WO1996009937A1

WO1996009937A1 - Steering roller

Info

Publication number: WO1996009937A1
Application number: PCT/EP1995/003829
Authority: WO
Inventors: Uwe Lips; Uwe Harksen; Uwe Stickel
Original assignee: Tente-Rollen Gmbh & Co.
Priority date: 1994-09-28
Filing date: 1995-09-27
Publication date: 1996-04-04
Also published as: FI962211A; FI962211A0; DE19581082D2; EP0729416A1; AU3743595A

Abstract

The invention concerns a castor (3) with a running wheel (4), an attachment pin (9) and a fork (15), the latter mounted on an attachment pin (9) so as to rotate about a vertical axis (8), and with a catch element (11) which engages with a notch recess (13, 25) and is mounted so as to rotate about a substantially horizontal axis (10) to allow switching between an engaged position and a release position by changing the direction of turn of the running wheel (4). The catch element (11) in addition is provided with a catch arm (23) on a first side of the axis (10) and a second actuating arm on the other side of the axis (10). To ensure reliable operation, the invention proposes that a driving component (5, 2) which engages with the running wheel (4) and can pivot relative to the actuating arm (24) should be provided on the actuating arm.

Description

00001 swivel castor 00002

00003 The invention relates to a swivel castor with a running

00004 rad, a mounting pin and a fork, which

00005 fork on the mounting pin about a vertical axis

00006 is rotatably mounted, further with a locking part, wherein

00007 the locking part can be triggered together with a locking recess

00008 acts and the locking part by an essentially horizontal

00009 central axis is rotatably mounted for adjustment

00010 between a rest position and a release division,

00011 what adjustment by changing the roller

00012 can be reached, with the latching part continuing to open

A first side of the axis arranged locking arm and

00014 a second one, arranged on the other side of the axis

00015 Neten actuating arm. 00016

Such a roller is for example from the EP

00018 B 1 424234 known. Next is the state of the art

00019 to point out the EP AI 424233. Beyond that too

00020 to Japanese laid-open patent application 55-156702, the

00021 U.S. Patent 3881216 and EP Bl 370716,00022

The invention is concerned with the technical

00024 problem, a reliable and possible

00025 simply constructed, from the direction of rotation of the impeller

00026 dependent locking device to specify. With help

00027 this locking device is a swivel lock

To achieve 00028 the roller, which is a simplified

00029 handling, especially when the shopping cart is full,

Can achieve 00030, as is also the case in detail

00031 above mentioned documents. 00032

00033 This technical problem is first and foremost

Solved in the subject matter of claim 1, wherein

00035 is geared to that on the actuating arm 00036 interacting with the impeller, relative to the actuation

00037 trained low-pivot pivoting driving arm

Is 00038. This configuration leads to an essential

00039 better interaction in particular

00040 a release of the locking position between the locking part and

00041 the impeller. The pivoting arrangement of the driver

00042 mearms on the actuating arm enables in another 00043 embodiment that the driving arm in such

00044 angle occurs that when the direction is reversed

00045 impeller with a wedge between the security

00046 impeller and the driving arm enters, so at the same time

00047 for a reliable immediate solution of the

00048 lung leads. For this purpose, it is also preferred that the co-operator

00049 arm with limit stop between two positions

00050 is pivotable. It is particularly beneficial if

00051 the driving arm in one of the locking positions of the locking arm

00052 corresponding position with a tangent to the barrel

00053 rad includes an obtuse angle. Especially with

00054 Releasing the locking position can cause very high forces

00055 ten. For example, if a shopping cart on which

Such a castor is preferably attached to

00057 stands on a sloping surface. Because of

00058 of the configuration described here act on a

00059 reversal of the direction of rotation of the impeller high solution forces

00060 on the locking part. The driving arm is over a

00061 dead center division moved. The blunt described

00062 angle leads to a practically always given

00063 take between the driving arm and the impeller. In

Another configuration is provided that the locking part

00065 is rotatably attached to the actuating pin. The

00066 locking recess is in this case relative to the

00067 fastening pin rotatable part of the roller trained

00068 det. The locking recess in the fork is preferred

00069 trained. The driving arm can also be considered eccentric

00070 mounted circular or circular on the locking part 00071 shaped driving part designed

00072. Such a driving part is also preferably single.

00073 borrowed between two stop-limited positions

00074 tiv rotatable to the actuating arm. So this is

00075 receiving part only pivotable with respect to the latching part

00076 bar, but not rotatable. The entrainment part can

00077 have knurled or toothed surface. Thereby,

00078 that the entrainment part with regard to one in relation to

00079 its area of engagement is circular or

00080 mig formed area, eccentrically on the locking part

00081 is mounted, the driving part also preferred

00082 is designed like a wheel or roller,

00083 that an adjustment of the locking part is always a clear

00084 before movement of the driving part causes. Is preferred

00085 also provided that the adjustment of the locking part

00086 always over a dead center position of the driving part

00087 is achieved with respect to the locking part. It turns out

A relatively clear location of the locking part depending on

00089 direction of rotation of the impeller. The invention also suggests

Before that the driving part with respect to the locking part

00091 is only pivotable. On the one hand, one could

00092 certain rotatability must be provided, on the other hand,

00093 in order to reliably secure the detent position or the release position

To be able to achieve lung, be assured that

00095 entrainment of the locking part when changing the

00096 direction of rotation of the impeller takes place. For this it is

00097 in part if the driving part with respect to the rest part

00098 les is only pivotable, so the driving part

00099 not rotating relative to its eccentric axis of rotation

00100 bar. The swivel angle can be relatively limited

00101, for example, are in the range of 30 to 60 degrees.

00102 The pivot angle is preferably approximately 45 degrees. The

00103 driving part itself can on its outer peripheral surface

00104 before it interacts with the impeller,

00105 delt or toothed. The outer surface of the take-away 00106 can also, for example, a rubber cover

00107 or consist of a rubber bead.

The locking part can now both within the scope of the invention

00109 be fixed to the fork as well as fixed

00110 standing with the locking pin so that the fork is rela-

00111 tiv to the locking part rotates when pivoting

00112 swivel castor, in the event that the locking part on the fork

00113 attached, the invention also provides that

00114 locking part on the fork is spring-supported. The spring

00115 support is implemented in such a way that a respective

00116 tension of the locking part given in the locking position

00117 is. The spring preload allows it when the

00118 not yet reached that position

00119 a change of position of the driving part can take place without hindrance

00120 can. In addition, it is also preferred that the latching

00121 part in total, seen in a vertical cross section,

00122 is U-shaped. The U shape is already in the

00123 installation state open to the mounting pin.

00124 This configuration also enables simple removal

00125 education regarding existing (standard) running

00126 roller parts. The fork is held by the U-shaped

00127 partially encompassed on the front without a

00128 change to the fork is required. The executions

00129 gen apply to the driving part in the same

00130 way regarding the driving arm and vice versa. Essential

00131 is also loaned in both embodiments that

00132 pulls the interaction with the impeller, at least

00133 with a locked straight-ahead position

00134 des, with a shoulder area of the impeller.

00135 This affects the impeller

00136 the approximately with the interaction with the driving arm

00137 or the driving part triggered wear attack

00138 counter. The wear attack is not on the surface

00139 marriage, which is always with the underground on which the

00140 roller unrolled, is in contact. [00141] The invention is further with reference to FIG

00142 the attached drawing, which is only an embodiment

00143 illustrates example. Here 00144 shows

00145 Fig. 1 is a side view of a shopping cart

00146 which a roller with a

00147 detent is attached, 00148

00149 FIG. 2 is a front view of the roller,

00150

00151 Fig. 3 is a side view of the roller,

00152

00153 FIG. 4 is a rear view of the roller,

00154

00155 Fig. 5 is a bottom view of the roller,

00156

00157 Fig. 6 shows a cross section through the object

00158 Fig. 5, cut along the line VI-VI, 00159

00160 FIG. 7 shows an illustration according to FIG. 6, with a

00161 representation of the entrainment part at

00162 opposite running direction of the impeller, 00163

00164 Fig. 8 is a perspective view of a first

00165 locking body with driving part, 00166

00167 FIG. 9 shows a representation according to FIG. 8 of a second one

00168 embodiment, 00169

00170 Fig. 10 is a side view of a roller of a

00171 another embodiment, 00172

11 shows the roller according to FIG. 10, in which

00174 rear view, 00176 Fig. 12 shows a cross section through the roller

00177 Fig. 10, 00178

00179 Fig. 13 depending on the running direction of the impeller, 00180

14 shows a cross section through a roller

00182 another embodiment, 00183

15 shows the roller according to FIG. 14 after a

00185 the direction of rotation of the impeller 00186 was reversed

00187 is shown and described, cf. 1, a one

00188 shopping cart 1 with four rollers, two rollers

00189 2 in the usual direction of travel on the front

00190 shopping carts are arranged and two castors 3 in

00191 direction of travel arranged on the back of the shopping cart

00192 are net. The rollers 3 are with a directionally fixed

00193 position equipped as above and below

00194 is further described in detail. 00195

00196 From Figures 2 to 5 is the arrangement of the

00197 locking device on a roller 3 and the Zusa -

00198 menu effect with an impeller 4 of the roller 3

00199 NEN. The following described in more detail

00200 benen driving parts 5 each act with a shoulder

00201 area 6.6 'of the impeller 4, laterally to a zenith

00202 of the impeller 4, together. The driving part 5 is

00203 borrowed an axis of rotation 7 of the impeller 4, in a side

00204 views according to FIG. 3, to an axis 8 of the fastening

00205 pin 9 arranged offset. On the other hand there is one

00206 axis of rotation 10 of the locking part 11 essentially at or

00207 on a vertical V, which is in the side view of the

00208 Fig. 3 goes through the axis 7 of the impeller 4. To the

00209 latching part 11 can, based on the axis of rotation 10, a latching

00210 arm 23 and an actuating arm 24 can be distinguished. The driving part 5 is arranged eccentrically, the

00212 means to the side of the axis of rotation 10 of the locking part 1 (on

00213 the actuating arm 24). 00214

00215 With reference to FIG. 6 it can be seen that the locking part

00216 11 has a latching lug 12, which in a latching

00217 take 13 of a rotationally fixed with the mounting pin 9th

00218 trained receiving part 14 is receivable. Further

00219 is the locking part 11 on the horizontally aligned

00220 axis 10 stored in the fork 15. Transferred to the

00221 latch 12 towards, with regard to the horizontal bearing

00222 axis 10, is a spring preload between the fork

00223 15 and the locking part 11 are provided. This spring preload

00224 voltage accordingly ensures that the locking part 11th

00225 is always biased into its locked position. Far

00226 ren is on this part of the locking part also the entrainment

00227 part attached. It's about an eccentric axis,

00228 by which it can be rotated relative to the latching part

00229 attached to the locking part. The driver part has one

00230 outer fully toothed surface. 00231

00232 In detail, the compression spring 16 acts between

00233 a fork cover 17 spanning the impeller 4 and

00234 a leg 18 of the total with respect to the ^' in Fig. 6

00235 shown vertical section U-shaped

00236 locking part 11. The direction of action of the spring 16 is

00237 here with respect to the horizontal axis 10, with which

00238 rather the locking part 11 is mounted on the fork 15, too

00239 the mounting pin 9 arranged offset. WEI

00240 ter is, as can also be seen from the drawing, the

00241 opening the U-structure towards the locking pin 9

00242 tet. 00243

00244 On the same U-leg 18 of the U-shaped latching part 11

00245 the driving part 5 is also attached. The take-away 00246 part 5 is a total of disc or roller-shaped

00247 configuration by means of an axis 19 on the locking part 11

00248 attached. While the axis 19 with the driving part 5

00249 is firmly connected, it is in the locking part 11 and the

00250 leg 18 of the locking part 11 rotatably received.

00251 Next, the axis 19 is with respect to a center point M

00252 of the driving part 5 arranged externally. An outer

00253 surface of the locking part 5 is fully toothed or

00254 knurled (see also FIG. 2 and

00255 4). 00256

In Fig. 7, the locking part 11 is at a compared to Fig.

00258 6 reverse direction of rotation of the impeller 4 shown.

00259 The respective direction of rotation of the impeller 4 is in the

00260 FIGS. 6 and 7 each identified by the arrow representation

00261 draws. In this position of the locking part 11 can

00262 the impeller is also fixed about axis 8

00263 den - mounting pin 9 according to the suggestion

Turn 00264 of arrow P. Because with such a twist

00265 the fork 15 with the impeller 4 around the fastening

00266 fen 9 even when a rotary

00267 direction reversal of the impeller 4, the locking part 11 or the

00268 locking lug 12 not on an assigned locking recess

00269 13 hits, the pivoting mobility of the fork 15 remains

Obtain 00270 with the impeller 4 until a

00271 further rotation of the fork 15 relative to the fastening

00272 supply pin 9 an alignment of the locking lug 12 with the

00273 fastening recess 13 occurs. The previous position

00274 development of the entrainment part is shown in weaker lines

00275 given. It can be seen that the entrainment part around the

00276 axis, via which it is attached to the locking part,

00277 is pivoted. Since the swivel path is limited,

00278 loaned through the step selected on the locking part

00279 the locking part around its horizon-

00280 tale pivot axis and against the spring 00281 biased into the release position. Since the take-away

00282 is only pivotable, but not rotatable, works

00283 it grinding together with the impeller. 00284

00285 In FIG. 7, the previous position of the driver

00286 meteiles reproduced in weaker lines. About that

00287 can also be seen that the driving part 5 between

00288 the two positions by a pivoting angle alpha

00289 is pivotable, which in the exemplary embodiment is approx.

00290 is 45 degrees. In both positions of the driving part 5

00291 the driving part 5 is otherwise in a grinding contact

00292 clocks to the surface of the impeller 4. The swivel path

00293 is ultimately also formed by the

00294 te level 20 limited. The restriction can also

00295 by the rotational mobility of the axis 19 in the locking

00296 part 11 can be given. 00297

00298 By the movement of the driving part 5 with changing

00299 direction of rotation of the impeller 4 is accordingly the locking

00300 part 11 moved like a seesaw. Because of axis 10

00301 given circular movement of the locking lug 12 about the axis 10

00302 is used to remove the locking lug 12 from the top

00303 Unscrew the recess 13, the here in

00304 horizontal direction achievable path s for decoupling

00305 is used by the recess 13. In the same

00306 way is in the opposite direction of rotation of the impeller 4th

00307 the locking lug 12 as it were from above into the locking recess

00308 and 13 screwed in. 00309

00310 The locking part 11 with the driving part 5 of the previously

00311 written embodiment is in Fig. 8 in perspective

00312 vischer representation reproduced. It is an exceptional

00313 ung 21 to be recognized in the legs 18 of the locking part 11

00314 NEN, in which the spring 16 can find a receptacle.

00315 It can also be seen that the locking part 11th 00316 with respect to a longitudinal center plane E essentially

00317 is symmetrical, with on the lower leg

00318 kel 18 stages 20 are provided on both sides, via which

00319 before the leg 18 in the mounting section for

00320 the driving parts 5, which are also provided on both sides

00321 are tapered. 00322

00323 in Fig. 9 is another perspective

00324 embodiment shown. It is essentially

00325 built the same, with the difference that none

00326 spring preload between the fork and the locking part 11

00327 is provided. The upper U-leg is also total

00328 narrower and has only the pulp throughout

00329 te, which corresponds to the locking lug 12. 00330

00331 In FIGS. 10 to 13, the locking part 11 according to FIG.

00332 9 installed in a roller 3 shown. It's closed

00333 recognize that there are essentially the same relationships

00334 result as already above with regard to the first

00335 embodiment described. By a shortened design

To be able to reach 00336 is also here in the ceiling 17

00337 fork 15 formed a slot 22. The shortened construction

00338 form also allows a smaller tilt angle of the

00339 locking part 11. Since here, since no spring is provided,

00340 in the pivoted position of the locking part 11 with respect

00341 of the locking recess 13, a contact pressure of the locking lug 12

00342 on the part 14 is to be taken up by the impeller 4,

00343 also affects a reduced swivel angle

00344 kel or a smaller swivel path advantageous.

00345 It is not absolutely necessary to put the spring between

To provide 00346 the fork and the locking part. The execution

00347 form of Figures 10 to 12 or Figure 9 is one

00348 those in which a corresponding spring is not provided

00349 is seen. Otherwise, the function corresponds to the

00350 standing explained function. 14 and 15 is, in a somewhat schematic representation,

00352 position, another embodiment shown. 00353

00354 The locking part 11 can be rotated here via the axis 10,

00355 but otherwise fixed with the mounting pin

00356 9 connected. 15 can in the release position

00357 the impeller 4 together with the fork 15 therefore

Turn 00358 relative to the locking part 11. 00359

00360 The locking part 11 in this embodiment is

00361 velvet, including the drive arm 22, inside

00362 the fork 15 added. The locking part 11 is located

00363 above the impeller 4, but laterally offset

00364 a vertical plane through the axis 7 of the impeller 4

00365 and below or with respect to the detent of the detent

00366 part 11 laterally to a lower end of the assembly pin

00367 fens. 00368

00369 The driving part is here specifically as driving arm 22

00370 trained. The drive arm 22 is relative to that

00371 locking part 11, which is a locking arm 23 and

00372 has an actuating arm 24 around the axis 19

00373 swiveling. It is not necessary to make a concrete

00374 th axis. For example, it could

00375 achieved the function via a flexible connection

00376. 00377

00378 Furthermore, as shown in FIG.

00379 represents that in the detent position in which the detent

00380 se 12 in the recess 15 formed in the fork

00381 is engaged 25, the driving arm 22 with respect

00382 a tangent T in the contact point P between the

00383 driving arm 22 and the impeller 4 an obtuse angle

00384 includes beta. This is a very good take-along

00385 and pivoting of the driving arm 22 when rotating 00386 hung the running direction of the impeller 4 ensured.

00387 As with the exemplary embodiments described above

00388 len changes the direction of rotation of the

00389 of 4 to pivot the locking part 11 to the

00390 pivot axis 10, such that the latch 12 under

00391 high power transmission out of the recess 25

00392 is pulled and lowered first until a

00393 pivoting of the driving arm 22 in the position according to

00394 FIG. 15 has taken place, the locking lug 12 being

00395 to approach the rest position a little without

00396 to achieve this. The support arm requirement

00397 22 on the impeller 4 at the contact point P or P '

00398 is in the embodiment by a between

00399 mounting pin 9 and the locking part 11 acting spring

00400 26 reached. 00401

00402 In both positions of the driving arm 22, the contact

00403 point P or P 'in an increasing or decreasing

00404 end of the impeller 4, clearly in front of the vertical

00405 calf V. 00406

00407 When the impeller 4 is rotated with the fork 15

00408 relative to the mounting pin 9 describes the

00409 driving arm 22 relative to the impeller 4 accordingly -

00410 in a projection - a circular path. 00411

00412 All disclosed features are essential to the invention. In

00413 the disclosure of the application is hereby also

00414 disclosure content of the associated / attached priori

00415 full documents (copy of pre-registration)

00416 was included, also for the purpose of characteristics of this

00417 documents in claims of the present application with

00418 to record.

Claims

004 19 A n s r u c h e 00420

00421 1st roller (3), with an impeller (4), a fastening

00422 spigot (9) and a fork (15), which fork (15)

00423 on the fastening pin (9) about a vertical axis

00424 (8) is rotatably mounted, with a locking part (11),

00425 the latching part (11) being releasable with a latching recess

00426 ung (13.25) cooperates and the locking part (11) by one

00427 rotatably mounted essentially horizontal axis (10)

00428 is for adjustment between a locking position and

00429 a release position, which adjustment by a

00430 Change of running direction of the roller (4) can be reached

00431, wherein the locking part (11) one on one

00432 first side of the axis (10) arranged locking arm (23)

00433 and a second one, on the other side of the axis (10)

00434 arranged actuating arm (24), thereby

00435 characterized in that on the actuating arm (24) cooperating with 00436 the impeller (4), relative to the actuating

00437 low-movement (24) pivotable driving part (5.2)

00438 is formed. 00439

00440 2. swivel castor according to claim 1 or in particular according thereto,

00441 characterized in that the driving arm (22) or

00442 the driving part (5) between two positions' stop 00443 is pivotable to a limited extent.

00444

00445 3. swivel castor according to one or more of the preceding

00446 the claims or in particular according thereto, characterized

00447 shows that the driving arm (22) or the driving

00448 part (5) in one of the locking positions of the locking arm (23)

00449 corresponding position with a tangent (T) to the

00450 impeller (4) encloses an obtuse angle beta. 00451

00452 4. Swivel castor according to one or more of the preceding

00453 the claims or in particular according thereto, characterized 00454 shows that the locking part (11) rotatably on the fastening

00455 guide pin (9) is attached. 00456

00457 5. Swivel castor according to one or more of the preceding

00458 the claims or in particular according thereto, thereby

00459 records that the locking recess (25) on a relative

00460 to the fastening pin (9) rotatable part

00461 det. 00462

00463 6. swivel castor according to one or more of the preceding

00464 the claims or in particular according thereto, characterized

00465 shows that the locking recess (25) in the fork (15)

00466 is formed. 00467

00468 7. Swivel castor according to one or more of the preceding

00469 the claims or in particular according thereto, characterized

00470 shows that the locking part (11) with the impeller (4)

00471 via an eccentrically mounted on the locking part (11)

00472 driving part (5) cooperates. 00473

00474 8. swivel castor according to claim 1 or in particular according thereto,

00475 characterized in that the driving part (5) covers

00476 loaned the locking part (11) is only pivotable. 00477

00478 9. Swivel castor according to one or more of the preceding

00479 the claims or in particular according thereto, characterized

00480 records that the driving part (5) is a knurled or

00481 has a toothed surface. 00482

00483 10. Swivel castor according to one or more of the preceding

00484 the claims or in particular according thereto, characterized

00485 shows that the locking part (11) in a locking position

00486 is spring loaded. 00487 00488 11. Swivel castor according to one or more of the preceding

00489 the claims or in particular according thereto, characterized

00490 shows that the spring (16) with respect to the axis (19),

00491 via which the locking part (11) is loaded in the fork (15)

00492 gert, on the side of the axis (10) on which the

00493 driver part (5) is arranged, acts. 00494

00495 12. Swivel castor according to one or more of the preceding

00496 the claims or in particular according thereto, characterized

00497 records that the locking part (11) can be triggered with a

00498 with respect to the fork (15), on the fastening

00499 lug pin (9) formed recess

00500 acts and the locking part (11) in the fork (15) rotatable

00501 is stored.