EP0767619A1

EP0767619A1 - Hand-towel dispenser for roller hand-towels

Info

Publication number: EP0767619A1
Application number: EP95924913A
Authority: EP
Inventors: Ralph Schön
Original assignee: Erich Schumm GmbH and Co KG
Current assignee: Erich Schumm GmbH and Co KG
Priority date: 1994-06-28
Filing date: 1995-06-22
Publication date: 1997-04-16
Anticipated expiration: 2015-06-22
Also published as: US5820231A; EP0767619B1; WO1996000516A1; DE59502425D1; ATE166774T1; AU2923895A; DE4422182A1

Abstract

PCT No. PCT/EP95/02438 Sec. 371 Date Dec. 19, 1996 Sec. 102(e) Date Dec. 19, 1996 PCT Filed Jun. 22, 1995 PCT Pub. No. WO96/00516 PCT Pub. Date Jan. 11, 1996In a dispenser (1) a dispensing mechanism (18) and a take-up mechanism (19) are arranged on a single side of a removable unit (20) so that an energy storage driven by dispensing is also not discharged even when the cabinet is opened, that the take-up can also be set in motion even when the full, predetermined dispensing length has not been dispensed, that take-up is possible both with and without timing control or the dispensing length can be limited and that a precisely limited return of the toweling loop, opposing the take-up, is possible at the soiled side, as a result of which highly versatile functions materialize for a compact configuration.

Description

description

Towel dispenser for roll towels

The invention relates to a towel dispenser, in particular for drying the hands.

With the towel dispenser, there is a need to catch up or shorten the exposed loop or the like, which connects the clean part with the used part of the towel rail and can be retracted in steps, and thereby prepare it for being extended a fresh piece of towel can be removed from the loop. The loop can hang down tension-free for a predetermined time after pulling off or can always be under the tension of a pull-in force, so that it is drawn in immediately by the operator after being released.

The invention is based on the object of creating a towel dispenser which avoids disadvantages of known designs and which in particular offers the possibility of ensuring effective retraction in many of its different operating states or of allowing easy handling.

According to the invention, the towel web can be dispensed from a cleaner and, depending on this, be transferred to one or more used stores, the towel dispenser expediently operating a towel retraction, a loop retraction and / or an energy store whose stored energy is used for this purpose Towel loop, for example after a timer has expired, pull tightly towards the dispenser or a used part of the towel loop in to take over the final used memory. The expiry of the timer can begin during or after the clean towel part has been delivered to the loop.

The energy store is advantageously charged manually or by pulling off the towel web in such a way that, regardless of the operating state of the dispenser, it always contains enough energy to pull in the loop or to transfer the last free end of the towel web completely into the housing. Such an operating state can also be the one which is provided for removing the used towel sheet or for inserting a fresh towel sheet or it can be the one which results when the last end of the clean towel sheet is completely drawn in or transferred to the used storage device , namely e.g. is wound up. The energy store is expediently charged each time a towel is dispensed in such a way that the energy stored thereby is sufficient to draw in a length of towel which is at least 10% greater than the length of towel given immediately before.

In order to thereby overload the energy store, e.g. To avoid a mechanical spring accumulator with a tension-loaded spring, an overvoltage protection is expediently provided. In the case of a spiral spring, at least one end can only be fixed by friction, so that when it is loaded, it is moved relative to the drive or output transmission element connected to it, and so further tensioning of the spring is no longer possible, but the maximum possible spring tension is retained.

In order to avoid drawing in or to preserve the stored energy or in corresponding operating states, the energy store or the drawing-in mechanism is expediently counteracted Delivery of energy blocked. If, for example, the retracting mechanism is not under the holding action by the towel rail, a corresponding blockage appropriately engages. For this purpose, a sensing or interrogation element can be provided, which detects the presence of the towel web in front of the used storage device or a drivable feed roller in a passage nip or after the entry point of the associated loop leg into the dispenser and engages the blockage in the absence of it. However, the sensing element can also mechanically detect the operating state of the dispenser, namely, for example, whether the two gap limits in the use position are close together or are separated from one another, for example for the towel web to be exchangeable, in which case blocking is also provided here. As a result, the energy store is not discharged either when the towel web is completely drawn in or when the dispenser is open, so that after a fresh towel web has been inserted, sufficient drive energy is still available to catch up with the free end of the towel web after sufficient fixing relative to the feed without having to do so. or multiple lengths of web have to be withdrawn from the cleaner memory in order to charge the energy store ready for operation.

The blocking means are expediently provided separately from blocking means, which are released by the timing element in such a way that the retraction mechanism is started. However, both agents can be on the same runner, e.g. act a blade rotor braked by air resistance, which is driven by a multi-stage gear transmission from the energy store at a much higher running speed than this.

In order to limit the length of withdrawal of the towel web from the clean and / or used storage per delivery cycle, limiting means are expediently provided, which are advantageous act positively by a stop and are engaged either by an actuator of the time control or by a separate control element that moves with the trigger. As a result, the dispenser can easily be switched from time control to delay-free control and vice versa, or the timer can be arranged or omitted without the limiting effect being influenced thereby. A blocking element which causes the blocking and is movable between an engagement position and a disengagement position expediently has separate cams on the one hand for actuation by a switching element of the

Timing element and on the other hand for actuation by the control element, e.g. a roller, the second cam can also directly form the stop. The forward blocking element is expediently positively controlled to the engagement or stop position, while it is transferred to the disengagement position by a force, in particular only by its weight, when the corresponding cam is released.

The functions mentioned generally require the execution of a predetermined, stroke-limited trigger travel of the control element or the like, namely that a relatively precisely predetermined length of the towel web is deducted. If the actual actuating path is smaller than the mentioned trigger actuating path, a cam engaging the timing element or the blocking element can remain in the area of the associated cam rotor instead of overflowing it and thus prevent this element from disengaging. This would prevent the feed from being started or prevent further withdrawal. In order to avoid this, disengagement means are provided which also enable the said link to be reset or disengaged when the cam rotor is in engagement with or in the path of the control cam. The cam rotor is positively locked in its working position, but can be unlocked by moving transversely to its control movement, this unlocking taking place automatically by the control cam being reset a small distance against its working direction at the end of its travel path by tension forces in the retraction mechanism and thereby frictionally entraining the cam follower into its unlocking position, in which it can be moved away from the cam with respect to the switching element against spring force. The switching element or the blocking element can then be disengaged despite the cam rotor resting on the cam. As soon as the cam is moved away from the cam rotor again, it is automatically moved into its working position by spring force and locked therein. Said resetting or unlocking can be driven in a simple manner by the energy store or its drive member if the latter is drive-connected to the control member for charging the energy store and to the cam rotor via the cam. In order to positively limit the reset path, a freewheel lock is provided which, for example, releases the required reset path by bearing play of a return lock element.

It is particularly advantageous if the clean room is at least partially to substantially completely above the used or dirty room and the clean room extends approximately to the top or the dirty room approximately to the bottom of the dispenser housing. As a result, all the essential mechanical or movable functional parts of both the trigger mechanism and the retraction mechanism and their connection can be provided in the deepest area of the dispenser or below the clean room. Furthermore, the clean room or the towel web lying therein can hardly be contaminated from the dirty room. A partition between the two rooms further improves this effect. Advantageous this partition takes up the weight of the stored clean towel part, whereby it is loaded against this weight by a spring or the like so that it increases the weight of the SauberSpeicher essentially continuously and thus for the increase or increase of the Used memory creates space. As a result, the total height of the dispenser can be selected to be significantly smaller than the sum of the maximum height of the two rooms. The towel sheet can be guided from the clean store to the loop essentially completely shielded from the dirt or used space in a slot shaft, so that this part of the towel sheet is not contaminated.

For easy maintenance of the dispenser or for exchanging the towel rail, the respective room is to be opened almost completely over its full view, approximately over its entire height or on its side facing away from the other room and on the front, in particular without Housing parts must be removed completely. The storage of the housing or closure parts movable for this purpose is advantageously provided on the one hand in the foremost and lowermost area of the dispenser or on the other hand in the uppermost and rearmost area, two in the lower area and in the foremost third or fourth of the dispenser superposed pivot axes can be provided on the one hand for shielding and on the other hand for a single bottom flap. As a result, the winding shaft for the used storage device can be inserted into the dispenser from bottom to top after being connected to the foremost towel end, forming the loop, and can be removed from the front of the dispenser after the used towel web has been completely wound up.

The towel pull-in can wind up the used towel web directly or loosely unwound in a double Store the memory and only then wind it up depending on the next deduction. In the first case, the feed roller driven by the energy store drives the use roller directly on its outer circumference, while in the second case the feed roller is provided separately from a drive roller for the use roller. The buffer is advantageously provided on the bottom of the dispenser so that it is surrounded by the towel loop. The towel web can dry in the intermediate store, in particular if the associated receiving space is ventilated by convection or the like through openings opposite to one another in its superimposed and / or lateral walls.

In addition to the claims, these and further features also emerge from the description and the drawings, the individual features being implemented individually and individually or in the form of subcombinations in an embodiment of the invention and in other fields and being advantageous as well as representable protective designs for which protection is claimed here. An embodiment of the invention is shown in the drawings and is explained in more detail below. The drawings show:

1 is a front view of a towel dispenser according to the invention,

Fig. 2 shows a vertical section through the dispenser

Fig. 1

3 shows the dispenser according to FIG. 2, but in the open state, 4 shows the dispenser according to FIG. 1, but in a section approximately parallel to its front,

5 shows the operating mechanics of the dispenser in a view from the right according to FIG. 4 and in an idle state and

Fig. 6 shows the operating mechanism according to FIG. 5, but in the state at the end of the trigger.

The dispenser 1 has a base body 2 and a cover 6, which together form an essentially closed housing with walls which lie on the outside of the dispenser. Of these, the rear wall 3 and the side walls 4, 5 are essentially formed only by the one-piece base body 2, the top wall 7 and the front wall 8 essentially only by the one-piece cover 6 and the bottom wall 9 essentially only by a further one-piece cover. From the

In the closed position, the cover 6 can be pivoted upward by approximately 90 °, so that the cover wall 7 lies approximately in the plane of the rear wall 3. The cover 9, on the other hand, is to be pivoted downward by about 90 °, both covers also being easily detachably attached to their pivot bearings so that they can be completely removed from the base body 2. The dispenser 1 is used for storing, dispensing and receiving a towel web 10, indicated by dashed lines in FIG. 2.

The upper part of the housing delimits a clean room 11 adjoining the top wall 7 and the area directly adjoining downwards extends to a utility room 12 which extends to the bottom wall 9. In the clean room 11, a clean roll 13 of coiled clean towel is arranged, downward out of the housing and then back up into the housing, where it is placed on a used roll 14. is wound, which is always at a distance above the bottom wall 9 and at a distance below the roller 13. The rollers 13, 14 can be displaced in the vertical direction during operation and are automatically lifted with decreasing roller 13 or simultaneously increasing roller 14, for example in accordance with their change in diameter, and are displaced transversely in the opposite direction.

The outer circumference of the cleaning roller 13 lies in a trough-shaped carrier 15, on the bottom wall of which it rotates smoothly when it is pulled off and in which it is kept centered by the sliding engagement. The web 10 is pulled up from the front of the roll 13 and then deflected downward in the uppermost housing area along the inside of the front wall 8. A front wall part of the carrier 15 adjoining the floor is approximately parallel to the front wall 8 at its lowest position and adjoins at the bottom approximately to the upper end of a partition 16, which is also approximately parallel to the front wall 8 or lies vertically. As a result, a shaft for guiding the web 10, which is closed off from the rooms 11, 12, is formed from the upper deflection approximately to the floor.

In the lowermost area of the housing, the towel web 10 actuates a pull-off mechanism 18 during the pull-off, which serves to drive a pull-in mechanism 19, through which the used web 10 is wound onto a winding shaft 17 to form a roll 14. The shaft 17 is displaceable in the vertical direction and rotatably mounted. Both mechanisms 18, 19 are provided on a unit 20 which is separate from the housing and can be removed from it in a non-destructive manner, with its movable functional members lying on only one side of the housing or unit 20 apart from those which serve to guide the web 10 and between the associated side wall and the adjacent side wall 5. This also applies to an energy Memory 21, which essentially drives all the control feed movements, so that the dispenser does not require any electrical drive. After the withdrawal, a timer 22 is engaged, which disengages again after a predetermined time and thereby releases the withdrawal.

In the lowermost housing area and below the lowest position of the shaft 17, the web 10 to be drawn is moved backward by approximately 90 ° by a pull-off shaft 23, then by approximately 180 ° forward by a counter shaft 24 and finally by a deflection again by approximately 90 ° 25 deflected downward, which forms the rear boundary of a slot-shaped pull-out opening 26 of the shaft. The front boundary is formed by the lower end of the front wall 8. The front leg of the towel utility loop runs downward from the opening 26. The ends of the counter-rotating shaft 24, which rests freely on the circumference of the trigger shaft 23 and is supported by tension, are mounted on two inwardly projecting bearing cheeks of the front wall 8 or the cover 6, so that the opening thereof is lifted off the trigger shaft 23. The inner ends of the bearing cheeks can simultaneously form locking members for locking the cover 6 through the bottom wall 9 in the closed position.

In the retracted state, the top of the useful loop rests with tension on the underside of a loop system 27, which is formed by a downward projection of the bottom 9 and is narrower than the web 10, so that it is on the underside of the dispenser 1 from Hand can be easily gripped on the side and pulled down. The rear loop leg is led back into the housing through a pull-in opening 28 adjoining the rear wall 3 and immediately adjacent to this opening 28 the web 10 passes through a feeler 30 which detects the presence of the web 10 in its passage gap. For this there is a comb-like sensor 29 on the upper side of the towel web, which in turn slides with the other or lower side approximately horizontally on a counter member 31 which has engagement openings closely matched to the comb teeth of the sensor 29. If there is no web 10, the sensor 29 is released, its comb teeth are moved downward into the openings by an actuating force, for example a spring, and a control process is derived therefrom, for example the blocking of the feed mechanism 19, of the energy store 21 or the like ..

The same effect is obtained if the base 9 is moved with the counter member 31 away from the sensor 29, namely is pivoted downwards, in order to open the entire underside of the housing and the unit 20. The bottom 9 and the partition 16 can be mounted on the base body 2 or on the unit 20. The pivot axis of the base 9 expediently coincides approximately with the axis of the deflection 25, which is also arranged on the unit 20. When the cover 6 is open, the partition 16 can be pivoted forwards and obliquely downwards about an axis which coincides approximately with that of the trigger shaft 23. In the obliquely downward opening position, the partition 16 can be secured in position by resting on the projection 27 of the freely hanging floor 9. In its working position, the partition 16 is expediently secured by a resilient catch.

After inserting the roller 13 into the non-destructively removable support 15, the web 10 is guided with the partition 16 in the working position, but with the covers 6, 9 open, over the upper deflection downwards and around the cover 9, after which it moves with it The free end of the winding shaft 17 is inserted from the bottom upwards into the lower housing opening and into the bearing for the winding shaft 17 is used from top to bottom. The lids 6, 9 can then be closed one after the other. The rear edge of the cover 9 forms a deflection of more than 90 ° leading to the sensing device 30 for the web 10 or the associated slot limitation of the opening 28, so that the web 10 is raised against the sensor 29 when the lid 9 is closed. When the cover 6 is closed, the countershaft 24 is brought into engagement with the trigger shaft 23 from the front to the rear, and because of its pivoting path it engages in the trigger shaft 23 initially with a higher radial tension and, when its working position is reached, with a lower radial tension, so that a locking position fuse results. Immediately after the feeler device 30 located immediately adjacent to the opening 28, the web 10 is guided upward by approximately 90 ° around a motor-driven feed roller 32, the outer circumference of which rests frictionally against the outer circumference under the weight of the roller 14 , so that their rotational movement is transferred to the roller 14. By closing the cover 9, the feeler 29 is raised or actuated, thereby setting the feed roller 32 in motion, so that the roller 14 is rotated until the useful loop is tensioned.

The trigger mechanism 18 has a runner or a wheel 33 which lies directly above the trigger shaft 23 and is driven directly by the latter without slippage via a single gear stage 34, which in turn drives an elevator wheel 36 in a slip-free manner via a single-stage belt drive 35, which gear wheel drives again Energy store 21 lies approximately in the axis of the feed roller 32 and carries the radially inner end of the spiral spring of the energy store 21, so that the spring can be wound up via this two-stage gear connection. The other or outer end of the storage spring is fixed relative to a rotor or spring housing, which is connected in a rotationally fixed manner to the feed roller 32, in such a way that when one is exceeded Limit torque slips relative to the rotor. This rotor is drive-connected via a freewheel with a driven wheel 37 which is considerably larger than the upgrade 36 and which is carried along when the roller 32 is pulled in, but not when rotating in opposite directions. The energy store 21 lies axially between the wheels 36, 37, the freewheel axially or at the end face between the store 21 and the wheel 37 and the wheel 36, like the belt drive 35 and the wheel 33, is closest to the side wall 5. The wheel 37 drives Via a multi-stage spur gear 38, namely an idler gear and three gear ratio stages, a rotor or a brake wheel 39. The gear 38 is essentially above and behind the axis of the rotor 21, 32, 36, 37 and the axis of the Bre srades 39 is approximately vertically above this axis, so that it is provided in the uppermost region of the unit 20, while the runners 21, 32, 36, 37 are in the lowest region of the unit 20 and the wheel 33 is approximately in the middle of its height.

In order to be able to stop the pull-in mechanism 19 regardless of the tension or the presence of the towel rail, at least one blocking device 40 is provided. A brake lever 41 protrudes upward from the pivot shaft of the sensor 29, which is approximately in height and behind the axis of the runners 21, 32, 36, 37 and is located directly adjacent to the rear wall 3 and carries a friction brake member 42 at its upper end is rotatably connected to the sensor 29. The sensor 29 protrudes obliquely downwards and forwards from its pivot shaft and in the operating position, namely when the web 10 is present in the sensing device 30, the lever 41 projects approximately vertically upward, so that the brake member 42 is lifted off the outer circumference of the brake wheel 39 . As soon as the sensor 29 is released, the brake lever 41 pivots under spring force against the brake wheel 39, which is fixed by the brake member 42, so that over the gear 38 also the rotor 37 and, via the freewheel, the rotor of the energy store 21 can be fixed against its relaxation.

The control wheel 33 acts on a movable actuating or switching element, namely a control lever 43, which projects freely upwards from its lower pivot axis, extends over most of the height of the unit 20 and between the axes of the runners 23, 33 on the one hand and the Runner 21, 32, 36, 37, 39 and the gear 38 on the other hand. At the upper free end, the lever 43 carries a suction cup 44 of the timing element 22, which is opposite a suction cup fixedly mounted on the base body or the unit 20 such that the suction cups stand upright when the lever 43 is pivoted backwards standing cup edges come into pressure-tight engagement. Air is pressed out of the then closed bowl space by the control movement of the lever 43 and the bowl space can suck in air again via a throttle opening under the spring action of the suction cups or a return spring engaging the lever 43 until the suction cup 44 is released and the Spring resets the lever 43 to its initial or return position.

Approximately in the middle between the actuator 22 and the swiveling axis, a control cam 45 of the disk or wheel 33, which rises flatly over an arc angle of approximately 180 °, engages the lever 43 in such a way that the lever 43 each time the wheel 33 rotates is once transferred into engagement of the timer 22. The circumferential cam 45 presses against a cam rotor 46, which is mounted in the direction of this pressure transversely with respect to the lever 43 from its working position according to FIG. 6 to a disengaging position according to FIG. 5. Close to the timer 22 between the latter and the cam follower 46, the lever 43 bears on a The directional pivoting lever is a friction brake member 47 which resiliently rests on the side of the outer circumference of the brake wheel 39 facing away from the brake member 42 when the timing member 22 is engaged and then acts as described with reference to the brake member 42. With the timing element 22, the brake element 47 also disengages and the useful loop is pulled in.

In order to withdraw the web 10 from the clean store 13, e.g. A limitation device 50 is provided to limit the number of revolutions of the take-off roller 23, but only one revolution of the wheel 33, and thereby to a predetermined take-off length, which acts on one of the rotors, in particular the wheel 33. On the base body of the unit 20, which is composed of side walls and cross members and has no walls transversely to the side walls, a locking member 48 can be moved in a height-limited manner, in particular linearly displaceably, which is essentially above the wheel 33 in front of the end of the lever 43 lies and carries a stop 49 for the wheel 33 at the lower end. This has a cam 51 on the end face as a counter-stop which, when the locking member 48 is engaged in the upper end position, runs against the stop 49 during the pull-off, thereby positively blocking further pull-off and also the elevator drive for the energy store 21.

To engage the stop 49, a cam control is provided between the lever 43 and the locking member 48. The lever 43 has on the front of its free end approximately at the level of the articulation of the brake member 47, a control cam 52, on which a cam runner 53 fixed to the locking member 48 is guided. When the timing element 22 engages, the stop 49 is moved into its stop position by the cam follower 53. When the timer 22 is released and the lever 43, which can also be moved in a stop-limited manner, returns the cam follower 53 is released again and the stop 49 falls down into its disengaged position under the weight of the locking member 48. The limitation thus occurs in that the lever 43 is engaged via the cam control 45, 46 and in turn engages the stop 49.

The limit 50 also works when the timer 22 or the lever 43 is not provided. For this purpose, the wheel 33 carries, in a plane offset from the cam 45 and this cam 45 approximately diametrically opposite, a further control cam 54, which rises more steeply than the cam 45 and in the path of which a cam runner, e.g. a running surface of the stop 49 lying transversely to the stop surface. With each rotation of the wheel 33, its control cam 54 can therefore immediately move the locking member 48 into its engagement position immediately before the cam 51 strikes.

So that the energy store 21, for example in the absence of a towel 10, is not relaxed via a return of the extraction mechanism 18, a backstop 55 is provided which expediently acts directly on the wheel 33 or its outer circumference. The lock 55 has a locking member movably or pivotably mounted above the wheel 33 in a bearing 56, such as a locking lever 57 projecting obliquely back and down from the bearing 56, the free end of which acts as a locking pawl which engages in a locking toothing in the manner of a freewheel is formed. The locking member 57 is located between the locking member 48 and the outside of the associated bearing cheek. To lock the lever 57 is loaded by an actuating force, in particular only by weight. This pawl has a small movement play in the return direction, which can be provided, for example, as a linear radial play in the bearing 56. During the withdrawal rotation of the wheel 33, the locking lever 57 to the associated end of this movement play limited stroke by its friction against the locking surfaces or the locking teeth. When the withdrawal is complete and the towel web is released from the manual tension, the energy store 21 drives the wheel 33 in the return direction via the wheel 36, which takes the engaged locking lever 57 to the other end of the movement play and only then does the locking occur .

The cam rotor 46 is in its working position with a lock 61, e.g. a bolt nose 62 lying directly behind its tread is secured, which engages behind a bolt shoulder of the lever 43. In this position, the elongated pin-shaped cam follower 46 or the latch 62 can be moved transversely to its working movement, namely transversely to its longitudinal direction with respect to the lever 43, in a direction corresponding to the return direction of the wheel 33 or the cam 45 Direction. As a result of this return movement, the latch 62 is released and the cam rotor 46 can be linearly transferred to a rest position in the sense of lifting off the cam 45 relative to the lever 43.

If the wheel 33 has not carried out a complete trigger rotation until the cam 51 stops and the cam 45 therefore remains under pressure against the cam rotor 46, the small return path mentioned causes the cam 45 to engage the cam rotor 46 in a frictional manner. that this is unlocked immediately after the timer 22 and the brake member 47 have been engaged. If the timer 22 now disengages, the resetting of the lever 43 and the disengagement 47 is not hindered despite the cam 45 resting on the cam rotor 46, because in this case the cam rotor 46 can deflect against the spring force acting on it, namely against the Lever 43 in a storage pocket is moved backwards. If the control cam 45 is then rotated further and away from the cam follower 46 by pulling off further towel web 10, then this is released again and the spring pushes it into its working position, in which it falls under its weight so that the latch 62 engages again in the locking shoulder and thus the locking is restored.

Sufficient towel length is drawn in by the pull-in mechanism 19 in each case that it is expedient to also return a partial length of the drawn-in length to the useful loop during the subsequent pull-off, so that the towel web is used as completely as possible. In order to limit this pull-out of the drawn-in towel web, a retraction stop 58 is provided, which expediently acts directly on the rotor of the energy store 21 or the feed roller 32. For example, the retraction lock 58 can limit the pull-out to two or three revolutions of the feed roller 32, these rotations being counter to the feed rotation. The retraction lock 58 can operate in the manner of a Maltese drive and has a toothed cam 59 in the recess on the outer circumference of the rotor, which protrudes radially slightly further beyond the bottom of the recess than the remaining, continuously circular outer circumference of the rotor, which is interrupted only by the recess Chen is.

Between the lever 43 and the rotor, a disk-shaped control body 60 is rotatably mounted in the lowermost region of the unit 20, which has a number of engagement gaps 63 on the outer circumference in the manner of a Maltese cross, corresponding to the number of desired retraction revolutions, which are closely related the tooth 59 are adapted. Provided between adjacent gaps 63 are radially protruding retaining surfaces 64 forming peripheral surfaces, on which the continuous periphery slides, when the tooth 59 runs away from the control body 60 so that it is then secured against control movements. In the direction of its control movement, the control body 60 is loaded by a spring. 5 and 6 is rotated to the left in the retraction movement according to FIGS. 5 and 6, it releases the first holding cam 64 on its associated flank, the control body 60 rotates a little to the right under the spring force and then the peripheral surface of the The rotor into the holding surface 64 in such a way that a further rotation of the control body 60 is prevented until the tooth 59 passes through the next gap 63, releases this again with the mentioned effect and then the next holding surface 64 takes over the rotation protection.

The last gap 53 is followed by a blocking surface 65, against which the tooth 59 runs during the last or third return rotation, so that the return or feed roller 32 is positively locked against a further return rotation. At the next retraction, the tooth 59 switches the control body 60 step by step from gap to gap 63 back to the starting position in a correspondingly reverse manner. Is the

If the number of retraction rotations is greater than that of the retraction rotations, the control body 60 is secured in the manner described here by the peripheral surface of the rotor after reaching the starting position. The spring of the energy store 21 is also tensioned by the retraction rotation, so that simultaneous tensioning takes place both via the take-off roller 23 and via the feed roller 32.

The movable functional elements according to Figs. 5 and 6, e.g. the individual gear stages and cam controls are in different, directly adjacent to each other

Levels on the outside of the associated bearing cheek arranged that they can be accommodated in the smallest of spaces and cause only a very small widening of the housing compared to the width of the towel rail. The counter member 31 for the sensor 29 could also be formed by a roller, for example the feed roller, in particular if it is provided separately from a roller driving the roller 14. The bearing cheeks on the rear of the unit 20 have hook-shaped fastening members 66 such that the unit 20 can be removed from the base body 2 after the housing has been opened by only slightly lifting it forwards and can also be used in the opposite manner. The fastening members 66 engage in openings in the rear wall 3, on the outer side of which project projecting projections with which the dispenser is to be fastened against a wall. If the wound roll 14 is to be removed, it can be lifted upwards out of its connection with the unit 20, possibly with the carrier 15 being carried by the system, and removed forwards from the base body 2. It is also conceivable to first pull the towel web onto the roll 14 without winding it up and to store it temporarily in a separate room until this towel part is wound up with a time delay. During this time, this towel part can dry and be stored, for example, in the housing-shaped projection 27, which is then expediently approximately as wide as the web 10. This space can also be opened by opening the cover 9. Instead of being pivotable, the carrier 15 can also be mounted in an approximately linearly displaceable manner.

Claims

1. Towel dispenser for roll towels, characterized gekenn¬ characterized in that at least one towel rail (10) of at least one clean towel roll (13) can be pulled by hand and / or wound onto at least one used towel roll (14).

2. Towel dispenser according to claim 1, characterized gekenn¬ characterized in that at least one driven by the manual towel pull, a towel feeder and an energy storage device (21) enthal¬ th insertion mechanism (19) for pulling least a loose towel loop or the like. It is provided to the dispenser (1) that, in particular, a pull-in mechanism (19) actuates a towel loop after at least one timer (22) has expired, which is put into operation after removal, and that blocking means (40) for blocking an energy store (21 ) are provided at the end of the towel web (10) or when the dispenser is open, which are provided by at least one mechanical sensor (29) for the towel web (10), in particular a comb-like, if appropriate, engaging in at least one recess of a towel guide (31) Lever are actuated and preferably act on an air brake disc (39).

3. Towel dispenser according to claim 1 or 2, characterized gekenn¬ characterized in that a retraction mechanism (19) contains a multi-wheel gear (34, 35, 38), in which a spiral spring memory with overvoltage protection is switched on as Energiespei¬ cher (21), in particular an energy storage (21) in the axis of a feed roller (32) or an output-side part (38) of the transmission in the rear half of the dispenser (1) or immediately on the back thereof is then provided, and / or that a feed mechanism (19) from Towel pull-off for the towel pull-in preferably contains a ratio of at most 1: 2, by means of which an energy store (21) is drawn up for a greater pull-in length than corresponds to the length of the pulled-off towel, a reduction step (34) being followed in particular by a translation step (35) or one as a control, such as belt pulley (33) or the like. The drive wheel provided is drive-connected via a belt drive (35) to a shaft of an energy store (21).

Towel dispenser according to one of the preceding claims, characterized in that a pull-in mechanism (19) contains a locking device (47) actuated by a timer (22), which acts in particular on an air brake (39) connected to a pull-in mechanism (18, 19) or is on the side of an air brake (39) facing away from the blocking means (40), and / or that a pull-in mechanism (19) has limiting means (50) for the towel pull-off, which limit the towel pull-off to a predetermined length by means of a pull-off travel, and in particular have at least one cam control (45, 52, 54) and a control disc (33) which cooperate with a locking slide (48) which actuates a locking device (49, 51) for the towel pull-off and is movable into a pull-off locking position, a pivotable via a radially rising cam (45)

Actuating lever (43) held by the timing element (22), which may be designed as a sucker, or after the time has elapsed is released and the locking slide (48) is actuated via a cam curve (52).

5. Towel dispenser according to one of the preceding claims, characterized in that a control disc (33) or the like. Has a cam (54) which causes the engagement of a locking slide (48) not actuated by a timing element (22), in particular that Cam (45) for direct actuation of an actuating lever (43), a cam (54) for direct actuation of a blocking slide (48) or a cam (52) for actuating a blocking slide (48) by means of an actuating lever ( 43) is provided, and / or that, in a position corresponding to an incomplete trigger travel, an actuating lever (43) is in contact with a cam (45) via a cam rotor (46), which is actuated by a disengaging device when the cam (45) is stationary in its path of movement and by a slight reset movement of a mechanism (18, 19) against the pulling direction can be moved into a position releasing the movement of the actuating lever (43) Preferably, when the timer (22) is engaged, a short return of a control disk (33), which is driven by an energy store (21) and is limited by a stop, triggers an unlocking of a cam rotor (46).

6. Towel dispenser according to one of the preceding claims, characterized in that a control disc (33) or the like. A stop (51) for a locking slide disengaging by an actuating force (48), that an actuating lever (43) has a cam curve (54) for the locking slide (48), a holding member (44) of a timer (22), a braking member (47) for an energy store (21), a cam rotor actuated by the disk (33) (46) and / or a rotor of a locking mechanism (55) which releases the limited return movement of the disk (33) for an energy store (21), and that preferably a control disk (33) directly via a single-stage intermediate drive (34) from one

Driven roller (23) driven, a locking slide (48) arranged on the side of the disc (33) facing away from the intermediate drive (34), an actuating lever (43) opposite a connecting straight line between the intermediate drive (34) and the locking slide (48) transversely offset and / or a functional group consisting of disc (33), intermediate drive (34), locking slide (48) or actuating lever (43) laterally immediately adjacent to a functional group consisting of feed roller (32), air brake (39) or Blocking means (40, 47) for the energy store (21) is arranged.

7. Towel dispenser according to one of the preceding claims, characterized in that a space (11) for a Sau¬ ber towel roll (13) above a used towel roll (14) accommodating space (12) or by this by at least one Partition (15) is essentially closed, that in particular a pull-in mechanism (19) is arranged essentially completely underneath a clean room (11) or from the clean room (11) to an output opening (26) an essentially full length opening Shaft for the towel web (10) is provided, and that preferably a partition (15) is designed as a spring-loaded receiving trough for a clean towel roll (13), which is essentially displaceable in the vertical direction, and / or that a spring relief is designed so that the receptacle in accordance with the decreasing weight of the clean towel roll (13) in its height continuously increases automatically or a partition wall between the clean room (11) and the used room (12) which can be swiveled or shifted according to the roll size means that in particular the sum of height dimensions of a clean room (11) and a used room (12) is smaller than the sum the respective maximum roll diameter of clean and used towel rolls (13, 14), and that preferably a partition (15) with the increase in diameter of a used towel roll (14) towards the rear of the dispenser (1) increases.

8. Towel dispenser according to one of the preceding claims, characterized in that the guidance of the towel web (10) from a clean roller (13) to the towel pull-off (26) through between a used space (12) and a housing front cover (6) of the dispenser ( 1) lying intermediate wall (16) is divided, which is preferably pivotably mounted in the lower and foremost region of the dispenser (1) diagonally opposite a bearing of the cover (6), and / or that an outer housing of the dispenser (1) is closed off by at least one hinged housing front cover (6) on which a deflecting and pressing roller (24), which interacts with a towel removal roller (23) or engages in a roller gap, engages for a clean hand ¬ cloth sheet (10) is attached, and that in particular a front cover (6) is angular and immediately adjacent to the back of the dispenser on its top from the closed position according to whether en is pivoted.

9. Towel dispenser according to one of the preceding claims, characterized in that at least one floor Section (9) of the dispenser (1) together with a towel guide surface (31) can be moved into an open position, that in particular a bottom section (9) releases an insertion opening for a winding shaft (17) of a used towel roll (14) or in The foremost area of the dispenser (1) is pivotably mounted, and that a receiving space for unrolled used towel (10) is preferably formed in the bottom area of the dispenser (1), into which a retraction mechanism (19) promotes the towel length drawn in per cycle and / or that the feed roller (32) drives the used towel roll (14) directly, and that in particular a drying room is provided for ventilating a loosely stored longitudinal section of a used towel (10) before winding.

10. Towel dispenser according to one of the preceding claims, characterized in that a lower projection (27) of a bottom portion (9) of the dispenser (1) forms at least one system for a used towel loop, that in particular a laterally projecting section over a system For gripping a towel web, it is provided that preferably a pull-off and a pull-in mechanism (18, 19) are arranged essentially completely only on one side of the dispenser (1) or as a unit which can be removed from the housing of the dispenser (1) (20) are formed, on which in particular the bottom section (9) or the partition (16) is mounted, and / or that at least one retraction locking mechanism (58) is provided to limit a towel length to be deducted from a used towel roll (14) and that preferably a ratchet (58) has a locking member (60) which can be taken gradually by a feed roller (32) in opposite directions.