KR101781326B1 - Assembly of a vacuum cleaner suction tube, a guide insert, an operating lever and a tube section - Google Patents

Abstract

The present invention relates to an assembly of a vacuum cleaner suction tube (10) comprising an outer tube (11) and an inner tube (12), a guide insert (14) at least partly sleeved, and an operating lever
The vacuum cleaner suction tube (10) supports a guide insert (14) which is at least partially sleeve-shaped at one tube end,
The guide insert 14 has a fixed extension 18 oriented radially outwards to support the blocking body 29,
The fixed extension portion 18 of the guide insert 14 includes guiding means for controlling the movement of the operating lever 20 and a locking surface 51 for fixing the operating lever 20,
The actuating lever 20 forms one or more relative locking surfaces 48 interacting with the locking surface 51 and has a locking bar and forms a moving chamber 30, A relative guide means for interacting with the guide means of the guide member 18 is disposed,
The operating lever 20 can be moved along the guiding means of the fixed extension 18 by means of the mating guide means to lock or unlock the mating body 29 using the locking bar
The inner tube 12 is arranged at least indirectly in the guide insert 14 and comprises at least one locking groove 13 into which a blocking body 29 of the guide insert 14 is inserted into the guide insert 14 (14), the operating lever (20) comprising an assembly chamber (31) arranged in a common moving track of the guide means and the relative guide means, the assembly chamber The fixed insert 18 is received on the guide insert 14 in order to assemble the actuating lever 20 and the displacement of the fixed extension 18 along the movement track in the mutual engagement of the guide means and the relative guide means .

Description

ASSEMBLY OF A VACUUM CLEANER SUCTION TUBE, A GUIDE INSERT, AN OPERATING LEVER AND A TUBE SECTION BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner suction tube,

The present invention relates to a vacuum cleaner suction tube, an at least partially sleeve-shaped guide insert, an operating lever and an assembly of tube sections, wherein the vacuum cleaner suction tube supports a guide insert at least partially sleeve-shaped at one end of the tube, And the locking extension portion of the guide insert includes a guiding means for controlling the movement of the actuating lever and a locking surface for fixing the actuating lever, Which forms a mating locking surface which interacts with the locking surface and which has a locking bar and which forms a moving chamber and in which a mating guide And the actuating lever is provided with a locking bar The tube section can be moved at least indirectly along the guide means of the stationary extension using relative guide means so that it can be locked or unlocked, and the tube section is disposed at least indirectly within the guide insert and includes one or more locking recesses And a cut-off body of the guide extension is engaged and fixed in the lock groove so as to fix the tube section in the guide insert.

Such an assembly is known from DE 1 208 787 B. The assembly consists of a telescopic vacuum cleaner suction tube and the outer tube partly accommodates a guide insert which is at least partially sleeve-shaped inside itself. The inner tube of the vacuum cleaner suction tube is guided in the outer tube by a guide insert and correspondingly includes a locking groove into which a blocking body of the guide insert is engaged and fixed. The operating lever in the form of a slide button is snap-fitted onto the fixed extension of the guide insert and held in the neutral blocking position by the spring member. In this blocking position, the locking bar of the slide button pushes the blocking body down into the locking groove of the inner tube and fixes it. The slide button can be moved away from its locking or blocking position against the resilient force, thereby unlocking the blocking body. By the relative displacement of the inner tube relative to the outer tube, the blocking body is lifted from the locking groove. Vacuum cleaner suction pipe is expandable.

EP 1 033 103 B1 discloses a retractable vacuum cleaner suction tube having substantially the same function. However, in the case of this European publication, the operating lever is not snapped onto the fixed extension of the guide insert, but is formed as an operating sleeve surrounding the guide insert. Nevertheless, the operating sleeve is guided by the guide means of the guide insert.

From DE 10 2007 039 810 A1 a substantially identical function system is known in which the vacuum cleaner suction line is connected to additional vacuum cleaner components, in particular bottom nozzles or handle members.

Compared to the last two publications, DE 1 208 787 B has a substantial advantage in that it does not require a working sleeve which broadly surrounds the tube assembly. In addition, the German publication is characterized in that it comprises an operating mechanism which can be produced economically with only a small number of members, and which is simply assembled. The absence of DE 1 208 787 B1, in particular,

a) the operating lever can be moved along the guide surface of the fixed extension fixed to the guide insert, parallel to the outer surface of the outer tube, using its mating guide surface,

b) the guide surface of the fixed extension is the same as the locking surface of the fixed extension,

c) The relative guide surface of the operating lever is the same as the relative locking surface of the operating lever,

d) the lock bar forms a slide lock bar,

e) the locking bar is fixed to the operating lever, and

f) to allow the locking bar to interact directly with the blocking body

Is accomplished through.

As a result, the operating lever is disposed through a snap fit directly on the fixed extension. However, it has been shown that the locking process can place an excessive load on the locking means used also as a guiding means, and in some cases causes invisible pre-injury of the guiding means in some cases. This reduces the lifetime of the adjustment mechanism of the vacuum cleaner suction pipe.

It is an object of the present invention to provide a new operating lever for a general assembly starting from DE 1 208 787, which permits assembly on a stationary extension, while maintaining a simple configuration and without imposing an excessive load on the guide means.

It is also an object of the present invention to make use of a general adjustment device for a vacuum suction device of DE 1 208 787 B for the vacuum nozzle of the vacuum cleaner to combine the floor nozzle and / or the handle member with the suction type vacuum cleaner suction pipe.

This object is achieved by an assembly according to claim 1, in particular comprising an assembling chamber in which an operating lever is arranged in a common moving track of a guiding means and a relative guiding means, Accommodating the fixed extension portion and allowing the fixed extension portion to be displaceable along the movement track under the condition that the guide means and the relative guide means are engaged with each other.

 The practical advantages of the actuating lever formed by including the assembly chamber according to the present invention are as follows. In order to assemble the actuating lever on the fixed extension of the guide insert, the guiding means are no longer locked together. Forcible deformation of the guiding means enabling mutual interlocking of the locking surfaces in the locking process is excluded. The load of the guide means resulting from such deformation is also excluded in the case of an operating lever which has been modified in accordance with the invention. Instead, a stationary extension for assembly is inserted into the assembly chamber and subsequently displaced along the common movement track of the guide means and the mating guide means to extend into the stationary lock bar movement. By doing so, the fixed extension reaches into the moving chamber of the operating lever, and the guide means and the relative guide means engage with each other.

A particularly preferred embodiment of the invention comprises a relative locking means in which the assembly chamber forms a relative locking surface of the actuating lever and in particular the relative locking means allows the fixed extension along the moving track to be assembled into the moving chamber, And a moving end stopping portion for holding the guide means and the relative guide means in a state of being engaged with each other for the movement of the lock bar opposite to the moving stopper portion.

The locking means first ensures that the actuating lever is reliably placed on the fixed extension in the form of a lock. The locking means should also be arranged in such a way as to allow sliding of the fixed extension in the transfer chamber, but to prevent reverse movement. To this end, the locking means forms a movable end stop which prevents complete rearward displacement of the fixed extension within the assembly chamber and thus release of the actuating lever from the guide insert. The partial rearward displacement can be tolerated by the locking means. However, in a specific and preferred embodiment, the relative locking means also prevents partial rearward displacement of the fixed extension within the assembly chamber.

Further, the guiding means of the fixed extension portion and the relative guiding means of the actuating lever act mutually only in the region of the moving chamber.

In so doing, the invention ensures a particularly desirable but simple assembly, since the locking means automatically displaces back into the transfer track after insertion of the fixed extension into the transfer chamber, thereby preventing back displacement of the fixed extension.

In this regard, the invention of a further embodiment is characterized in that the relative locking surface of the relative locking means forms a plane separating the assembly chamber from the moving chamber.

More specifically, two guide means formed as protrusions are provided on the side of the fixed extension portion, and two grooves complementarily formed on the side of the operation lever are provided as relative guide means, Are engaged with each other for movement control.

In this case, the end wall portion of the protrusion adjacent to the movable chamber forms the locking surface of the fixed extension. So that the end wall portion of the fixed extension is supported on the relative locking face of the actuating lever and prevents corresponding rearward displacement of the fixed extension within the assembly chamber.

Also, in order to prevent partial rearward displacement of the fixed extension within the assembly chamber, the relative locking means is disposed in a common moving track while closing the groove chamber in its assembly position from its rest position.

To ensure a slight displacement of the locking means from the common moving track of the guiding means and the relative guiding means by insertion of the stationary extension into the assembly chamber, the relative locking means allocated to the groove chamber is provided with an expansion ramp .

According to the present invention, an operation lever is provided that allows assembly on a fixed extension portion without giving an excessive load to the guide means while maintaining a simple configuration.

In the drawings, preferred embodiments of the present invention are shown.
FIG. 1 is a perspective view schematically showing a vacuum cleaner suction pipe in a state in which the adjusting device is partly opened. FIG.
Fig. 2 is a perspective view schematically showing the same embodiment, with the internal members of the adjustment device further opened to reveal other members of the adjustment device, on the basis of Fig. 1;
3 is a cross-sectional view showing the first embodiment at the lock fixing position.
4 is a cross-sectional view of the embodiment according to Fig. 3 in the unlocked position.
5 is a cross-sectional view showing the embodiment according to Figs. 3 and 4 during the retractable adjustment movement. Fig.
Fig. 6 is a cross-sectional view showing the second embodiment from the lock-fixing position.
Figure 7 is a cross-sectional view of the embodiment according to Figure 6 in the first unlocked position.
8 is a cross-sectional view of the embodiment according to Fig. 6 in a second unlocked position.
9 is an exploded view showing an assembly of an operating lever and a guide insert.
10 is a perspective view of the operating lever according to FIG. 9 as viewed from below.
11 is a sectional view showing the operating lever according to Fig.
12 is a sectional view showing an assembly of the fixed extension and the operation lever in the assembled position.
Fig. 13 is a cross-sectional view according to Fig. 12, but showing a condition in which the operating lever is located at a stop position or a lock fixing position.
Fig. 14 is a cross-sectional view according to Fig. 12 but showing the condition in which the operating lever is located at the unlocked position. Fig.

Hereinafter, similar features will be denoted by the same reference numerals even if they are specifically different from each other, in which different embodiments are shown.

The figure shows the axial partial area of the retractable vacuum cleaner suction pipe 10, and the longitudinal center axis of the suction pipe is denoted by M. The retractable vacuum cleaner suction pipe 10 includes an outer tube 11 and an inner tube 12 which is received axially partially by the outer tube 11 and has a lock groove 13. The plastic guide insert 14 is inserted into the outer tube 11 at the end side and is then supported on the adjacent end surface 16 of the outer tube 11 by means of the flange 15.

The locking groove 13, which is arranged along the inner tube 12 in the axial direction, forms a detent strip (R).

The outer tube 11 includes an axially extending end side through opening 17 through which a stationary extension 18 integrally formed with the guide insert 14 extends radially outward Lt; / RTI >

The fixed extension 18 is a substantially chute-like structure that opens outwardly in the radial direction, and the left-hand corner area of the structure facing the observer according to FIG. 1 is incised for a clear view. The fixed extension portion 18 includes two strip-shaped wall portions 19 arranged in parallel to each other and spaced apart from each other. Parallel wall sections 21 of the operating lever 20 interact with the wall portions 19. The two wall sections 21 of the operating lever 20 are part of the operating lever wall.

The end side surfaces of the two strip-shaped wall portions 19 of the fixed extension portion 18 are connected to each other by the transverse wall portions 22, respectively.

The two strip-shaped wall portions 19 of the fixed extension portion 18 and the two wall sections 21 of the operating lever 20 are arranged in the direction of the surface line of the outer tube 11, Lt; / RTI >

The hollow side (24) of the operating lever (20) forms a slide button which is generally dome shaped towards the outer tube (11).

In addition, the lock bar formed as the lock bar projection 26 protrudes from the inner surface 25 of the operation lever 20. The end face of the lock bar protrusion 26, which faces the outer tube 11, forms a lock bar surface 27 that interacts with the mating lock bar surface 28 of the mating body.

The lock bar protrusion 26 is disposed between the two wall sections 21 of the operation lever 20.

The actuating lever 20 is connected to the deflection chamber 29 for the blocking body 29 which is disengaged from the locking groove 13 in front of the locking bar protrusion 26 (see Figs. 1 to 5) And this deflection chamber is part of the moving chamber 30 at the same time and the fixed extension 18 in the moving chamber can be displaced toward the direction x when the locking bar of the operating lever is moved. In addition, the actuating lever 20 forms an assembly chamber 31 at the rear of the locking bar protrusion 26 in the axial direction. This assembly chamber is also used as an additional deflection chamber 31 for the blocking body 29 which is disengaged from the locking groove 13 according to Figs.

The manner in which the blocking body is disengaged from the lock groove 13 during the adjustment movement in the deflection chamber 38 is known from FIG.

The strip-shaped wall portion 19 of the fixed extension portion 18 includes a rib projection. The rib projection 32 retains the guide surface 34. The wall section 21 of the operating lever 20 includes a groove 33 which is complementarily formed corresponding to the rib projection 32. The groove 33 has a mating guide surface 35 that interacts with the guide surface 34 of the rib projection 32. The rib projection 32 forms the guide means of the fixed extension 18. The groove (33) forms the relative guide means of the operating lever (20).

In other words, the guide surface 34 is a constituent part of the fixed extension part 18, while the mating guide surface 35 belongs to the wall section 21 of the actuating lever 20.

As in the case of the substantially strip-shaped guide surface 34, a substantially strip-shaped mating guide surface 35 extends parallel to the outer surface A of the outer tube 11. In the illustrated embodiment, the guide surface 34 and the mating guide surface 35 extend in the direction of the surface lines of the outer tube 11. In Figures 1 and 2, two surface lines 36, 37 of the surface lines are shown by way of example.

The rib projection 32 is engaged in the groove 33 for guiding the axial movement of the actuating lever.

1 to 5, the transverse wall portion 22 of the fixed extension portion 18 simultaneously forms a strut wall for the helical compression spring 41 and a centering pin 40, (X) by an operating pressure (P) applied to the operating surface (42).

When the movement of the operating lever 20 is made in the direction x starting from the position of the locking bar projection 26 in Fig. 3, the locking bar projection 26 of the operating lever 20 is moved to the unlocking position . The movement of the outer tube 11 in the direction x relative to the inner tube 12 may then be effected when the working pressure P is maintained and the inner tube 12 is held stationary, The inner tube 29 slides over the outer surface B of the inner tube 12 so as to come out of the previously inserted lock groove 13 and eventually engage with one of the subsequent locking grooves 13. [ Subsequently, when the operating pressure P disappears and the restoring force of the helical compression spring 41 moves the operating lever 20 in the direction y, the locking according to Fig. 3 is effected in a similar manner again immediately.

3 to 5 show that the strut wall for the helical compression spring 41 is formed by the projecting portion 43 projecting from the inner surface 25 of the operating lever 20 on the side of the operating lever 20 Able to know.

The embodiment according to Figs. 6 to 11 is advantageous in that the actuating lever 20 can be moved in the direction y as well as in the direction x against the respective restoring forces, Which is different from the embodiment shown in Figs.

Protrusions 44 are cut away from the outer tube 11 and bent outwardly in the radial direction so as to cause unlocking of the operating lever 20 as described above in both directions x and y To 8). Thereby, not only the helical compression spring 45 but also the opposite helical compression spring 46 can be provided.

The helical compression spring 45 is supported at one end by the strut wall 43 of the operating lever 20 and at the other end by the strut 44 formed by the outer tube 11. [

The other helical compression spring 46 is supported at one end by a strut 44 formed by the outer tube 11 and at the other end by a strut wall formed by the other projecting portion 47, Protrudes radially inward from the inner surface 25 of the operating lever 20. [

In the case of the embodiment of Figs. 6 to 8, the wall portion 22 is not provided so as not to interfere with the axial movement of the projecting portion 47.

6, the helical compression spring 45 is compressed and, in the case of unlocking in the direction x, starting from the locked condition in which the two helical compression springs 45, 46 are located in the neutral spring position, Thereby providing a restoring force to return the locking bar protrusion 26 to the locking position according to FIG. 6 after relative adjustment between the outer tube 11 and the inner tube 12.

Conversely, when the operating pressure P moves the operating lever 20 in the direction y together with its locking bar projection 26 (Fig. 8), this is done against the restoring force of the helical compression spring 46, When the operating pressure P disappears, the restoring force moves the operating lever 20 back to the locking position according to Fig.

The blocking body 29 is pivotally connected to the guide insert 14 by a holding tongue that is cut from the wall of the guide insert 14. [

The guide insert 14 and the actuating lever 20 each form a plastic injection-molded part. To prevent rotation of the retractable assembly, the guide insert 14 is provided with an axial guide rib 57 projecting radially inwardly and engaging an axial guide groove 58 at the outside of the inner tube 12 ribs.

The guide insert 14 is fixed so as not to be displaced in the axial direction in the outer tube 11 in a manner not shown. The prevention of rotation between the guide insert 14 and the outer tube 11 is achieved by forming a shape-positive coupling between the penetrating opening 17 of the outer tube 11 and the fixed extension 18.

In the following, the interaction between the operating lever 20 and the fixed extension 18 will be described with reference to Figs. 9 to 14.

Figure 9 shows an exploded view of the assembly of the guide insert 14 and the actuating lever 20.

The helical compression spring 41 which is disposed on the centering pin 40 of the transverse wall 20 of the fixed extension portion 18 and is supported by the strut 43 of the operating lever 20 Respectively. The blocking body 29 with the relative locking bar surface 28 as well as the wall portion 19 of the fixed extension 18 with the rib projection 32 is well illustrated in FIG.

10 is a perspective view of the operation lever 20 seen from the bottom toward the inside of the hollow side 24 thereof. 10 further shows a retaining wall 43 for supporting the helical spring 41, a locking bar protrusion 26 having a locking bar surface 27, a wall section 21 forming a guide groove 33, Finally, a relative lock means 23 for fixing the operation lever 20 on the fixed extension portion 18 is shown.

The relative lock means 23 is disposed in the region of the assembly chamber 31. The transfer chamber 30 includes an area of the hollow side 24 with a guide groove 33 and extends to the retention wall 43. As a result, the relative lock surface 48 of the relative lock means 23 forms a plane separating the assembly chamber 31 from the movement / deflection chamber 30, not shown in FIG.

11 shows the operating lever 20 in a sectional view. The cutting plane lies in the region of the guide groove 33 and is arranged axially parallel to the longitudinal center axis M of the vacuum cleaner suction pipe. The aforementioned separation plane between the assembly chamber 31 and the transfer chamber 30 is shown by the dashed line marked T. [ The separation plane T is radially directed towards the vacuum cleaner suction pipe 10. The separation plane is defined by the relative locking surfaces 48 of the counter-locking means 23 disposed on both sides of the assembly chamber 31.

11, the wall section 21 of the actuating lever 20, which is oriented substantially axially parallel to the longitudinal center axis M, is inclined in the direction of the deflection depression 49 in the region of the assembly chamber 31, .

The mating guide surface 35 formed by the guide groove 33 forms a common movement track with the corresponding guide surface 34 of the fixed extension 18 and the movement of the operation lever 20 along the movement track, Can be displaced relative to the fixed extension (18) of the guide insert (14). As can be seen from FIG. 11 in particular, the relative lock means 23 is disposed in the above-described moving track at its stop position. The relative locking means closes the guide groove 33 in the direction of the assembly chamber 31 at the rest position shown in FIG. The assembly chamber 31 itself is disposed adjacent to the transfer chamber 30, while being positioned in the transfer track.

A sectional view of the actuating lever 20, corresponding to Fig. 11, is shown in Fig. 12 with the guide insert 14 shown.

The stationary extension 18 of the guide insert 14 is located in the assembled position, for which the stationary extension is fitted in the assembly chamber 31. At this time, the wall section 19 pushes the relative locking means 23 of the operating lever 20 out of its rest position and displaces it into the deflection depression 49. To facilitate this process, at least the relative locking means 23 has an enlarged inclined surface which is directed towards the fixed extension 18. The extended inclined plane is not shown in detail in Fig. The corresponding enlarged slope formed by the wall 19 of the fixed extension, particularly on the side of the fixed extension 18, is a desirable complement. In the assembled position shown in FIG. 12, the rib projection 32 is oriented corresponding to the groove 33.

Figure 13 shows a working sleeve 20 that is placed on the fixed extension 18 in a non-losing manner. This position corresponds to the neutral position of the operating lever 20 at which the locking bar protruding bar 26, not shown in FIG. 13, is located above the blocking body 29 and a telescoping function In order to block the deflection of the shielding body. This position is a position that the operation lever 20 takes after starting from the position in Fig. 12 and moving in the direction x. In this case, the rib projection 32 is engaged with the guide groove 33. The fixed extension portion 18 reaches into the movement chamber 30 not shown in detail in Fig. After the fixed extension portion 18 is completely fitted into the movable chamber 30 or completely released from the assembly chamber 31, the relative displacement of the movable portion 30, which is elastically displaced into the deflection depression 49 by the spring- The locking means 23 returns to its rest position in a snap manner and is again located in a common moving track. The relative locking surface 48 then closes the groove 33 and interacts with the locking surface 51 formed by the transverse wall portion 50 of the wall portion 19 which is directed towards the assembly chamber 31. Therefore, the reverse movement in the direction y in which the rearward displacement of the fixed extension portion 18 is performed is reliably prevented.

The helical compression spring 41 is supported not only on the strut 43 of the operating lever 20 at the position shown in Figure 13 but also at the transverse wall 22 of the fixed extension 18, . In this neutral position, a locking bar projection 26 (not shown in FIG. 13) is disposed above the blocking body 29 of the guide insert 14. The relative locking surface 48 of the locking means 23 in the moving direction y forms a moving end stop.

In Fig. 14, the operating lever is further displaced in the moving direction x to its unlocked position. This results in a corresponding displacement of the fixed extension 18 within the transfer chamber 30. In this position, the locking bar protrusion 26, which is not shown, is laterally displaced relative to the blocking body 29 and is no longer able to perform its holding down function. As a result, when the inner tube 12 relatively moves with respect to the outer tube 11, the blocking body 29 escapes from the locking groove 13 (see Figs. 4 and 5) Function. The compressed helical compression spring 14 in Fig. 14 causes the relative lock surface 48 of the relative lock means 23 to move in a direction corresponding to the correspondence of the wall portion 19 of the fixed extension portion 18 Causing the rearward displacement of the actuating lever 20 until it restrains further displacement in the direction of movement y by striking against the locking surface 51 side.

If the relative lock means 23 is shortened, that is, rather than closing the groove chamber as in FIGS. 1 to 5 and 9 to 14, If partial rearward displacement is enabled, the unlocking is realized by the movement of the operating lever in direction x and direction y.

The operating lever, here shown as a slide button in accordance with DE 1 208 787 B, is a half shell or as a full shell surrounding the guide insert 14, for example in EP 1 033 103 B1 Can be similarly formed. Even in this case, the assembly principle according to the present invention does not change. The half shell and the complete shell form an assembly chamber 31 for receiving the fixed extension 18, respectively.

Finally, it should be noted that it is not necessary for the invention to integrate the shielding body 29 integrally with the guide insert 14, which is desirable from the standpoint of assembly. The invention can also be applied to a blocking body 29 loosely mounted in the region of the guide insert 29. This blocking body is equivalent to a blocking body 29 which is integrally coupled with the guide insert 24 as previously described and shown in the drawing with reference to the locking effect and consequently the fixing of the inner tube 12.

An important advantage of the present invention lies in the fact that the guide member is no longer a locking member while maintaining the aforementioned simple construction of the guide insert and the actuating lever. As a result, the guide member, which is also referred to as a guiding means, is not subjected to a load at the time of assembling, thereby reliably preventing a load resulting in corresponding prior damage. Therefore, the separate fixing member is provided in the form of the relative lock means 23 which is loaded only at the time of assembly.

10: Axial partial area of the vacuum cleaner suction pipe
11: 10 outer tube
12: 10 inner tube
The locking recess of 13:
14: Guide insert
15: 14 flange
The end face of 16: 11
The through opening of 17: 11,
The holding extension of 18:14
Wall of 19: 18
20: Operation lever
Wall section of 21:20 ( wall section )
22: 18,
The mating locking mean of 23:20
24: 20 hollow side < RTI ID = 0.0 >
The inner surface of 25:20
The locking-bar projection of 26:20,
27: 26 locking-bar surface
28: 29 mating locking-bar surface
29: blocking body
A deflection chamber / movement chamber of 30:20,
31: 20 deflection chamber / assembly chamber
The rib projections of 32:
33: 21 of the groove (groove)
34: 18 guide surface
35: 20 relative guide surface
36: 11 surface line
37: 11 surface line
38: 20 deflection chamber
40: 22 centering pin
41: helical compression spring
42: 20 working surface
43: 20 protrusions /
44: 11 protrusion / retention wall
45: helical compression spring
46: helical compression spring
47: 20 protrusion
The mating locking surface of 48:23,
49: deflection depression
50: 18 < / RTI >
51: 50 locking face
56: 14 holding tongue
The guide ribs of 57:
58: 12 guide grooves
A: outer surface of 11
B: outer surface of 12
M: the longitudinal center axis of 10
P: Working pressure
R: 12 detent strips
T: separation plane
x: direction
y: direction

Claims (10)

An assembly of a vacuum cleaner suction tube (10) comprising an outer tube (11) and an inner tube (12), a guide insert (14) at least partly sleeved, and an operating lever (20)
The vacuum cleaner suction tube (10) supports the at least partially sleeve-shaped guide insert (14) at one tube end,
- the guide insert (14) has a locking extension (18) oriented radially outwards to support the blocking body (29)
The fixed extension portion 18 of the guide insert 14 includes guiding means for controlling the movement of the operating lever 20 and a locking surface 51 for fixing the operating lever 20,
Characterized in that the actuating lever (20) forms one or more relative locking surfaces (48) interacting with the locking surface (51), with a locking bar, forming a moving chamber (30) Relative guide means for interacting with the guiding means of the extension 18 are arranged,
The operating lever 20 can be moved along the guide means of the fixed extension 18 using the relative guide means to lock or unlock the blocking body 29 using the locking bar. In addition,
The inner tube 12 is arranged at least indirectly in the guide insert 14 and comprises at least one locking groove 13 into which a blocking body 29 of the guide insert 14 is inserted Wherein the inner tube (12) is fixedly engaged with the guide insert (14), the assembly comprising:
The actuating lever 20 comprises an assembly chamber 31 which is arranged in a common movement track of the guide means and the relative guide means and which comprises an actuating lever 20 on the guide insert 14, (18) for assembling said guide means and said relative guide means to enable displacement of said fixed extension (18) along said movement track in an intermeshed state of said guide means and said relative guide means assembly. The assembly according to claim 1, wherein the assembly chamber (31) comprises a relative lock means (23) forming the relative lock surface (48) of the actuation lever (20). 3. An apparatus according to claim 2, characterized in that said relative locking means (23) enable an assembly movement (x) of said fixed extension (18) along said movement track into said movement chamber (30) Wherein said guide means and said relative guide means are in engagement with each other for movement in the opposite direction. 4. An apparatus according to any one of claims 1 to 3, characterized in that the guide means of the fixed extension (18) and the relative guide means of the operating lever (20) interact with each other only in the region of the moving chamber ≪ / RTI > 4. An assembly according to claim 2 or 3, characterized in that said relative locking means (23) is arranged in a common moving track of said guide means and said relative guide means at its rest position, 31), the relative locking means (23) can be displaced from the moving track elastically by spring restoring force by the insertion of the fixed extending portion (18). 4. A method as claimed in claim 2 or 3, characterized in that the relative locking surface (48) of the relative locking means (23) forms a plane (T) separating the assembly chamber (31) from the moving chamber Features an assembly. 4. The apparatus according to claim 2 or 3, wherein two guide means are provided as projections on the side of the fixed extension portion, and two grooves complementarily formed on the side of the operation lever (20) Wherein said guide means and said groove engage each other for movement control. 8. The assembly according to claim 7, wherein the end wall of the fixed extension (18) adjacent to the assembly chamber (31) forms the locking surface (51) of the fixed extension (18). 8. The assembly according to claim 7, wherein said relative locking means (23) are disposed in a common moving track while closing said grooves in the direction of said assembly chamber (31) at a rest position. 8. The assembly of claim 7, wherein the relative locking means (23) assigned to the groove comprises an extended ramp face towards the guide insert (14).

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