EP0886485A1

EP0886485A1 - Mutually telescopable components

Info

Publication number: EP0886485A1
Application number: EP97906137A
Authority: EP
Inventors: Uwe Heider; Hans-Peter Arnold
Original assignee: Vorwerk and Co Interholding GmbH
Current assignee: Vorwerk and Co Interholding GmbH
Priority date: 1996-03-11
Filing date: 1997-02-28
Publication date: 1998-12-30
Anticipated expiration: 2017-02-28
Also published as: GR3033838T3; WO1997033510A1; PT886485E; DK0886485T3; ATE192300T1; ES2146084T3; EP0886485B1

Abstract

The invention relates to mutually telescopable components (3, 5), e.g. pipes, especially vacuum cleaner handle sections, in which selected positions can be engaged by means of a locking component (8), where in addition the locking component (8) has a pressure-operable engagement knob (10) and an engagement projection (13) on the engagement knob (10), where said engagement knob (10) is open for operation on a first telescopic section (5) and the engagement projection (13) engages in a second telescopic section (3). To provide an improved engagement component for telescopic sections, especially one of minimum structural height and with a minimum of parts, it is proposed that the engagement knob (10) project from the outer telescopic section (5) for operation and work together with the inner telescopic section (3) via a rocker-like support.

Description

00001 Telescopic parts 00002

00003 The invention relates to telescopically guided

00004 te parts, for example pipes, in particular partial

00005 sections of a vacuum cleaner, with selected positions

00006 gene can be locked by means of a locking element,

00007 wherein the detent element also has a detent button,

00008 which can be actuated by pressure, and one on the locking button

00009 arranged locking projection, the locking button on

00010 a first telescopic part for actuation is exposed and

00011 the locking projection in a second telescopic part

00012 takes hold. 00013

00014 telescopic handles designed in this way are known

00015 which by means of a key unlockable detent

00016 Length of the telescopically guided parts

00017 can be changed. In a predetermined position

00018 these parts can be fixed again, this

00019 in particular by a latch. From the state of the

00020 technology known components, such as in art

00021 fabric-mounted button, spring element, locking pin, etc.

00022 require a considerable overall height, so that a lower

00023 bring a thickening in a telescopic handle

Consequence has, in particular in the case of stem sections

00025 vacuum cleaner handling difficult. Are further

Known solutions in which locking rockers with axis position

00027 tion can be used. Such an assembly includes

00028 tet a unilaterally solving moment, which only

00029 can be compensated for by other components. 00030

With regard to the above-described prior art

00032 becomes a technical problem of the invention therein

Seen 00033, an improved, especially parts and

00034 construction-minimized locking element for telescopic

00035 other parts specified. 00036 This problem is first and foremost

00037 solved the object of claim 1,

00038 is that the locking button on the outer telescopic

00039 protrudes part for actuation and a rocker-like

00040 supports interacts with the inner telescopic part.

According to this configuration is very simple

00042 a latching of the two telescopically one inside the other

00043 guided parts allows. The entire locking element,

00044 which consists essentially of the locking button and the

00045 locking projection is composed and preferably in one piece

00046 is formed, is between the outer and the inner

00047 ren telescopic part positioned. As an essential

Advantage here turns out that both the

00049 height as well as the components of the locking element formed in this way

00050 mentes are minimized. The rocker-like mode of operation

00051 of the locking element thus formed is preferred by

00052 achieved a support on the inner telescopic part.

00053 There is therefore no need to tilt the locking element

00054 enabling bracket, such as an axle

00055 bracket. The release of the latch between the

00056 two guided parts takes place through

00057 depressing the locking button on the outer

00058 telescopic part protrudes for actuation. As a result of the wip-

00059 pen-like support is arranged on the locking button

00060 nete locking projection from a on the inner telescopic

00061 partially provided locking recess moves. The two

According to this, 00062 telescopic parts are used to change the length.

00063 feasible. In a further development of the invention

Item is provided that the locking button in one piece

00065 with an underside of the locking button

00066 locking projection is connected, the locking projection

00067 via a connecting arm on the side of the locking button

00068 is arranged. The length of the link arm and the

00069 positioning of the rocker-like support are

00070 chosen so that a slight depression of the 00071 locking button already leaving the locking projection

00072 from the locking recess of the inner telescopic part

00073 works. The connecting arm to the locking projection acts

00074 here as a lever arm. An exit is preferred

00075 design, in which the connecting arm is in longitudinal

00076 direction of the telescopic parts, d. H. in telescopic direction

00077 tion extends. It is further preferred that the entire

00078 locking element in a free end region of the outer

00079 telescopic part, especially near the opening level,

00080 through which the inner telescopic part is immersed, arranged

Is net, the connecting arm to the locking projection in

00082 has a direction facing away from the opening plane.

00083 It proves to be particularly advantageous to manufacture

00084 that on the connecting arm facing downward

00085 rocker cam is arranged to rest on an external

00086 surface of the inner telescopic part. Conditional on this

00087 embodiment is the simplest way to

00088 moderate rocker-like support achieved. Further here

00089 proposed that the rocker cam between the

00090 locking button and the locking projection is arranged.

00091 By pushing down the locking button, the whole tilts

00092 locking element around on the outer surface of the inner

00093 telescopic part supporting rocker cams such that

00094 on the side opposite the locking button

00095 of the rocker cam arranged locking projection from a

00096 telescopic inner side locking recess occurs. To one

To achieve favorable handling, it is provided that

00098 the connecting arm in the area between the rocker cam

00099 and the locking projection is chosen larger in length,

00100 as the part of the connecting arm from the rocker cam to

00101 locking button. As a result, a favorable lever arm is

00102 ben, which makes it possible with relatively light impressions

00103 ken the locking button the complete exit of the locking device

00104 jump to reach from the recess. For this

00105 it is further proposed that the rocker cam also 00106 arranged half a projection surface of the locking button

00107 is. The latter is preferably light in a floor plan

00108 oval. However, there are other floor plans

00109 conceivable. It thus follows that the

00110 direction of extension of the connecting arm

00111 knife of the locking button at least that, the connection

00112 arm opposite lever arm. To a

00113 automatic resetting of the locking element in the

To allow 00114 locking position, it is further provided that

00115 the locking button is further formed with a spring arm

00116 for support on an inner wall of the outer telescopic

00117 part. The training is chosen so that a

00118 Depress the locking button to release the locking

00119 takes place against the spring action of the spring arm. Becomes

00120 in the course of the merging or spreading the

00121 telescopic parts released the locking button, so causes

00122 spring arm a spring-loaded action on the

00123 locking button in its original position. Due

00124 the preferred embodiment in which the connection

00125 low-manure between snap button and snap projection

00126 is rigid, this results in the further

00127 advantageous effect that the locking projection in the train

00128 of telescoping the telescopic parts

00129 le spring loaded on the outer surface of the inner

00130 telescopic part lies and independently in the next

00131 found detent formation to form the telescopic

00132 engages. In a preferred embodiment

00133 device of the subject matter of the invention it is provided that the

00134 spring arm essentially in the same direction as the

00135 connecting arm is aligned. Accordingly,

00136 pulls the spring arm like the connecting arm in longitudinal

00137 to extend the telescopic parts.

00138 The section of the

00139 spring arm is advantageously in the locking button

00140 facing region of the rocker cam provided. White 00141 ter is proposed that two spring arms are provided

00142 are. These can be parallel to each other, for example

00143, preferably with the connecting arm in the middle

00144 the spring arms is arranged. In a training course

00145 of the subject matter of the invention provides that in the

00146 sliding state only the locking button in one of the

00147 telescopic parts is caught, but the rocker cam

00148 and the locking projection sliding freely with the other

00149 telescopic part, in particular with the inner telescopic

00150 part, work together. As a result, the locking element is in

00151 in the simplest way without additional fasteners,

00152 which by the constant engagement of the locking button in the

00153 this receiving opening of the preferably outer

00154 telescopic part held captive. The locking button

00155 of the locking element thus serves both as an actuating

00156 as well as a mounting element. The rocker cam and

00157 the locking projection slide in the course of a telescope

00158 of the two parts freely on the outer wall of the inner

00159 telescopic part, this preferably after a short time

00160 Depress the locking button to release the locking

00161 and subsequent telescoping, being in the course

00162 the telescopic pressure on the

00163 locking button is lifted. The locking projection supports

00164 this due to the bias mentioned

00165 the spring arm on the inner telescopic part. It is

00166 but also conceivable that if maintained

00167 the pressurization of the locking button in the course of

00168 Telescoping the locking projection at a distance from the

00169 inner telescopic part slides over this. In

00170 this position is only the rocker cam and

00171 optionally a portion of the connecting arm

00172 the inner telescopic part. Furthermore,

00173 suggest that a chamber between the telescopic parts

00174 is formed and that the locking element in the chamber

00175 is caught without being firmly connected to one of the parts 00176 to be. This is a kind of floating storage

Given the locking element between the telescopic parts.

00178 It is further proposed that a chamber floor

00179 formed by the outer surface of the inner telescopic part

00180 det. The chamber ceiling is preferred by the interior

00181 wall of the outer telescopic part formed, one

00182 axial delimitation of the chamber preferably by an in

00183 the inner wall of the outer telescopic part radially after

00184 inside projecting Karnmerwand is formed. This is

00185 spaced from the mouth opening of the outer telescope

00186 part for the passage of the inner telescopic part,

00187 wherein this mouth opening in use, for example.

00188 be closed by a clip-on element

00189 can. This is one in both axial and in

00190 radial direction closed chamber for storing the

00191 locking element formed. The outer telescopic part

Elements of the chamber assigned to 00192 form a receptacle

00193 for the locking element. In this, the locking element for

00194 inserted in such a way that the locking button through the

00195 passage opening on the telescopic part protrudes. After that

00196 the inner telescopic part in the outer telescopic part

00197 inserted, after which the locking element captive in

00198 its position is held. Here is an axial one

00199 delimitation by the chamber wall and a flank of the

00200 opening for the locking button and a radial

00201 bracket given by the two telescopic parts, wherein

00202 the inner telescopic part any number of locking recesses

00203 can have. In a further development of the

00204 object is proposed that a chamber wall

00205 the locking state by resting on the locking projection

00206 strengthens. In particular, this chamber wall in

00207 the locking position a tightening effect

00208 supports. This is solved, for example, by the fact that the chamber

00209 wall is arranged transversely to the telescopic direction.

00210 It is further proposed that the chamber wall in 00211 a cross-section is arranged obliquely.

00212 An embodiment is preferred in which the

00213 sloping chamber wall that the locking projection

00214 associated end portion of the locking element

00215 is. It is known that the outer telescopic part, for example.

00216 when used as a handle of a vacuum cleaner,

00217 to be provided with a handle. About this handle

00218 becomes a pressure on the during normal use

00219 outer telescopic part in the axial direction, which

00220 pressure load must not lead to the fact that

00221 rest is automatically resolved. Rather, it is

00222 see that this has a tightening effect

00223 is. The latter is supported in that

00224 axial pressurization of the outer telescopic part

00225 the radially inwardly projecting, sloping cam

00226 merwandung the free end of the connecting arm or

00227 acts directly on the area of the locking projection

00228 such that the locking projection in the locking position with

00229 of the locking recess of the inner telescopic part

00230 will hold. For the locking element result in

00231 Load changes changing attachment points in front of and behind the

00232 locking projection. Here, the element is in both

00233 load directions held self-locking. In a pre-

00234 partial development is provided that the rocker

00235 cam essentially as transverse to the telescopic direction

00236 lying cylinder is formed. Here, the

00237 diameter of the cylinder should be such that

00238 two contact points, on the one hand on the outer wall of the

00239 inner telescopic part and on the other on the inner wall

00240 fertilizer of the outer telescopic part are formed. Here-

00241 is a reliable pivoting of the locking element

00242 given when actuated. Finally it turns out

00243 as advantageous that an extension of the rocker

00244 cam in the direction transverse to the telescopic direction larger

00245 is an opening dimension of the locking recess in the same 00246 direction. When the two parts are telescoped

00247 therefore moves the cylindrical rocker cam over the

00248 Rastausnehrπungen away without diving into them. It

00249 is also conceivable for this, the rocker cam independently

00250 gig of its cross-sectional configuration regarding

00251 its aligned transversely to the telescopic direction

00252 Extension in two parts such that a measure

00253 between these two parts at least the opening

00254 dimension corresponds to the locking recess. With such a

00255 gene training slide the two parts of the seesaw

00256 kens in the course of telescoping on both sides of the

00257 ausnehπtung past this. The previously described

Embodiments of the invention are both in the

00259 cross-section round as well as non-round, such as oval

00260 telescopic tubes applicable. The entire locking element,

00261 consisting of locking button, locking projection, connecting arm,

00262 rocker cams and spring arms is preferred as an artificial

00263 fabric injection molded part. However, there are also

00264 re materials conceivable in the area of the spring arms

00265 have a corresponding effect. Due

00266 this configuration gives the further advantage

00267 that a fixation of the entire locking element for example

00268 wise, only by merging the two

00269 telescopic parts. An elaborate location

00270 tion on one of the two telescopic parts is omitted. This

00271 is particularly advantageous in terms of production technology.

00272 Furthermore, such a locking element can be inexpensively

00273, whereby the height is minimized and the number of parts

00274 number reduced to a minimum, preferably to a part

00275 is adorned. 00276

00277 The invention is based on the drawings,

00278 which only represent two exemplary embodiments,

00279 explained in more detail. It shows: 00281 Figure 1 is a telescopic vacuum cleaner 00282 having stem sections. 00283 00284 FIG. 2 shows the section according to line II-II in FIG. 1 00285 through the plug-in area between an inner and an outer telescopic part, for illustrating the position and function of a locking element of a first embodiment, in a 00289 rest position; 00290 00291 FIG. 3 shows a representation corresponding to FIG. 2, 00292 however after the locking between 00293 inner and outer telescopic part has been released; 00294 00295 Figure 4 is a plan view of the entrance area and 00296 the locking element arranged there. 00297 00298 FIG. 5 the latching element in a perspective 00299 individual representation; 00300 00301; FIG. 6 an individual representation of the latching element in 00302 of a second embodiment; 00303 00304 FIG. 7 shows a sectional illustration according to FIG. 2, but 00305 relating to the second embodiment, with the position of the latching element 00308 shown in 00306, with dash-dotted lines, depressed 00308 to release the latching; 00309 00310 Fig. 8 is an enlarged detail view according to 00311 the area VII-VII in Fig. 7. 00312 00313 A vacuum cleaner 1 is shown and described first with reference to 00314 Figure 1, which is designed as a handheld device 00315. The latter has a handle 2, 00316 which is composed of two telescopic parts 00317 which are guided into one another. A first, inner telescopic part 3 00318 is connected at one end to a vacuum cleaner housing 4 00319 and at the other plunges into the outer telescopic part 5, 00320 which the latter forms a handle 6 in its free end region 00321. 00322 00323 For the entry of the inner telescopic part 3 into the outer 00324 telescopic part 5, the latter has an end opening 7 which has the 00325 cross section. A locking element 8 is positioned near 00326 of this opening 7, 00327 which effects the locking of inner telescopic part 3 and 00328 outer telescopic part 5. In order to enable the locking in 00329 predetermined positions, the 00330 inner telescopic part 3 has an outer surface in outline 00331 approximately circular, at a preselected distance from one another 00332 the arranged locking recesses 9. 00333 00334 The locking element 8 of a first embodiment according to 00335 FIGS. 2 to 5 has a locking button 10, the 00336 outline is oval. On the upper side - viewed with 00337 in relation to FIG. 5 - an actuating surface 11 is formed on the locking button 10 00338. Furthermore, with 00339 reference to FIG. 5, it can be seen that on the underside of the locking button 10, a connector 12 00341 that is laterally rejecting it is integrally formed. This extends in 00342 oval layout of the locking button 10 in direction of the smaller diameter of the locking button and 00344, starting from the locking button 10, is angled downwards in the direction of its 00345 free end. 00346 00347 At its free end, the connecting arm 12 00348 has a locking projection 13 on the underside, which in cross section 00349 is roughly modeled on the layout of a locking recess 9, preferably circular. 11

The dimensions are further selected so that a 00353 width measured transverse to the 00352 longitudinal extension of the connecting arm 12 corresponds to approximately 0.3-0.5 of the larger diameter of the snap button 00355 10 measured in the same direction. The locking projection 13 has a diameter which is selected to be smaller than the width of the connecting arm 12 described previously 00357. 00358 00359 Spring arms 00360 14 are formed on both sides of the connecting arm 12, which, like the connecting arm 00361 12, is also below the Root button 10 in these roots. 00362 The spring arms 14 are aligned essentially in the same direction as the connecting arm 12 and are 00364 further, against the connecting arm 12, slightly bent upwards to 00365. Connecting arm 12 and spring arms 14 er¬ 00366 extend in the embodiment shown in 00367 direction of the longitudinal extent of the telescopic parts, ie 00368 in the telescopic direction. 00369 00370 Approximately in the transition area from the spring arms 14 or from the 00371 connecting arm 12 to the locking button 10, a downward-looking rocker cam 00373 ken 15 is formed below the 00372 connecting arm 12, which has a nose-like shape in cross-section 00374 ge. This rocker cam 15 is thus positioned in 00375 a projection between the latching button 10 and the 00376 latching projection 13, the rocker 00377 cam 15 also being arranged outside a projection surface of the latching button 10. 00379 00380 FIGS. 2-4 show the state of the egg of the raster element 00381 element 8. The locking button 10 is for actuation on the outer telescopic part 5, for which the latter 00383 has a corresponding passage opening 16. The 00384 locking projection 13 has entered a locking recess 9 of the inner 00385 ren telescopic part 3, the locking 00386 element 8 is supported on the rocker cam 15 on the outer surface 00387 of the inner telescopic part 3. A further 00388 support is provided to the locking element 8 by the spring arms 00389 me 14, which are resiliently supported on the inner wall of the outer 00390 telescopic part 5. There is thus an exact position definition of the locking element 8. 00392 The chamber 17 formed in the area between the inner telescopic part 3 and 00393 outer telescopic part 5 for receiving 00394 of the latching element 8 can be closed in the area of the mouth opening 00395 7, for example by means of a clip-on closure element, not shown in 00396. 00397 00398 In the shifted state, only the locking button 10 is caught in the 00399 area of the passage opening 16 in the outer 00400 telescopic part 5. The rocker cam 15 connected to the connecting arm 12 00401 and the locking projection 13 00402, on the other hand, interact freely with the inner telescope 00403 part 3. The locking element 8 is also securely caught in this 00404 state in the 00405 chamber 17 formed between the telescopic parts, without the addition of specially designed fastening or locking means 00407. A kind of floating mounting of the 00408 locking element 8 in the chamber 17 is thus realized, a 00409 chamber ceiling 18 being formed by the inner surface of the outer 00410 telescopic part 5 and a chamber bottom 19 by the outer surface of the inner telescopic part 3. 00412 00413 Due to the preload caused by the spring arms 14, the locking element 8 is loaded in a basic position 00415 according to FIG. 2 into a stop-limited locking position 00416. This is further achieved by the rocker-like 00417 support, the tip of the rocker cam 00418 15 forming the tilt axis of the locking element 8. 00419 00420 The rigid connecting arm 12 is in

00421 aligned this basic position so that the on this

00422 arranged locking projection 13 also spring-loaded

00423 stretches in the recess 9. Conditionally

00424 that the diameter of the locking projection 13 in

00425 the embodiment shown is dimensioned smaller

00426 as the width of the connecting arm 12 is supported

00427 the latter in the locking position on both sides of the locking

00428 take 9 on the outer surface of the inner telescopic part

00429 3 from. However, versions are also conceivable for

00430 which the width of the connecting arm 12 corresponds to the

00431 corresponds to the locking projection 13. The previously described

00432 bene position can only be canceled emphasized. 00433

00434 This resolution of the snap connection between the inner

00435 telescopic part 3 and the outer telescopic part 5 is through

00436 simply push the locking button 10 in the direction

00437 of the arrow P can be carried out (cf. FIG. 3). The

00438 Depressing the locking button 10 causes a rocker-like

00439 term pivoting of the locking element 8, in the course

00440 of depressing the link arm 12 over the wip

00441 pennocken 15 is shifted upwards such that

00442 sen underside locking projection 13 from the locking

00443 Nehrπung 9 of the inner telescopic part 3 occurs. After that

00444 is a merging of the two

00445 allows telescopic parts, this for length changes

00446 of the entire handle 2. 00447

00448 due to the resilient support of the spring arms 14

00449 on the inner wall of the outer telescopic part 5

00450 the locking element 8 after releasing the locking button

00451 10 back to its basic position according to FIG.

00452 moves. Here, the locking projection 13 is in overlap

00453 to a recess 9, so it turns itself

00454 the desired locking position of the two telescopic parts 00455 a. However, the locking button 10 in the course of

00456 Moving the inner or outer telescopic part

00457 released, the locking projection is initially supported

00458 13 on the outer surface of the inner telescopic part 3.

00459 As soon as a next rest stop in the course of moving

00460 take 9 overlaps the locking projection 13,

00461 drives the latter, due to the spring tension,

00462 automatically into the recess 9.

00463

00464 The rocker cam 15 has a transverse to the Telesko¬

00465 direction measured width, which is larger

00466 as the opening dimension of the recess 9 in the same

00467 direction. In the course of telescoping the two

00468 Parts 3 and 5 thus overrun the rocker cam 15

00469 locking recess 9 without immersing them.

00470

00471 However, training is also conceivable in which

00472 the width of the rocker cam 15 the opening dimension of the

00473 catch recess 9 corresponds to or is selected smaller.

00474 Although this leads to a short telescope

00475 early occurrence of the rocker cam 15 in the Rastaus¬

00476 take 9, but without, due to the in Quer¬

00477 cut nose-like, rounded shape of the rocker cam

00478 15 to achieve an arresting inhibition.

00479

00480 in FIGS. 6 to 8 is a second embodiment

00481. A locking element 8 is shown here

00482 sen connecting arm 12 from two approximately the same length

00483 sections 12 'and 12' ', the er¬

00484 ste, the locking button 10 associated section 12 'a,

00485 width measured transversely to the telescopic direction

00486 points, which is larger than the width of the second

00487 section 12 '' in the same direction. This second

00488 section 12 '' forms an extension of the first

00489 section 12 'and is, based on the transverse 00490 Extension of the entire connecting arm 12, in the middle

00491 the first section 12 * molded onto this. In the over-

00492 transition area from the first section 12 'to the second outlet

00493 cut 12 '' is the rocker cam 15 in the shape of a cross

00494 trained to the telescopic direction lying cylinder

00495 det, whose dimension in transverse extension is that of the first

00496 subsection 12 'corresponds. The diameter of the

00497 cylindrical rocker cam 15 is selected so that

00498 segment-like bumps 15 'and 15' 'both on the underside

00499 as well as on the upper side of the connecting arm 12. 00500

00501 In contrast to the first embodiment described above

00502 example of the rocker cam 15 is not in here

00503 immediate area of the locking button 10 but much-

00504 more centrally between locking button 10 and locking projection 13

00505 formed from the connecting arm 12. 00506

00507 on both sides of the second section 12 ″ of the connecting

00508 poor 12 are essentially in the same direction as

00509 the connecting arm 12 aligned, but counter

00510 the connecting arm 12 slightly angled upwards

00511 spring arms 14 are provided, which in both sides of the

00512 projecting second connecting arm section 12 '

00513 Root areas of the cylindrical rocker cam 15. 00514

00515 The locking element 8 thus formed is in a between

00516 the inner telescopic part 3 and the outer telescopic part

00517 5 formed chamber 17 floating, the

00518 locking button 10 for actuation by a

00519 opening 16 of the outer telescopic part 5 protrudes. 00520

00521 The chamber 17 is delimited radially by a through which

00522 inner wall of the outer telescopic part 5 formed

00523 chamber ceiling 18 and through one through the outer wall

00524 of the inner telescopic part 3 formed chamber floor 00525 19. The axial delimitation of chamber 17 is one end

00526 through a flank of the passage opening 16 and other

00527 ends by one of the inner wall of the outer Tele¬

00528 scope part 5 radially inwardly pointing chamber wall 20

00529 defined.

00530

00531 To assemble the locking element 8, this is in the

00532 chamber 17 of the outer telescopic part 5 inserted. To

00533 inserting the inner telescopic part 3 is the locking

00534 element held captive in position, this

00535 without further fasteners. The mouth opening 7

00536 of the outer telescopic tube 5 is shown in the

00537 example of leadership by a snap-on closure element

00538 ment 21 closed.

00539

00540 The locking projection 13 is due to the on the Innenwan¬

00541 extension of the outer telescopic part 5 or on the thus formed

00542 Deten Karrari blanket 18 supporting spring arms 14 always in

00543 biased towards a rest position. At a

00544 actuation of the locking element by pressing the

00545 locking button 10 (see arrow P in Fig. 7) tilts it

00546 locking element 8 on the rocker cam 15 or on the

00547 seg entarti¬ lying on the inner telescopic part

00548 gen Höcker 15 ', which is a migration of the locking projection

00549 13 from the recess 9 results (see dash

00550 dotted representation in Fig. 7). The cylindrical one

00551 rocker cam 15 can have a diameter

00552 sen, which supports both the lower hump

00553 15 'on the chamber floor 19 and the upper hump

00554 15 '' on the chamber ceiling 18.

00555

00556 The connecting arm 12, in particular the the Rastvor¬

00557 jump 13 bearing section 12 '' is on the outside

00558 wall of the inner telescopic part 3 facing side

00559 so that this section 12 '' in one 00560 locking position - related to the axial extent - on both sides -

00561 tig of the recess 9 on the outer wall of the interior

00562 ren telescopic part 3 rests. This results in

00563 Load changes changing attachment points in front of and behind the

00564 locking projection 13. The locking element is in

00565 self-locking in both load directions. 00566

00567 In the shifted state according to the dash-dotted representation

00568 in Fig. 7 is only the locking button 10 in the loading

00569 the passage opening 16 in the outer telescope

00570 part 5 caught. The rocker cam 15 and the detent

00571 jump 13, however, act freely sliding with the inner

00572 telescope part 3 together. 00573

00574 In a normal use of the telescopic parts, e.g.

00575 with a vacuum cleaner 1, is via the handle 6

00576 Pressure in the axial direction on the locking connection

00577 exercised. In order to automatically cancel the

00578 Preventing latching becomes the tightening effect

00579 by the arranged transversely to the telescopic direction

00580 chamber wall 20 supports. The latter is in

00581 a cross section formed obliquely. In

00582 the exemplary embodiment shown closes the chamber

00583 wall 20 to the inner wall of the outer telescopic tube

00584 5 an angle of approx. 93 °. However, there are also

00585 training conceivable in which the chamber wall one

00586 has a smaller or larger angle of attack. The

00587 arrangement of the chamber wall 20 is further selected so that

00588 this immediately before the free end of the connection

00589 mes 12 positioned in the region of the locking projection 13

00590 is. 00591

00592 When the telescopic is pressurized

00593 handle 2 there is a minimal axial displacement

00594 tion of the outer telescopic part 5 in the direction of arrow a 00595 (see Fig. 8). Through this act in the direction of arrow a

00596 en force becomes free via the sloping chamber wall 20

00597 end of the connecting arm 12 so acted that

00598 this with the locking projection arranged on the underside

00599 13 is pressed into the locking position.

00600

00601 The locking projection 13 is in a direction transverse to

00602 telescopic direction equal to the second section 12 ''

00603 of the connecting arm 12, which results in

00604 that the extension of the rocker cam 15 in the same

00605 direction is greater than the locking projection 13 and thus

00606 is also larger than an opening dimension that

00607 jump 13 adapted locking recesses 9. This has to

00608 consequence that the rocker cam 15, in particular the bottom

00609 right, assigned to the inner telescopic part 3, segmentarti¬

00610 ge cusps 15 'in the course of a telescope over the

00611 locking recesses 9 slides away, on both sides of the

00612 locking recesses 9 support. The seesaw

00613 cam 15 thus does not occur in the course of the telescoping

00614 into the recesses 9.

00615

00616 The consisting of the individual sections described

00617 locking element 8 of both embodiments is as material

00618 formed plastic injection part, with what

00619 the components are minimized to one part.

00620

00621 The locking element 8 is designed so that a fixation

00622 the same through the two telescoping into each other

00623 parts done. A complex storage on one of the

00624 telescopic parts omitted. This further shows

00625 locking element according to the invention on a construction height, which on

00626 a minimum is reduced.

00627

00628 All disclosed features are essential to the invention. In

00629 the disclosure of the application is hereby also the 00630 disclosure content of the associated / attached priori

00631 full documents (copy of pre-registration)

00632 was included, also for the purpose of characteristics of this

00633 documents in claims of the present application with

00634 record.

Claims

00635 CLAIMS 00636 00637 1. Parts (3, 5) which can be telescoped into one another in 00638, for example, pipes, in particular stem sections of a 00639 vacuum cleaner (1), selected positions being lockable by means of 00640 of a locking element (8), further locking element being 00641 (8) has a latching button (10), 00642 which can be actuated by pressure, and a latching projection (13) arranged on the latching button 00643 (10), the latching button (106) on a first telescopic part (5) for actuation 00645 supply is exposed and the locking projection (13) engages in a 00646 second telescopic part (3), characterized gekennzeich¬ 00647 that the locking button on the outer telescopic part (5) 00648 protrudes for actuation and a rocker-like 00649 support with the inner telescopic part (3rd ) acts together 00650. 00651 00652 2. Parts which can be telescoped into one another according to claim 00653 or in particular thereafter, characterized in that the locking button (10) is integrally connected to a locking projection 00656 (13) on the underside of the locking button (10) , wherein the locking projection (13) via 00657 a connecting arm (12) is arranged laterally on the locking knob 00658 (10). 00659 00660 3. Telescopically guided parts according to one of 00661 or more of the preceding claims or in particular 00662 especially according to it, characterized in that on the 00663 connecting arm (12) a downward rocker switch 00664 ken (15) is arranged to support an outer surface of the inner telescopic part (3). 00666 00667 4. telescoping parts according to one 00668 or more of the preceding claims or in particular 00669 thereafter, characterized in that the rocker 00670 cams (15) between the locking button (10) and the locking device

00671 jump (13) is arranged. 00672

00673 5. Telescopically guided parts after one another

00674 or more of the preceding claims or in particular

00675 special afterwards, characterized in that the rocker

00676 cams (15) outside a projection surface of the locking

00677 button (10) is arranged. 00678

00679 6. Telescoping parts after one another

00680 or more of the preceding claims or in particular

00681 special afterwards, characterized in that the locking

00682 button (10) further formed with a spring arm (14)

00683 is for support on an inner wall of the outer

00684 telescopic part (5). 00685

00686 7. Telescopically guided parts after one another

00687 or more of the preceding claims or in particular

00688 special afterwards, characterized in that the spring

00689 arm (14) essentially in the same direction as the

00690 connecting arm (12) is aligned. 00691

00692 8. Telescoping parts after one another

00693 or more of the preceding claims or in particular

00694 special afterwards, characterized in that two spring

00695 arms (14) are provided. 00696

00697 9. Telescoping parts after one another

00698 or more of the preceding claims or in particular

00699 especially afterwards, characterized in that the connection

00700 low in manure (12) centrally to the spring arms (14)

00701 is. 00702

00703 10. Parts that can be telescoped into one another

00704 or more of the preceding claims or in particular 00705 in particular thereafter, characterized in that

00706 sliding state only the locking button (10) in the

00707 one of the telescopic parts (5) is caught, against that

00708 rocker cams (15) and the locking projection (13) freely slide

00709 tend with the other telescopic part, in particular with the

00710 inner telescopic part (3), interact.

00711

00712 11. Telescoping parts after one another

00713 or more of the preceding claims or insbe¬

00714 special afterwards, characterized in that between

00715 the telescopic parts (3 and 5) formed a chamber (17)

00716 and that the locking element (8) in the chamber (17)

00717 is caught without being stuck with any of the parts (3 and 5)

00718 to be connected.

00719

00720 12. Parts that can be telescoped into one another

00721 or more of the preceding claims or insbe¬

00722 special afterwards, characterized in that a chamber

00723 floor (19) through the outer surface of the inner Teleskop¬

00724 part (3) is formed.

00725

00726 13. Parts that can be telescoped into one another

00727 or more of the preceding claims or insbe¬

00728 special afterwards, characterized in that a Kammer¬

00729 wall (20) the resting state by resting on the Rastvor¬

00730 jump (13) reinforced.

00731

00732 14. Parts that can be telescoped into one another

00733 or more of the preceding claims or insbe¬

00734 special afterwards, characterized in that the Kammer¬

00735 wall (20) is arranged transversely to the telescopic direction.

00736

00737 15. Parts that can be telescoped into one another

00738 or more of the preceding claims or insbe¬

00739 in particular, characterized in that the chamber 00740 wall (20) in a cross section running obliquely

00741 is assigned. 00742

00743 16. Parts that can be telescoped into one another

00744 or more of the preceding claims or in particular

00745 special afterwards, characterized in that the rocker

00746 cams (15) essentially as transverse to the telescopic

00747 pier direction lying cylinder is formed. 00748

00749 17. Parts that can be telescoped into one another

00750 or more of the preceding claims or in particular

00751 special afterwards, characterized in that a

00752 Extension of the rocker cam (15) in the direction transverse to

00753 telescopic direction is larger than an opening dimension

00754 locking recess (9) in the same direction. 00755

00756