallel to one another in a section, the length of this section depends on the set length of the vacuum cleaner suction tube. The shorter the overall length of the vacuum cleaner suction pipe 1 is set, the longer is the portion in which the second racks 7b overlap. When the vacuum cleaner suction pipe 1 is set at its maximum length, the overlapping of the racks 7b is the lowest.

A detailed view of the vacuum cleaner suction tube 1 in the region of the actuating mechanism 6 is shown in FIG Fig. 4 shown. According to Fig. 4 The second racks 7b in the first tube segment 2 overlap in the region of the actuating mechanism 6 (not shown here in detail). As part of the actuating mechanism 6, a gear 8 is rotatably mounted, the teeth of the gear 8 engaging in the teeth of both second control rods 7b , The racks 7b are parallel to each other on opposite sides of the gear 8. The racks 7b are coupled via the gear 8 such that each movement of one of the two second racks 7b is transmitted via the gear on the other rack 7b. The gear 8 is rotatably mounted and connected to the other components of the actuating mechanism 6 such that the rotation of the gear 8 is released by actuation of the actuating mechanism 6. When the actuating mechanism 6 is not actuated, a rotation of the toothed wheel 8 is blocked by the actuating mechanism 6, so that overall a relative movement of the control device 5 and thus the tube segments 2, 3, 4 is blocked relative to one another. The second racks 7b have blocking elements 9 at their intersecting ends. The blocking elements 9 prevent the second racks 7b from the gear 8 and thus also the second tube segment 3 from the first tube segment 2 and the third tube segment 4 from the first tube segment 2 is deducted.

As in Fig. 1 and Fig. 6 illustrated, the actuating mechanism 6 is designed as a pressure mechanism, so that the movement of the tube segments 2, 3, 4 relative to each other by a pressure on the push button 14 is released. The push button 14 is spring-loaded, so that the movement of the tube segments 2, 3, 4 is blocked relative to each other when no pressure is exerted on the push button 14.

Fig. 7 shows a cross section of the vacuum cleaner suction pipe 1 in the region of the second pipe segment 3. All pipe segments 2, 3, 4, as here also the second pipe segment 3 have a substantially teardrop-shaped cross-section. In the lower region of the drop-shaped cross section, a suction channel 10 is arranged within the second tube segment 3, which serves to guide the suction air within the vacuum cleaner suction tube 1. The suction channel 10 has a circular cross-section and has the advantage that the suction air without being influenced by components and thus consequently without turbulence within the suction channel through the vacuum cleaner suction pipe 1 is performed.

Within all three pipe segments 2, 3, 4, a suction channel 10 is guided to guide the suction air, wherein the individual sections of the suction channel 10 in the pipe segments 2, 3, 4 also against each other displaceable, ie are telescopic. The sections of the suction channel 10 form a continuous and sealed channel between the two ends of the vacuum cleaner suction pipe 1. Also inside the second pipe segment 3, but outside the suction channel 10 extends the rack 7. Due to the fact that the racks 7 of the control device 5 outside the suction channel 10 are performed, performance-reducing turbulence within the suction channel 10 are prevented. Not shown in Fig. 7 the existing in the rear planes components of the vacuum cleaner suction pipe. 1

In addition to the control device 5 are in Fig. 6 Stub 11 shown, which are inserted in the assembled state of the vacuum cleaner suction pipe 1 in the opposite of the first pipe segment 2 ends of the second pipe segment 3 and the third pipe segment 4. The nozzle 11 surround the suction channel 10 positively and hold it at its position within the respective pipe segment 3, 4. The nozzle 11 provides for the vacuum cleaner suction pipe 1, the interface of the suction channel 10 to the - not shown - suction of the vacuum cleaner and on the other side to the suction hose (not shown). The first toothed racks 7a of the control device 5 are respectively fastened to the nozzles 11. About this connection, the power transmission takes place from the second pipe segment 3 and the third pipe segment 4 on the racks 7 and vice versa, ie from the racks 7 to the second pipe segment 3 and the third pipe segment. 4

Furthermore, in the assembled state, intermediate stubs 12 are inserted into the second pipe segment 3 and the third pipe segment 4 respectively at the end of the second pipe segment 3 facing the first pipe segment 2 and the third pipe segment 4. On the one hand, the intermediate sockets 12 serve to hold the suction channel 10 within the tube segments 3, 4, on the other hand they serve to simplify the sliding operation between the first tube segment 2 and the second tube segment 3 or the third tube segment 4. The intermediate sockets 12 serve as sliding elements between the tube segments 2 , 3, 4 and at the same time seal off the crossing points.

Fig. 2 shows an embodiment of a remote from the first pipe segment 2 end portion of the second pipe segment 3 in a partial sectional view. Within the tube segment 3, the suction channel 10, which is positively connected to the nozzle 11 extends. The first rack 7a is also attached to the stub 11, so that a power transmission from the rack 7a via the nozzle 11 to the second pipe segment 3 takes place. The nozzle 11 also serves as an interface for the suction channel 10 for guiding the suction air, in particular for connecting the vacuum cleaner suction pipe 1 to a - not shown - suction.

Fig. 3 shows the transition region between the second pipe segment 3 and the first pipe segment 2 of an embodiment of the vacuum cleaner suction pipe 1. Between the first pipe segment 2 and the second pipe segment 3, a stub 12 is arranged. The extending below the racks 7 suction channel 10 is not shown here. Within the first tube segment 2 and the second tube segment 3 extend the first rack 7a and the second rack 7b, which are arranged offset by 180 ° to each other and in the transition region between the first tube segment 2 and second pipe segment 3 mesh with a plurality of teeth and are thereby interconnected.

Fig. 5 shows an embodiment of a remote from the first pipe segment 2 end portion of the third pipe segment 4 in a partial sectional view. In the pipe segment 4, a nozzle 11 is inserted, which serves as an interface for the suction channel 10 of the vacuum cleaner suction pipe 1. The suction channel 10 is positively inserted into the socket 11, so that the nozzle 11 holds the suction channel 10 within the third tube segment 4. Furthermore, the first rack 7a is fixed to the nozzle 11 so that power is transmitted from the rack 7a to the nozzle 11 and thus to the third pipe segment 4. This nozzle 11 has an actuating element 13, which serves the releasable locking of the nozzle 11 with an inserted into this - not shown - suction hose.

Claims (10)

1. A vacuum cleaner suction tube (1), comprising a first tube segment (2), a second tube segment (3), and a third tube segment (4), wherein the tube segments (2, 3, 4) are telescopically connected to one another with the first tube segment (2) being located between the second tube segment (3) and the third tube segment (4), wherein a control device (5) is provided, wherein the tube segments (2, 3, 4) mechanically interact with one another in a manner causing manual movement of the second tube segment (3) or the third tube segment (4) in an axial direction relative to the first tube segment (2) that moves the other tube segments (3, 4) with it using the control device (5) and wherein at least two control rods are provided
   characterized in
   that a first control rod is connected to the end of the second tube segment (3) facing away from the first tube segment (2) and a second control rod is connected to the end of the third tube segment (4) facing away from the first tube segment (2), that the first control rod and the second control rod interact with one another via an actuating mechanism (6) that is attached to the first tube segment (2), and that the control rods run inside the tube segments (2, 3, 4).
2. Vacuum cleaner suction tube (1) according to claim 1, characterized in that the actuating mechanism (6) is provided for the control device, so that a relative movement of the tube segments (2, 3, 4) to one another is blocked when the actuating mechanism (6) has not been actuated, and that when the actuating mechanism (6) is manually actuated, a relative movement of the second tube segment (3) and the third tube segment (4) relative to the first tube segment (2) is enabled.
3. Vacuum cleaner suction tube (1) according to claim 1 or 2, characterized in that the actuating mechanism (6) is a push mechanism.
4. Vacuum cleaner suction tube (1) according to any one of claims 1 to 3, characterized in that the second tube segment (3) and the third tube segment (4) are mouted on the first tube segment (2) on opposite ends of the first tube segment (2).
5. Vacuum cleaner suction tube (1) according to any one of claims 1 to 4, characterized in that due to a mechanical coupling of the control device (5), the second tube segment (3) and the third tube segment (4) move in opposite directions.
6. Vacuum cleaner suction tube (1) according to any one of claims 1 to 5, characterized in that the control rods are toothed racks (7), and that the toothed racks (7) are in interaction with one another via at least one gear (8) located on the actuating mechanism (6) so that, when one of the two tube segments (3, 4) is moved manually, the gear (8) implements movement in both toothed racks (7).
7. Vacuum cleaner suction tube (1) according to claim 6, characterized in that a plurality of gears are provided so that a different transmission ratio is implemented between the toothed racks (7) of the second tube segment (3) and of the third tube segment (4).
8. Vacuum cleaner suction tube (1) according to any one of claims 1 to 7, characterized in that four control rods are provided and that two control rods interact with the second tube segment (3) and two control rods interact with the third tube segment (4).
9. Vacuum cleaner suction tube (1) according to any one of claims 1 to 8, characterized in that the tube segments (2, 3, 4) have a droplet-shaped cross section, that a suction channel (10) is arranged within the cross section of each tube segment (2, 3, 4), and that the control device (5) is arranged in the tube segments (2, 3, 4) outside of the suction channel (10).
10. Vacuum cleaner suction tube (1) according to claim 9, characterized in that on an end of each of the second tube segment (3) and the third tube segment (4) that faces away from the first tube segment (2), a connector (11) is provided which is permanently connected to the control device (5) and which positions the suction channel (10) within the tube segments (2, 3, 4).

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