CA3182350A1 - Dispenser, more particularly sanitary dispenser and refill - Google Patents

Abstract

The invention relates to a dispenser, more particularly a sanitary dispenser for dispensing toilet paper or hand towel paper, for sections of a refill (2) with a material web (12) wound to form a roll, more particularly a paper dispenser, wherein the refill (2) has at lest one journal (15) which can be guided along a guide path (4) of the dispenser, said guide path extending substantially in a preferably vertical path plane, from an insertion position (9) to a dispensing position (10) in which the refill (2) is rotatably mounted, wherein the guide path (4) has, in at least one section, a guiding bridge (22, 22a, 22b) which is oriented substantially parallel to the path plane for engagement into a circumferential groove (25) of the journal (15), said circumferential groove being designed asymmetrically with respect to an axis of rotation (13), wherein a guiding bridge (22a) is provided in the region of the dispensing position (10), and the journal (15) is held there non-rotationally and in the axial direction.

Description

Dispenser, more particularly sanitary dispenser and refill The invention relates to a dispenser, in particular a sanitary dispenser for dispensing toilet paper or hand towel paper. Furthermore, the invention relates to a refill and a bearing unit for such a refill.
In the application, the following terms are used substantially as follows, without being limited thereto:
Dispenser: The dispenser is a preferably wall-mountable apparatus with a housing for receiving refills with a material web wound into a roll. On the inside, the dispenser typically has a guide path, which leads from an upper insertion position into a lower dispensing position. Journals protruding from the refill are guided in this guide path. In the dispensing position, the refill can rotate in order to unwind material and dispense it from the dispenser in portions.
Refill: By refill is meant a material web, in particular made of paper, wound into a roll.
Journals, via which the refill is rotatably mounted, protrude from the refill on both sides.
Journals: The journals protruding from the refill serve for the rotatable mounting of the refill in the dispenser.
Axle support: The axle support is connected to the material web wound into a roll on the one hand and supports the journals protruding beyond the roll on the other hand.
There are at least three types of axle support:
¨ An axle support which extends substantially through the roll of the refill.
Such an axle support is called a supporting rod.
¨ Two separate axle supports which are inserted from the side into a roll ¨

preferably provided with a hollow cardboard core. Such axle supports are called end caps.
Date Recue/Date Recieved 2022-11-04 ¨ Two separate axle supports which are preferably pressed into corelessly wound rolls from the side in the axial region. Such axle supports are called holding tips.
Bearing unit: Bearing unit denotes a unit consisting of axle support and journals, which is insertable in its entirety into a refill.
Dispensers for material webs (refills) wound into rolls are known in a variety of designs. The material webs are predominantly paper, in particular sanitary or hygiene paper, kitchen paper, etc. but also plastic films or metal foils. The dispensers often have opposing walls, in which guide paths from a filling point at least into a dispensing position, and optionally further into a collection chamber for empty bearing units accommodating the rolls, are provided.
With the two journals of a bearing unit a new refill is thus inserted into the two guide paths and then generally slides downwards into the dispensing position under the influence of gravity. If the journals are formed on the ends of a supporting rod, then once the roll has been used up the empty supporting rod falls further downwards into the collection chamber, and can be removed from there.
If the refills are always to be inserted in the same way and in the correct position, for example in order that the material web is always provided in the same position, then both the two guide paths and the two journals are formed differently, in order to prevent incorrect insertion.
The correspondence between the mirror-inverted element pair of guide path and journal is called coding, and known codings comprise for example the diameter of the journal and the gap width of the guide path, a journal with a bearing channel and bars on the guide path engaging therein, parallel non-rotating surfaces on the journal and on the guide path, etc. By means of different codings, it is possible in particular to prevent a dispenser from being refilled with unsuitable rolls, and to ensure that matching products are used (EP
1927308 B1).
A further development of the above-described coding is shown in WO 2013/123536 A2. The supporting rod (bearing unit) described there for a material web wound into a roll has a journal which is rotatably mounted on the rest of the supporting rod. In the dispenser itself, there is a device (in the simplest case a ridge which engages in a groove of the journal) which holds the journal in a rotationally fixed manner. Through the rotatability of the journal relative to the other supporting rod on which the material web is wound, the roll with the material web can rotate in the dispensing position and thus the material web can be unwound, although ¨ as already Date Recue/Date Recieved 2022-11-04 mentioned ¨ the journal is held in a rotationally fixed manner. If a "wrong"
supporting rod is inserted, in the case of which the relative rotatability between bearing surface and the rest of the supporting rod is not provided, the roll cannot rotate in the dispensing position and the dispenser is jammed. As a whole, this function is called a "rotary coding".
The object of the invention is to specify a further coding possibility for a dispenser, a refill or an associated bearing unit and/or to specify a bearing unit or refill which can move, guided well, in at least one guide path of a dispenser.
This object is achieved by a refill with the features of claim 10 or 31, a bearing unit with the features of claim 24 and/or a dispenser with the features of claim 1 or 32.
The essence of the invention is that on the one hand a special formation with an asymmetrical circumferential groove is specified for the refill or its journals and/or on the other hand a special guide path with a guide bar which is aligned parallel to the path plane is proposed for a dispenser.
These features make it possible to provide a novel coding, in which only particular journals or refills fit into particular dispensers.
The asymmetrical circumferential groove according to the invention and/or the guide bar, fitting it, provided on the dispenser side and aligned parallel to the path plane also, irrespective of the novel coding, make it possible to guide the refill in the dispenser exactly during the movement from the insertion position into the dispensing position, whereby a jamming or tilting of the refill in the dispenser is reliably prevented.
In general, the asymmetrical circumferential groove according to the invention will be provided only on one side of the refill, precisely like the associated guide bar in the dispenser (there as close as possible to the insertion position), in order to ensure that the refill cannot be inserted into the dispenser inverted by 180 .
A guide bar arranged in the region of the insertion position can in the first place prevent an incorrect insertion of a refill or of a wrongly coded or uncoded refill.
However, the guide bar can be inserted in a further manner, namely on the way from the insertion position to the dispensing position by attaching a "coding trap", which is preferably formed as a gap in the guide path, there for example in a horizontal or slightly inclined section.
Date Recue/Date Recieved 2022-11-04 The gap, or also several gaps offset one behind another, can be arranged such that only one end of a journal guided by the guide bar exactly over it passes the gaps or interruptions in the guide path. Wrongly coded or uncoded journals fall into the gap and thus cannot be used or dispensed in the dispenser.
A further insertion possibility of the guide bar aligned according to the invention is insertion in the dispensing position itself. There, it can in turn hold the correspondingly coded axle journal exactly in position and ¨ if this is desired ¨ also hold it in a rotationally fixed manner. In such a case, a movability of the refill with respect to the axle journal then has to be provided, since, without this movability/rotatability, no dispensing of a paper web can be effected in the case of an axle journal held firmly. A rotary coding can thus be realized in which only refills which have such a rotary-coded property are suitable for the dispensing. This rotary coding can on the one hand be realized in that the axle journal the asymmetrical circumferential groove of which is held in a rotationally fixed manner is mounted rotatably with respect to an axle support.
This axle support can consist for example of an end cap which is pushed into a cardboard sleeve, but it can also be formed as a continuous rod transverse through a paper roll.
Another possibility for producing a rotatability between the journal and the material web is to mount the material web sliding on an axle support which is fixedly connected to the journal. A
relative rotatability of the refill relative to the journal held firmly is then also realizable.
The subject of the invention is not only a specially formed dispenser, but also a refill in which the journal has at least one circumferential groove formed asymmetrical with respect to the axis of rotation. This circumferential groove will be formed in terms of its shape and its dimensioning such that it fits a corresponding guide bar in the associated dispenser.
A formation in which the circumferential groove, at its greatest depth, starting from the circumference up to beyond the axis of rotation, extends into the journal is particularly favourable. Through such a very deep circumferential groove in the form of a cut, very tall associated guide bars, which on the one hand allow a good mechanical guiding and on the other hand have a high level of coding security against the insertion of wrongly coded or uncoded rods, can be provided on the dispenser side.
If the floor of the circumferential groove is substantially flat and preferably runs transverse to the axis of rotation and next to it, it can easily be achieved that no rotation of the journal is possible for example in the dispensing position. This then has to be achieved relative to the Date Recue/Date Recieved 2022-11-04 refill, whereby a rotary coding is achieved in combination with the asymmetrically formed circumferential groove.
The term the circumferential groove incidentally does not mean that the groove extends over the entire circumference in the form of a continuous channel: on the contrary, it is preferably provided that the circumferential groove only extends over part of the circumference, whereas the rest of the circumferential region is preferably essentially part of a cylinder barrel. An asymmetry of the journal can thus be achieved in a simple manner, in particular in the form of a cut.
The invention relates not only to dispenser and refill, but also to a bearing unit around which the material web wound into a roll is then wound. The bearing unit itself consists substantially of an axle support, which is connected to the material web, and a specially coded journal. The axle support itself can be formed for example of two separate end caps.
However, it can also be a continuous rod.
The journal itself is preferably specially coded only on one side, namely by an asymmetrical circumferential groove.
The invention will now be described in more detail below with reference to the figures of the attached drawing, without being limited thereto. There are shown in:
Fig. 1 a schematic oblique view of a dispenser, Figs. 2 and 3 partial cross sections through the side walls of a dispenser housing, Fig. 4 an inside view of a side wall with a first design of the arresting device, Fig. 5 an oblique view of an opened dispenser with a correctly coded supporting rod, Fig. 6 an oblique view of an opened dispenser with a first design of a wrongly coded supporting rod, Fig. 7 a partial cross section through the side wall according to Fig.
6 in the region of the arresting device, Fig. 8 a partial cross section through the side wall according to Fig.
6 in the region of the arresting device with a second design of a wrongly coded supporting rod, Fig. 9 a top view of the arresting device, Fig. 10 a top view of a variant of the arresting device, and Figs. 11 and 12 oblique views of the region of the arresting device on a dispenser according to Fig. 5, Date Recue/Date Recieved 2022-11-04 Fig. 13 a perspective inside view of an opened dispenser with supporting rods in different positions, Fig. 14 an enlarged representation in the region of the insertion position according to Fig. 13, Fig. 15 a journal in the dispensing position, Fig. 16 an embodiment example of a toilet paper dispenser in a perspective opened position, Fig. 17 a similar representation to Fig. 16, but with an inserted journal in two different positions (once in the insertion position, once in the dispensing position), Fig. 18 a bearing unit formed of two opposing end caps, Fig. 19 an embodiment example of a refill according to the invention with two end caps in a perspective view, Fig. 20 the refill of Fig. 19 in a side view, Fig. 21 a bearing unit with a continuous axle support in a perspective view, Figs. 22 and 23 a top view with different rotational state of the journal, Fig. 24 an embodiment example with a continuous journal with a large diameter, in which the journal with the asymmetrical circumferential groove is firmly connected to the axle support.
A dispenser for toilet paper, hand towel paper or the like has, according to Fig. 1, a housing 1 with a rear wall, two side walls 3 parallel to one another and an openable cover 6. In the side walls 3 parallel to one another, two differently formed guide paths 4, 5 extend in each case in a plane from top to bottom into a dispensing position 10, in which elements, not shown, form a temporary bearing until the material web 12 wound into a roll 8 has been used up. The roll 8 rotates about its axis, in which a supporting rod 11 with journals 14, 15 protruding beyond the roll 8 on both sides is arranged. Instead of a supporting rod 11, the material web 12 can, according to Fig. 9 and Fig. 10, also be arranged on a cardboard sleeve 31 closed by means of two end caps 30, wherein the journals 14, 15 protrude axially from the two end caps 30.
As Figs. 2 and 3 show, the guide paths 4, 5 in the side walls 3 have a different cross section.
The guide path 4 is a simple groove with a rectangular cross section, and the guide path 5 represents a groove with a more complex cross section. The journals 14, 15 are also formed correspondingly, i.e. the journal 14 represents a cylindrical peg which engages loosely in the guide path 4. In contrast, the journal 15 has an end flange 24, which is recessed from the supporting rod 11 or from the end cap 30 by a neck groove 23 and in which a circumferential groove 25 formed as a cut is provided parallel to the neck groove 23. The circumferential groove 25 comprises in particular more than half of the diameter of the journal 15, and only a Date Recue/Date Recieved 2022-11-04 residual cross section in the shape of a circular segment remains. A fin-like bar 22 of the guide path 5 protrudes into the cut 25, with the result that the journal 15 slides in the guide path 5 in an axially non-displaceable and torque-proof manner. The fin-like bar 22 extends at least along a horizontal or moderately inclined section of the guide path 5, optionally up to just before the dispensing position 10. The fin-like bar 22 in each case bridges the arresting device visible in Fig. 4 for wrongly coded or uncoded journals, which has at least two interruptions 20a, 20b in the guide path, as will be explained in even more detail below.
Fig. 4 shows a section of a side wall 3 of the dispenser provided with the guide path 5. The guide path 5 begins at the insertion position 9 for the roll 8 with an entrance region tapering in a funnel-like manner, and continues in a section falling downwards in a slightly inclined manner.
In this section, approximately in the middle, two interruptions 20a, 20b are provided one after the other in the form in each case of a bulge or depression in the lower side wall of the guide path 5. As mentioned, the fin-like bar 22 begins in the entrance region and extends over the two interruptions 20a, 20b.
Fig. 5 shows an opened dispenser with a supporting rod 11, represented simplified, pushed into the guide paths 4, 5. As can be seen, the journal 15 slides over the interruptions 20, because, as can be seen from the enlarged representation in Fig. 3, the bearing width of the head region 24, thus its extent parallel to the axis of the roll 8, is larger than the width of each of the two interruptions 20a, 20b. A displacement of the supporting rod 11 or of the cardboard sleeve with end caps 30 in the axial direction is prevented by a guide surface, which can be provided in a different manner. For one thing, the guide surface can be formed on the fin-like bar 22 protruding into the circumferential groove 25. Furthermore, it is conceivable that a bar, not shown, or the like protrudes into the neck groove 23, and finally the guide surface can also be provided on the opposite second side wall 3 of the dispenser shown in Fig.

2.
Figs. 6 to 8 show, corresponding to Figs. 5 and 6, the same situation with two supporting rods 11' that are wrong or do not fit. As can be seen in detail from Figs. 7 and 8, the journal 17 of a supporting rod 11' is shorter, with the result that, when inserted into the guide path 5, it finds space on the left or, in the case of a wider neck groove 23, on the right next to the fin-like bar 22. Having arrived at the interruptions 20a or 20b, the journal 17 falls into the depression, from which the supporting rod 11' wound with the full roll 8 can be gripped and taken out again by hand only quite laboriously. The interruptions 20a, 20b thus represent an arresting device for rolls 8 with protruding, wrongly coded or uncoded journals 17.
Date Recue/Date Recieved 2022-11-04 Figs. 9 and 10 in each case show a top view of the section of the guide path 5 from Fig. 4 provided with the interruptions 20a, 20b in two different designs. Fig. 9 shows the offset arrangement of the two interruptions 20a, 20b one after the other as well as the fin-like bar 22 cut approximately parallel thereto. A schematically indicated journal 15 is shown in three positions one behind another, wherein it is guided by the bar 22 during its forward movement.
The width of the side wall of the groove is larger than the width of the journal, thus its axial extent parallel to the axis of the roll 8, and larger than the width of the interruptions 20a, 20b, with the result that the travelling journal 15 cannot fall into either of the two interruptions 20a, 20b of the arresting device, because it rests at least on one of the remaining strips 27a, 27b, 27c of the side wall.
A design with two interruptions 20a, 20b arranged next to one another and only separated by a thin middle strip 27d is represented in Fig. 10, wherein the guide surface is formed against axial displacement of the supporting rod 11 or of the cardboard sleeve provided with end caps 30 by resting against the opposite side wall 3 of the dispenser or in the guide path 4 thereof.
It is obvious that wrongly coded or uncoded supporting rods 11', as shown in Figs. 7 and 8, fall into the interruptions 20a, 20b of the arresting device.
Figs. 11 and 12 show oblique views of the section of the guide path according to Fig. 5, wherein a journal 15 is represented in the insertion position at the entrance into the guide path 5 in Fig. 11. The circumferential groove 25 parallel to the neck groove 23 between the head region 24 and the body of the journal 15 is clearly recognizable. The asymmetrical circumferential groove 25 represents a possibility of a journal-side coding, which the fin-like bar 22 is shaped to fit as coding of the guide path 5.
In the embodiment example represented in Fig. 13 the inside of an opened dispenser is shown.
A guide path 4, which has a guide bar 22, is arranged in the side wall 3. The guide bar 22, which extends into the guide path 4 from above in the manner of a fin, engages in the circumferential groove 25 formed asymmetrically according to the invention in the end region of the journal 15 and guides the latter into a first section of the guide path 4 following the insertion position 9. The interruption 20, already described further above, which stops wrongly coded or uncoded journals is also provided in this first section of the guide path 4. Only correctly coded journals with an asymmetrical circumferential groove 25, which are guided by the fin-like guide bar 22, can come over the interruption 20 safely by resting on the guide path 4.
Date Recue/Date Recieved 2022-11-04 Finally, the journal passes over the positions 15`, 15" ultimately into the position 15¨, which corresponds to the dispensing position 10. From there, the paper or generally the material web wound into a roll is then dispensed. It is to be mentioned here that, for the sake of clarity, only the journal 15 itself is shown in Fig. 13. In reality, the journal is only part of a bearing unit, namely an end cap, as is shown on the left in Fig. 18. The entire bearing unit of Fig. 18 consists, for the rest, of the left-hand end cap with the journal 15 and the right-hand end cap with a purely cylindrical uncoded journal.
Fig. 14 shows a section of Fig. 13 in the region of the insertion position 9 again in detail, wherein it is clearly visible how the guide bar 22 running parallel to the path plane engages in the asymmetrical circumferential groove 25 of the journal 15 and thus guides it safely over the interruption. The interruption, which is generally denoted 20 in Fig. 13, is in detail a two-part interruption with two laterally offset interruptions 20a and 20b lying one behind the other.
Fig. 15 shows the journal 15 in the dispensing position 10, in which the dispensing of the paper is effected by rotating the refill. Also in this dispensing position 10, a guide bar 20a aligned parallel to the path plane of the guide path engages in the asymmetrical circumferential groove 25. In this position, the journal is held in a torque-proof manner by the engagement of the guide bar 20a in the circumferential groove 25. A rotation of the refill roll, as is shown in Fig.
19, is only possible because the journal 15 is mounted rotatably relative to the end cap, which is plugged into a cardboard sleeve of the refill. Bearings which do not have this rotary coding jam. In such a case, no paper can be pulled off a roll.
The embodiment example represented in Fig. 16 is not a hand towel dispenser, as in the previously described figures, but a smaller dispenser for dispensing toilet paper, which is also designed more simply. However, a guide path 4 is again provided in the side path 3. In the left-hand side wall in Fig. 16, the mere guide path is shown without inserted journals. In the opposite, similarly running guide path, which has a simpler profile however, two right-hand end caps 30a are shown schematically, as will be explained in even more detail with reference to Fig. 18.
Fig. 17 differs from Fig. 16 only in that there two journals 15 are shown in two different positions, namely in the insertion position at the top and in the dispensing position 10 at the bottom.
Figs. 16 and 17 show, in the insertion position 9, a guide bar 22b, protruding in a fin-like manner, which in turn cooperates with an asymmetrical circumferential groove 25 of great Date Recue/Date Recieved 2022-11-04 depth in the journal 15, with the result that only refills which have such an asymmetrical circumferential groove ¨ coding ¨ can be inserted into the dispenser in the first place.
In addition to the guide bar 22b in the region of the insertion position 9, there is also a second guide bar 22a in the region of the dispensing position 10 in Figs. 16 and 17.
There, the journal 15¨, as Fig. 17 shows, rests on a bearing 29 of a control lever 28. This control lever is moved away via a mechanism, not represented in more detail, if the paper roll has been used up, whereby the journal and thus the empty refill can fall downwards out of the dispenser.
In the dispensing position represented in Fig. 17, the journal 15¨ is also held in a rotationally fixed manner. The refill can only rotate because the journal 15¨ is mounted rotatably relative to the end cap (rotary coding).
It can still be seen in Fig. 16 that the guide bar 22b in the insertion position 9 has a sloped region 18, which makes an easier insertion of a journal with an asymmetrical circumferential groove possible.
The embodiment example represented in Fig. 18 is a bearing unit which has two separate end caps 30 and 30a as axle support, which are insertable into a cardboard core sleeve 7, not represented here, of the refill (roll of wound paper). In order to make this insertion secured against rotating, the two end caps 30 and 30a have protrusions 26.
The right-hand end cap 30a in Fig. 18 is a standard end cap with a cylindrical journal 14. The left-hand end cap 30 is a special end cap according to the invention; in addition to the end cap itself, it also comprises a rotatably mounted journal 15, which is rotatable relative to the end cap 30 about an axis of rotation 13 (centre axis through the journal).
However, in operation ¨
as already mentioned previously ¨ the journal is held stationary in the dispensing position 10, while the entire refill 2 (material web 12/roll 8) rotates together with the end caps 30 and 30a.
An asymmetrical circumferential groove in the form of a cut is seen in Fig. 18 in the head region 24 of the journal 15. The term circumferential groove is used because the groove originates from the circumference of the otherwise cylindrical head region.
The cut is deeper than the axis of rotation 13. The two side walls 25a are parallel to one another and are perpendicular to the axis of rotation 13. The groove floor 25b is preferably flat and likewise lies perpendicular to the axis of rotation, but in Fig. 18 runs past this underneath.
Date Recue/Date Recieved 2022-11-04 The invention is not limited to cylindrical head regions of the journal, for example cubic or differently formed head regions can by all means also be provided. The important thing is that a groove is present which originates from the circumferential surface into the inside and is formed asymmetrical with respect to the axis of rotation.
Fig. 19 shows an embodiment example of a refill according to the invention with the end caps of Fig. 18 (the rear end cap 30a is not visible in Fig. 19). The wound material web 12 (roll 8) preferably has a cardboard core sleeve 7, which is not visible here, in the middle. The two end caps 30 and 30a are plugged into this. However, they can in principle also be plugged directly into a material web wound with a hollow space.
In the embodiment example represented in Fig. 20, the two end caps 30 and 30a are seen with their respective journals 14 and 15, wherein the journal 15 is formed specially according to the invention. On the one hand, it is preferably mounted rotatably relative to the end cap 30 about the axis 13. According to the invention it has a circumferential groove in the form of a cut 25, which is so deep that it goes to beyond the axis of rotation. The two side walls 25a are substantially parallel to one another, optionally opened upwards in a slightly V-shaped manner, in order to make an easier penetration of a guide bar 22 of the dispenser possible.
The floor 25b of the groove is preferably formed flat, in order that a guide bar 22a provided in the dispensing position can rest there and prevents a rotation of the head region of the journal 15. A particular rotary coding can thus be realized, because the paper (material web 12) can be unwound from the refill 2 only when the journal 15a is mounted rotatably relative to the end cap 30 and thus relative to the entire rest of the refill.
Fig. 21 shows a further embodiment example of a bearing unit according to the invention, in which two separate end caps 30 and 30a are not provided as axle support, but one continuous axle support 11 is. The latter again has protrusions 26, in order that this axle support can be inserted into a preferably corelessly wound roll secured against rotating. The journal 15 and the axle support 11 are mounted rotatably relative to one another. The axle journal 15 again has an asymmetrical circumferential groove originating from the circumference and running perpendicular to the axis of rotation.
The bearing unit represented in perspective in Fig. 21 is seen in Figs. 22 and 23, again in a top view with two different positions of the journal 15 relative to the axle support 11. In the position represented in Fig. 22 the deeply cut circumferential groove is seen with substantially parallel side walls which open slightly outwards. The axle journal 15 is rotated by 90 in Fig.
Date Recue/Date Recieved 2022-11-04 23, with the result that the view is into the groove 25 from above. The groove floor is thus also visible.
The two parts 15 and 11 are rotatably connected to one another by retaining means not represented in more detail in an axle bearing region 27. For example, they can be injection-moulded parts, which have protruding catch lugs or catch recesses, with the result that the two parts catch against one another but still remain rotatable after being pushed in. There are numerous possibilities for producing the relative rotatability of the two parts 15 and 11.
In the embodiment example represented in Fig. 24, a journal 15 which has an asymmetrical circumferential groove is again provided. The head region 24, which is larger in diameter than a neck groove 23, is also clearly recognizable.
In this embodiment example, the journal 15 is not rotatable relative to the fixed supporting rod, which has quite a large diameter, but rather is fixedly connected. If the journal 15 is held in a rotationally fixed manner in the dispenser via the asymmetrical circumferential groove 25 in the dispensing position 10, the material web 12 (roll 8) of the refill 2 can be unwound only when this material web is rotatable relative to the fixed supporting rod 11a by sliding.
Optionally, a cardboard core 7 can be present, but it is also possible for the material web to be wound directly onto the fixed supporting rod 11a.
Date Recue/Date Recieved 2022-11-04

Claims (32)

Claims

1. Dispenser, in particular sanitary dispenser for dispensing toilet paper or hand towel paper, for sections of a refill (2) with a material web (12) wound into a roll, in particular paper dispenser, wherein the refill (2) has at least one journal (15), which is guidable along a guide path (4) of the dispenser running substantially in a ¨
preferably vertical ¨ path plane from an insertion position (9) into a dispensing position (10), in which the refill (2) is rotatably mounted, characterized in that the guide path (4) in at least one section has a guide bar (22, 22a, 22b) aligned substantially parallel to the path plane for engagement in a circumferential groove (25) of the journal (15) formed asymmetrical with respect to an axis of rotation (13), wherein a guide bar (22a) is provided in the region of the dispensing position (10) and the journal (15) is held there in a torque-proof manner and in the axial direction.

2. Dispenser according to claim 1, characterized in that a guide bar (22b) is provided in the region of the insertion position (9).

3. Dispenser according to one of the preceding claims, characterized in that a guide bar (22) is arranged between insertion position (9) and dispensing position (10).

4. Dispenser according to claim 3, characterized in that the guide path (4) in the region of the guide bar (22) has a bearing surface (4a) running horizontally or in an inclined manner for the journal (15), which has at least one, preferably two interruptions (20a, 20b) laterally offset relative to one another and lying one behind the other.

5. Dispenser according to one of the preceding claims, characterized in that the at least one guide bar (22) has two parallel side surfaces running in the direction of the guide path, wherein the spacing of the side surfaces preferably lies between 1 mm and 5 mm.

6. Dispenser according to one of the preceding claims, characterized in that the guide bar (22) has a sloped region (18) on one side and thus its construction height increases in the direction running from the insertion position (9) towards the dispensing position (10) at the entrance-side end of the guide bar (22).

7. Dispenser according to one of the preceding claims, characterized in that it has two spaced apart, substantially parallel side walls (3), in or on which in each case a guide path (4) is formed, wherein the guide paths (4) run substantially symmetrically with respect to a centre plane between the two side walls (3).

8. Dispenser according to claim 7, characterized in that at least one guide bar (22) is arranged in only one of the two guide paths (4).

9. Dispenser according to claim 7 or 8, characterized in that the path plane lies parallel to the side walls (3) or coincides with them.

10. Refill in particular for a dispenser according to one of claims 1 to 9, with a material web (12) wound into a roll, in particular made of paper, and with at least one journal (14, 15) protruding along an axis of rotation (13) centrally from the roll (8), characterized in that the at least one journal (15) has at least one circumferential groove (25) formed asymmetrical with respect to the axis of rotation (13).

11. Refill according to claim 10, characterized in that at least one axle support (11, 30, 30a) connected to the roll is provided, to or on which at least one journal (14, 15) is attached, formed or movably mounted.

12. Refill according to claim 10 or 11, characterized in that, of two opposite journals (14, 15), only one (15) has an asymmetrical circumferential groove (25), while the other opposite journal (14) is firmly connected to the axle support (11, 30a) arranged centrally relative to the roll (8) or is formed thereon.

13. Refill according to claim 10 to 12, characterized in that the axle support (11) extends through the roll (8) and has a journal (14, 15) on both sides, of which journals at least one has an asymmetrical circumferential groove (25).

14. Refill according to claim 10 to 13, characterized in that, for a roll (8), two separate axle supports are provided, which are formed as ¨ preferably substantially cylindrical ¨ end caps (30, 30a), which are inserted into the roll at opposite ends in each case, wherein a journal (15) with an asymmetrical circumferential groove (25) is provided on at least one end cap (30).

15. Refill according to claim 10 to 14, characterized in that, for a roll, two separate axle supports are provided, which are formed as holding tips, which are inserted axially into the ¨ preferably corelessly wound ¨ roll at opposite ends in each case, wherein an asymmetrical circumferential groove is provided on at least one holding tip.

16. Refill according to one of claims 10 to 15, characterized in that at least one journal (15) is mounted movably on the axle support (11, 30).

17. Refill according to claim 16 and one of claims 10 to 15, characterized in that at least one journal (15) is mounted rotatably on the axle support (11, 30).

18. Refill according to one of claims 10 to 17, characterized in that at least one axle support is held ¨ preferably by radially protruding protrusions (26) ¨ in a rotationally fixed manner in the roll (8).

19. Refill according to one of claims 10 to 17, characterized in that at least one axle support (11a) is held rotatably with respect to the roll (8) in the latter.

20. Refill according to one of claims 10 to 19, characterized in that the material web is wound into a coreless roll.

21. Refill according to one of claims 10 to 19, characterized in that the material web is wound around a cylindrical core (7) ¨ preferably made of cardboard.

22. Refill according to one of claims 10 to 21, characterized in that the material web is a toilet paper ¨ preferably provided with tear-off perforations.

23. Refill according to one of claims 10 to 21, characterized in that the material web is a hand towel paper ¨ preferably formed without tear-off perforations.

24. Bearing unit in particular for a refill according to one of claims 10 to 23, with an axle support, which is insertable into a material web wound into a roll and which has at least one circumferential groove (25) asymmetrical with respect to the axis of rotation (13) defined by the journal (15) in the journal (15).

25. Bearing unit according to claim 24, characterized in that at least one journal (15) is mounted rotatably with respect to the axle support (11, 30) about its longitudinal axis (13).

26. Bearing unit according to claim 24 or 25, characterized in that the circumferential groove (25) running transverse to the axis of rotation (13) only extends over part of the circumference of the at least one journal (15), while the remaining circumferential region is preferably essentially part of a cylinder barrel, the height of which in the direction of the axis of rotation is greater than the width of the groove.

27. Bearing unit according to one of claims 24 to 26, characterized in that the circumferential groove (25), at its greatest depth, starting from the circumference, extends beyond the axis of rotation (13) into the journal (15).

28. Bearing unit according to one of claims 24 to 27, characterized in that the two side walls (25a) of the circumferential groove (25) lie substantially perpendicular to the axis of rotation (13).

29. Bearing unit according to one of claims 24 to 28, characterized in that the floor (25b) of the circumferential groove (25) is substantially flat and preferably runs transverse to the axis of rotation (13) and next to it.

30. Bearing unit according to one of claims 24 to 29, characterized in that the circumferential groove (25) is formed in an end-side, substantially cylindrical head region (24), to which a neck (23) with reduced diameter is attached.

31. Refill with a bearing unit according to one of claims 24 to 30 and a material web (12) wound into a roll, into which the bearing unit (11, 30, 30a; 14, 15) is inserted.

32. Dispenser according to one of claims 1 to 9 with a refill (2) according to one of claims to 23 or claim 31.