Dispenser, refill and support unit

Abstract

The invention relates to a dispenser for sections of a refill (2) with a web (12) of material wound into a roll, in particular a sanitary dispenser for dispensing toilet paper or paper towels, in particular a paper dispenser, wherein the refill (2) has at least one bearing pin (15) which can be guided along a guide track (4) of the dispenser which extends essentially in a preferably vertical track plane from an introduction position (9) into a dispensing position (10) in which the refill (2) is rotatably supported, wherein the guide track (4) has in at least one section a guide web (22, 22a, 22b) which is oriented essentially parallel to the track plane for engaging into a circumferential groove (25) of the bearing pin (15) which is configured asymmetrically with respect to an axis of rotation (13), wherein a guide web (22a) is provided in the region of the dispensing position (10) and the bearing pin (15) is held there non-twistably and in axial direction.

Description

TECHNICAL FIELD

[0001] The present invention relates to a dispenser, in particular a sanitary dispenser for dispensing toilet paper or paper towels. The present invention further relates to a refill and to a support unit for such a refill. BACKGROUND

[0002] In the present application the following concepts are used essentially as follows, without being limited thereto:

[0003] Dispenser: A dispenser is preferably a wall-mountable device comprising a housing for accommodating a refill with a web of material wound into a roll. The dispenser typically has a guide track inside which leads from an upper infeed position to a lower dispensing position. From the refill, support pins protrude which are guided in the guide track. In the dispensing position, the refill can be rotated in order to unwind the material and to output it stepwise from the dispenser.

[0004] Refill: A refill is understood to be a web of material, in particular paper, wound into a roll. From both sides, support pins protrude from the refill, by means of which the refill is rotatably supported.

[0005] Support pin: A support pin protruding from the refill serves to rotatably support the refill in the dispenser.

[0006] Shaft holder: A shaft holder is in connection with the web of material wound into a roll on the one hand and supports the support pins protruding beyond the roll on the other hand.

[0007] There are at least three types of shaft holders:

[0008] - One shaft holder which extends essentially through the roll of the refill. Such a shaft holder is called a support rod.

[0009] - Two separate shaft holders which are inserted from the side into the roll, preferably of a paperboard core provided with a hollow. Such a shaft holder is called an end cap.

[0010] - Two separate shaft holders which are pressed from the side into the coreless wound roll, preferably in the axial region. Such a shaft holder is called a retaining tip.

[0011] Support unit: The structural unit consisting of a shaft holder and support pins is called a support unit, which as a whole can be inserted into the refill.

[0012] Dispensers for material webs (refill) wound into rolls are known in many embodiments. The material webs are mainly paper, especially toilet paper or sanitary paper, household paper, etc., but also plastic film or metal foil. The dispensers often have opposite walls in which guide tracks are provided from the filling position at least into the dispensing position and, if necessary, further into a collection chamber for empty holding rolls.

[0013] Thus, a new refill together with the two support pins of the holding unit are inserted into the two guide tracks and then, usually under the influence of gravity, slide down into the dispensing position. When the support pins are configured on the end of a support rod, then the empty support rod falls further down into the collection chamber after the roll is used up and can be removed there.

[0014] If the refill should always be the same and inserted correctly in position, for example so that the material web is always provided in the same position, then not only the two guide tracks but also the two support pins are configured differently to prevent the opposite insertion.

[0015] The agreement of the mirror-inverted element pairs consisting of guide track and support pin is called coding, and the known codings include, for example, the diameter of the support pin and the gap width of the guide track, a support pin with a support groove and a tab engaging into the support groove on the guide track, parallel non-rotating surfaces on the support pin and on the guide track, etc. With different codings it is possible, among other things, to avoid refilling the dispenser with an unsuitable roll and to ensure the coordinated use of the product (EP 1927308 B1).

[0016] A further improvement of the above-described coding is shown in WO 2013 / 123536 A2. The holding rod (holding unit) for material webs wound into rolls described there has a support pin which is rotatably supported on the rest of the holding rod. In the dispenser itself there is a device which holds the support pin non-rotationally relative (in the simplest case a rib which engages into a groove of the support pin). By the relative twistability of the support pin relative to the other holding rod on which the material web is wound, the roll with the material web can be rotated in the dispensing position and thus the material web is unwound, although, as already mentioned, the support pin is held non-rotationally relative. When a "wrong" holding rod is inserted, in which the relative twistability between the support surface and the rest of the holding rod is not given, then the roll cannot be rotated in the dispensing position and the dispenser is locked. This function is generally referred to as "rotation coding". SUMMARY

[0017] It is the task of the present invention to specify a further coding possibility for a dispenser, a refill or a supporting unit therefor and / or to specify a supporting unit or a refill which can be moved in a good guided manner in at least one guide track of a dispenser.

[0018] This task is solved by a refill, a supporting unit and / or a dispenser.

[0019] Dispenser for sections of a refill with a web of material wound into a roll, wherein the refill has at least one supporting pin which can be guided along a guide track of the dispenser which extends essentially in a track plane from an introduction position into a dispensing position, in which the refill is rotatably supported, characterized in that the guide track has in at least one section a guide web which is oriented essentially parallel to the track plane, which is used to engage into a circumferential groove of the supporting pin which is configured asymmetrically with respect to the axis of rotation, wherein a second guide web is provided in the region of the dispensing position and the supporting pin is held there non-rotatably and in axial direction.

[0020] Refill with a web of material wound into a roll and with at least one supporting pin which projects centrally from the roll along an axis of rotation, characterized in that the at least one supporting pin has at least one circumferential groove which is configured asymmetrically with respect to the axis of rotation.

[0021] Supporting unit with a shaft holder which can be inserted into a web of material wound into a roll and which has in the supporting pin at least one circumferential groove which is asymmetric with respect to the axis of rotation defined by the supporting pin.

[0022] The essence of the invention consists in that, on the one hand, a special construction of a circumferential groove which is asymmetric is specified for the refill or its supporting pin and / or, on the other hand, a special guide track is proposed for the dispenser which has a guide web which is oriented parallel to the track plane. These features allow a new type of coding to be provided, in which only specific supporting pins or refills match specific dispensers.

[0023] The asymmetric circumferential groove according to the invention and / or the guide web which is provided on the dispenser side, which matches the circumferential groove and which is oriented parallel to the track plane, allows the refill in the dispenser to be guided precisely when moving from the introduction position into the dispensing position in addition to the new type of coding, whereby a jamming or tilting of the refill in the dispenser is reliably avoided.

[0024] In general, the asymmetric circumferential groove according to the application is provided on one side of the refill only, just like the guide tab in the associated dispenser (there as close as possible to the introduction position), to ensure that the refill cannot be put into the dispenser in the reverse direction by 180°.

[0025] The guide tab arranged in the region of the introduction position prevents the incorrect insertion of a refill or of an incorrectly coded or non-coded refill from the outset.

[0026] But the guide tab can also be inserted in other ways, namely on the path from the introduction position to the dispensing position, in such a way that, for example, a "coding trap" is installed in a horizontal or slightly inclined section there, which is preferably configured as a gap in the guide track. The gap or a plurality of successively staggered gaps can be arranged in such a way that only one end of the bearing pin, through which the guide tab precisely guides, passes through the gap or interruption of the guide track. Incorrectly coded or non-coded bearing pins fall into the gap and thus cannot be used or output in the dispenser.

[0027] Another possibility of use of the guide tab oriented according to the application is in the dispensing position itself. There, the guide tab can again hold the correspondingly coded journal precisely in place and, if this is desired, also non-rotatably. In this case, the movability of the refill relative to the journal must therefore be provided, since without this movability / rotatability the output of the web in a fixedly held journal cannot be achieved. A rotational coding can thereby be achieved, wherein only refills with this rotational coding feature are suitable for the output. The rotational coding can be achieved, on the one hand, in that the journal, the asymmetric circumferential groove of which is held non-rotatably, is rotatably supported relative to the shaft holder. The shaft holder can consist, for example, of an end cap which is pushed into the paperboard sleeve, but the shaft holder can also be configured as a continuous small rod which traverses the paper roll.

[0028] Another possibility of creating a rotatability between the bearing pin and the material web consists in that the material web is slidingly supported on a shaft holder which is fixedly connected to the bearing pin. The relative rotatability of the refill relative to the fixedly held bearing pin can thereby also be achieved.

[0029] The subject of the application is not only a particularly configured dispenser, but also a refill, wherein the bearing pin has at least one circumferential groove which is asymmetrically configured with respect to the axis of rotation. The circumferential groove is configured in terms of its shape and its dimensions in such a way that it matches the corresponding guide tab in the associated dispenser.

[0030] Particularly advantageous is a configuration in which the circumferential groove extends with its greatest depth from the circumference into the bearing pin beyond the axis of rotation. By means of this very deep circumferential groove in the form of a recess, it is possible to provide a very high associated guide tab on the dispenser side, which allows good mechanical guidance on the one hand and high coding security on the other hand against the insertion of a wrongly coded or non-coded stick.

[0031] If the bottom of the circumferential groove is substantially flat and preferably extends laterally next to the axis of rotation, it is possible in a simple manner to achieve, for example, that the rotation of the bearing pin cannot be achieved in the dispensing position. This rotation must therefore be achieved with respect to the refill, thereby achieving a rotational coding in combination with the asymmetrically configured circumferential groove.

[0032] Furthermore, the term "circumferential groove" does not mean that the groove extends around in the form of a surrounding channel over the entire circumference: rather, it is preferably provided that the circumferential groove extends only over a part of the circumference, while the remaining circumferential area is preferably part of the substantially cylindrical housing. In this way, the asymmetry of the bearing pin can be achieved in a simple manner, in particular in the form of a recess.

[0033] The invention relates not only to a dispenser and a refill, but also to a bearing unit, which is then wound with a material web wound into a reel. The bearing unit itself consists substantially of a shaft holder in connection with the material web and a specially coded bearing pin. The shaft holder itself can consist, for example, of two separate end caps. However, the shaft holder can also be a continuous stick.

[0034] The bearing pin itself is preferably specially coded on one side only, more precisely by means of an asymmetric circumferential groove. BRIEF DESCRIPTION OF DRAWINGS

[0035] The invention will now be described in detail below with the aid of the drawings, without being limited thereto. In the drawings:

[0036] Figure 1 a schematic perspective view of a dispenser is shown,

[0037] Figure 2 and Figure 3 a partial cross-section of a side wall of a dispenser housing is shown,

[0038] Figure 4 an internal view of a catch device with a side wall of a first embodiment is shown,

[0039] Figure 5 a perspective view of an open dispenser with a correctly coded bearing stick is shown,

[0040] Figure 6An oblique view of an open dispenser in a first embodiment of a support bar with error coding is shown.

[0041] Figure 7 Showing according to Figure 6 The partial cross-section of the sidewall in the area of ​​the trapping device.

[0042] Figure 8 Showing according to Figure 6 A portion of the cross-section of the sidewall in the area of ​​the trapping device of the second embodiment with the erroneously coded support rod.

[0043] Figure 9 A top view of the trapping device is shown.

[0044] Figure 10 A top view showing a variant of the trapping device, and

[0045] Figure 11 and Figure 12 Shown in accordance with Figure 5 A perspective view of the area of ​​the trapping device on the dispenser.

[0046] Figure 13 The diagram shows an open dispenser with a small stick in different positions, in a perspective internal view.

[0047] Figure 14 Showing according to Figure 13 A magnified view of the area where the import is located.

[0048] Figure 15 The support pins in the allocation position are shown.

[0049] Figure 16 An embodiment of the toilet paper dispenser is shown in the open position with perspective view.

[0050] Figure 17 Showing with Figure 16 Similar diagrams, however, show inserted support pins in two different locations (one for inlet, one for outlet).

[0051] Figure 18 The diagram shows a support unit consisting of two opposing end caps.

[0052] Figure 19 An embodiment of a refill component with two end caps according to the invention is shown in perspective view.

[0053] Figure 20 Shown in side view Figure 19 Refilling parts,

[0054] Figure 21 A perspective view shows a support unit with continuous shaft supports.

[0055] Figure 22 and Figure 23 a plan view showing the bearing pin in different rotational states,

[0056] Figure 24 one embodiment of a continuous bearing pin with a large diameter, wherein the bearing pin with an asymmetric peripheral groove is fixedly connected with the shaft holder. DETAILED DESCRIPTION

[0057] Dispenser for hand paper, paper towels or the like according to Figure 1 with a housing 1 having one rear wall, two mutually parallel side walls 3 and an openable cover 6. In the mutually parallel side walls 3, two differently configured guide tracks 4, 5 respectively extend in one plane from above downwards into a dispensing position 10, in which a not shown element forms a temporary support until the material web 12 wound into a reel 8 is used up. Here, the reel 8 rotates about its axis, in which a bearing bar 11 with bearing pins 14, 15 projecting on both sides of the reel 8 is arranged. Instead of the bearing bar 11, the material web 12 can be guided according to Figure 9 and Figure 10 can also be arranged on a cardboard sleeve 31 closed by means of two end caps 30, wherein the bearing pins 14, 15 axially project from the two end caps 30.

[0058] As shown in Figure 2 and Figure 3 the guide tracks 4, 5 in the side walls 3 have different cross sections. The guide track 4 is a simple slot with a rectangular cross section, and the guide track 5 is a slot with a more complex cross section. The bearing pins 14, 15 are also correspondingly configured, that is to say the bearing pin 14 is a cylindrical pin which engages loosely into the guide track 4. While the bearing pin 15 has an end flange 24 projecting from the bearing bar 11 or from the end cap 30 through a neck slot 23, in which a circumferential slot 25 configured as a recess is provided parallel to the neck slot 23. The circumferential slot 25 in particular encloses more than half the diameter of the bearing pin 15 and only leaves a remaining cross section in the form of a circular segment. The fin-shaped tab 22 of the guide track 5 projects into the recess 25, so that the bearing pin 15 slides in the guide track 5 without axial movement and without relative rotation. The fin-shaped tab 22 extends at least along a horizontal or moderately inclined section of the guide track 5, if necessary up to shortly in front of the dispensing position 10. In any case, the fin-shaped tab 22 bridges the gap between the end flange 24 and the end cap 30. Figure 4 A capture device for incorrectly coded or uncoded bearing pins, which has at least two interruptions 20a, 20b in the guide track, can be seen in

[0059] Figure 4 A portion of the side wall 3 of the dispenser provided with the guide track 5 is shown. The guide track 5 begins at the introduction position 9 for the roll 8 having a funnel-like tapering input region and continues in a slightly inclined backward falling section. In said section, approximately in the middle two interruptions 20a, 20b are provided in succession each in the form of a bulge or recess in the lower side wall of the guide track 5. As already mentioned, the fin-like tabs 22 begin in the input region and extend above the two interruptions 20a, 20b.

[0060] Figure 5 An open dispenser is shown having a support rod 11 pushed into the guide tracks 4, 5, which is shown in simplified form. As can be seen, the support pin 15 slides through the interruptions 20, because as can be seen in the enlarged view in Figure 3 The support width of the head region 24, i.e. its extension parallel to the axis of the roll 8, is greater than the width of each of the two interruptions 20a, 20b, as can be seen in the enlarged view in Figure 2 The support width of the head region 24, i.e. its extension parallel to the axis of the roll 8, is greater than the width of each of the two interruptions 20a, 20b, as can be seen in the enlarged view in

[0061] Figure 6 to Figure 8 Corresponding to Figure 5 and Figure 6 The same situation is shown with two faulty or mismatched support rods 11'. As can be seen in Figure 7 and Figure 8 It is visible in detail that the support pin 17 of the support rod 11' is shorter, so that it lies next to the fin-like tab 22 on the left or on the right in the wider neck slot 23 when inserted into the guide track 5. If the interruption 20a or 20b is reached, the support pin 17 falls into the recess from which the support rod 11' wound with the entire roll 8 can only be grasped by hand with considerable effort and removed again. The interruptions 20a, 20b thus constitute a catch for the roll 8 having the protruding, incorrectly coded or un-coded support pin 17.

[0062] Figure 9 and Figure 10 The section of the guide track 5 of Figure 4 provided with the interruptions 20a, 20b is shown in a top view in two different embodiments, respectively. Figure 9The diagram shows the staggered arrangement of the two interruptions 20a and 20b, and the fin-shaped tabs 22 cut approximately parallel to them. The support pin 15 is schematically shown in three positions, where it is guided through the tabs 22 during its forward movement. The width of the sidewall of the groove is greater than the width of the support pin, that is, its axial extension length parallel to the axis of the drum 8, and greater than the width of the interruptions 20a and 20b, so that the moving support pin 15 will not fall into either of the two interruptions 20a and 20b of the trapping device, because the support pin at least abuts against one of the remaining strips 27a, 27b, and 27c of the sidewall.

[0063] exist Figure 10 The diagram shows one embodiment with two side-by-side interruptions 20a, 20b separated only by a thin intermediate strip 27d, wherein guide surfaces preventing axial movement of the support rod 11 or the cardboard sleeve with end caps 30 are formed by abutting against the opposite sidewalls 3 of the dispenser or in its guide rails 4. It is evident that miscoded or uncoded support rods 11', such as those in… Figure 7 and Figure 8 The image shows the parts that fall into the interrupted sections 20a and 20b of the trapping device.

[0064] Figure 11 and 12 Showing according to Figure 5 A perspective view of a section of the guide track, wherein... Figure 11 The image shows the support pin 15 at the inlet position in the guide rail 5. A circumferential groove 25 parallel to the neck groove 23 is clearly visible between the head region 24 and the body of the support pin 15. The asymmetrical circumferential groove 25 is one possibility for a coding on the support pin side, relative to which the fin-shaped tab 22 is shaped as a coding match for the guide rail 5.

[0065] exist Figure 13 The illustrated embodiment shows the interior of the open dispenser. A guide rail 4 with guide tabs 22 is arranged in the sidewall 3. The guide tab 22, extending fin-like from above into the guide rail 4, engages in the end region of the support pin 15 with a circumferentially constructed asymmetrical groove 25 according to the invention, and then the guide tab is introduced into the first section of the guide rail 4 at the insertion position 9. An interruption 20, as described above, is also provided in the first section of the guide rail 4, which blocks incorrectly coded or uncoded support pins. Only correctly coded support pins with asymmetrical circumferential grooves 25 (guided by the fin-like guide tabs 22) can reliably pass over the interruption 20 by being supported on the guide rail 4.

[0066] Finally, the support pin reaches via positions 15', 15" a position 15 which coincides with the dispensing position 10. From there, the paper or the material web wound into a roll is then output. It should be mentioned here that in Figure 13 the support pin 15 itself is shown for the sake of clarity. In reality, the support pin is only a part of the support unit, i.e. the end cap as shown on the left in Figure 18 . Furthermore, Figure 18 the entire support unit of the support pin 15 consists of a left end cap with the support pin 15 and a right end cap with a simple cylindrical, unencoded support pin.

[0067] Figure 14 is shown again in detail Figure 13 in the region of the introduction position 9, in which it can be clearly seen how the guide tab 22 extending parallel to the track plane engages into the asymmetric circumferential groove 25 of the support pin 15 and thus reliably guides the support pin via the interruption. In Figure 13 the interruption generally designated 20 in is in detail a two-part interruption having two successively consecutive, laterally offset interruptions 20a and 20b.

[0068] Figure 15 is shown in the dispensing position 10, in which the output of paper takes place by rotation of the refill. In this dispensing position 10, the guide tab 20a oriented parallel to the track plane of the guide track also engages into the asymmetric circumferential groove 25. In this position, the support pin is held rotationally fixed by the guide tab 20a engaging into the circumferential groove 25. The rotation of the refill roll is thus only possible as shown in Figure 19 , since the support pin 15 is torsionally supported relative to the end cap inserted into the paperboard sleeve of the refill. A support device without such a rotational coding is blocked. In this case, paper cannot be withdrawn from the roll.

[0069] In the embodiment shown in Figure 16 , instead of a towel dispenser as in the above figures, a smaller dispenser for outputting hand paper is involved, which is also more simply constructed. The guide track 4 is again provided in the lateral track 3. In the left wall in Figure 16 , the unshielded guide track without the inserted support pin is shown. In the oppositely extending, similarly extending guide track, which of course has a simpler profile, the two right end caps 30a are shown schematically, as they are passed by Figure 18 , which is explained in more detail.

[0070] Figure 17 with Figure 16The difference only consists in that there the two support pins 15 are shown in two different positions, namely in the introduction position shown above and in the dispensing position 10 shown below.

[0071] In Figure 16 and Figure 17 the fin-like projecting guide tab 22b is seen in the introduction position 9, which in turn cooperates with the deep, asymmetric circumferential groove 25 of the support pin 15, so that from the outset only the refill can be inserted into a dispenser having such an asymmetric circumferential groove (coding).

[0072] In Figure 16 and Figure 17 in addition to the guide tab 22b in the area of the introduction position 9, there is also a second guide tab 22a in the area of the dispensing position 10. There the support pin 15"' (as shown in Figure 17 ) rests on the support 29 of the control lever 28. When the paper roll is used up, said control lever is moved away via a mechanism not shown in detail, whereby the support pin and thus the empty refill can fall down from the dispenser.

[0073] In the dispensing position shown in Figure 17 the support pin 15"' is held rotationally fixed. The refill can therefore only rotate, since the support pin 15"' is torsionally supported with respect to the end cap (rotation coding).

[0074] It can also be seen in Figure 16 that the guide tab 22b has a beveled area 18 in the introduction position 9, which enables easier introduction of the support pin having an asymmetric circumferential groove.

[0075] In the embodiment shown in Figure 18 a support unit is involved, which has two separate end caps 30 and 30a as shaft supports, which can be inserted into the paperboard core sleeve 7 (not shown here) of the refill (roll made of wound paper). In order to prevent such an insertion rotation, the two end caps 30 and 30a have a protrusion 26.

[0076] In Figure 18 the right end cap 30a is a standard end cap with a cylindrical support pin 14. The left end cap 30 is a special end cap according to the invention, which in addition to the end cap itself comprises a rotatably supported support pin 15, which can rotate with respect to the end cap 30 about the rotation axis 13 (through the central axis of the support pin). However in operation, as already mentioned, this support pin is held position fixed in the dispensing position 10, while the entire refill 2 (material web 12 / roll 8) rotates with the end caps 30 and 30a.

[0077] In Figure 18 the head region 24 of the bearing pin 15 an asymmetric circumferential groove in the form of a recessed cutout is seen. The term "circumferential groove" is used because the groove leads from the circumference of the head region which is otherwise cylindrical. The recessed cutout is deeper than the axis of rotation 13. The two side walls 25a are parallel to each other and perpendicular to the axis of rotation 13. The groove bottom 25b is preferably flat and likewise perpendicular to the axis of rotation, but in Figure 18 the embodiment shown extends past this axis of rotation downwards.

[0078] The invention is not limited to a cylindrical head region of the bearing pin, but a cuboidal or otherwise configured head region can of course also be provided. It is important that a groove which leads from the circumferential face to the interior and which is asymmetrically configured with respect to the axis of rotation is present.

[0079] Figure 19 An embodiment of a refill according to the invention is shown which has Figure 18 an end cap (rear end cap 30a not visible in Figure 19 ). Preferably, the wound material web 12 (roll 8) has a paperboard core sleeve 7 in the middle, which is not visible here. The two end caps 30 and 30a are inserted into the paperboard core sleeve. But in principle it is also possible to insert directly into the material web which is wound in a cavity.

[0080] In Figure 20 the embodiment shown the two end caps 30 and 30a and their respective bearing pins 14 and 15 are seen, wherein the bearing pin 15 is particularly configured according to the invention. The bearing pin is rotatably supported about the axis 13 with respect to the end cap 30 on the one hand. The bearing pin has a circumferential groove in the form of a recessed cutout 25 according to the invention, which is so deep that it extends beyond the axis of rotation. The two side walls 25a open upwards substantially parallel to each other, if necessary slightly V-shaped, in order to enable easier access of the guiding tab 22 of the dispenser.

[0081] The bottom 25b of the groove is preferably configured flat, in order to be able to abut the guiding tab 22a which is arranged in the dispensing position there and to prevent a twisting of the head region of the bearing pin 15. Thus, a particular rotational coding can be achieved, because only when the bearing pin 15a is rotatably supported with respect to the end cap 30 and thus with respect to the entire refill as a whole, the paper (material web 12) can be unwound from the refill 2.

[0082] Figure 21Another embodiment of a bearing unit according to the application is shown, in which two separate end caps 30 and 30a are not provided as shaft holders, but one continuous shaft holder 11 is provided. This shaft holder also has a protrusion 26, by means of which the shaft holder can be inserted into a preferably coreless winding drum without relative rotation. The bearing pin 15 and the shaft holder 11 can be supported with relative rotation. The bearing pin 15 also has an asymmetric circumferential groove running perpendicularly to the axis of rotation from the circumference.

[0083] In Figure 22 and Figure 23 a bearing unit is shown again in a top view as in Figure 21 , in which the bearing pin 15 has two different positions relative to the shaft holder 11. In the position shown in Figure 22 , a deeply cut circumferential groove is seen, which has slightly outwardly opening substantially parallel side walls. In Figure 23 , the journal 15 is twisted through 90°, so that the groove 25 is seen from above. The groove bottom is thus also visible.

[0084] In the bearing region 27, the two components 15 and 11 are connected to each other rotatably by a holding mechanism, which is not shown in detail. For example, the components can be injection-molded parts with protruding latching projections or latching recesses, so that the two components are locked to each other after being pushed in, but remain rotatable at all times. There are various possibilities to establish the relative twistability of the two components 15 and 11.

[0085] In the embodiment shown in Figure 24 , the bearing pin 15 is again provided with an asymmetric circumferential groove. The head region 24, which has a larger diameter than the neck groove 23, is also clearly visible.

[0086] In this embodiment, the bearing pin 15 is not twistable relative to the fixed, comparably large bearing rod, but is connected fixedly. If the bearing pin 15 is held in the dispensing position 10 without relative rotation by means of the asymmetric circumferential groove 25 in the dispenser, the material web 12 of the refill 2 (winding drum 8) can only be unwound if this material web can be twisted relative to the fixed bearing rod 11a by sliding. Here, a paperboard core 7 can optionally be provided, but it is also possible to wind the material web directly on the fixed bearing rod 11a.

Claims

1. Dispenser for sections of a refill (2) with a web (12) of material wound into a reel, wherein The refill (2) has at least one bearing pin (15) which can be guided along a guide track (4) of the dispenser which extends essentially in a track plane from an introduction position (9) into a dispensing position (10) in which the refill (2) is rotatably supported, characterized in that the guide track (4) has in at least one section a guide web which is oriented essentially parallel to the track plane for engaging into a circumferential groove (25) of the bearing pin (15) which is configured asymmetrically with respect to an axis of rotation (13), wherein a second guide web (22a) of the guide webs is arranged in the region of the dispensing position (10) and the bearing pin (15) is held there non-rotatably and in its axial direction.

2. The dispenser of claim 1, wherein, The dispenser is a hygiene dispenser for outputting hand paper or paper towels.

3. The dispenser of claim 1, wherein, The dispenser is a paper dispenser.

4. The dispenser of claim 1 or 2, wherein, The track plane is a vertical track plane.

5. The dispenser of claim 1 or 2, wherein, A first guide web (22b) of the guide webs is arranged in the region of the introduction position (9).

6. The dispenser of claim 1 or 2, wherein, A third guide web of the guide webs is arranged between the introduction position (9) and the dispensing position (10).

7. The dispenser of claim 6, wherein, The guide track (4) has in the region of the third guide web a horizontally or obliquely extending bearing surface (4a) for the bearing pin (15) which has at least one interruption (20a, 20b).

8. The dispenser of claim 7, wherein, The bearing surface has two interruptions (20a, 20b) which are laterally offset from one another and successive.

9. The dispenser of claim 1 or 2, wherein, The guide web has two parallel, laterally extending side faces.

10. The dispenser of claim 9, wherein, The distance of the side faces is between 1 mm and 5 mm.

11. The dispenser of claim 1 or 2, wherein, The guide web has on one side an obliquely oriented region (18) and thus its structural height increases on the entry-side end of the guide web in the direction extending from the introduction position (9) towards the dispensing position (10).

12. The dispenser of claim 1 or 2, wherein, The dispenser has two spaced apart, essentially parallel side walls (3) in which or on which one guide track (4) is respectively configured, wherein the guide track (4) extends essentially symmetrically with respect to a midplane between the two side walls (3).

13. The dispenser of claim 12, wherein, At least one guide web is arranged in only one of the two guide tracks (4).

14. The dispenser of claim 12, wherein, The track plane is parallel to the side walls (3) or coincides with the side walls.

15. Refill for a dispenser according to any one of claims 1 to 14, having a web of material (12) wound into a roll and having at least one support pin which projects centrally from the roll (8) along an axis of rotation (13), characterized in that The at least one bearing pin has at least one circumferential groove (25) which is configured asymmetrically with respect to an axis of rotation (13).

16. The refill of claim 15, wherein, The material web (12) is a material web (12) made of paper.

17. Refill according to claim 15 or 16, characterized in that At least one shaft holder is provided in connection with the roll, on which at least one bearing pin is mounted, configured or movably supported.

18. The refill of claim 17, wherein, Only one bearing pin (15) of the two opposite bearing pins has an asymmetric circumferential groove (25), while the opposite other bearing pin (14) is fixedly connected or configured on a shaft holder (11, 30a) which is arranged centrally with respect to the roll (8).

19. The refill of claim 17, wherein, The shaft holder extends through the winding drum (8) and has bearing pins on both sides, at least one of which has an asymmetric circumferential groove (25).

20. The refill of claim 17, wherein, Two separate shaft holders are provided for a winding drum (8), which are configured as end caps that are inserted into the winding drum on opposite ends, wherein at least one end cap (30) is provided with a bearing pin (15) having an asymmetric circumferential groove (25).

21. The refill of claim 20, wherein, The end cap is a substantially cylindrical end cap.

22. The refill of claim 17, wherein, Two separate shaft holders are provided for a winding drum, which are configured as holding spikes that are axially inserted into the winding drum on opposite ends, wherein at least one holding spike is provided with an asymmetric circumferential groove.

23. The refill of claim 22, wherein, The winding drum is a coreless winding drum.

24. The refill of claim 17, wherein, At least one bearing pin (15) is movably supported on the shaft holder.

25. The refill of claim 24, wherein, At least one bearing pin (15) is rotatably supported on the shaft holder.

26. The refill of claim 17, wherein, At least one shaft holder is held in the winding drum (8) against rotation.

27. The refill of claim 17, wherein, At least one shaft holder is held in the winding drum (8) against rotation by a radially protruding protrusion (26).

28. The refill of claim 17, wherein, At least one shaft holder is held in the winding drum (8) rotatably relative to the winding drum.

29. The refill of claim 15 or 16, wherein, The material web is wound into a coreless winding drum.

30. The refill of claim 15 or 16, wherein, The material web is wound around a cylindrical core (7).

31. The refill of claim 15 or 16, wherein, The material web is wound around a cylindrical core (7) composed of paperboard.

32. The refill of claim 15 or 16, wherein, The material web is toilet paper.

33. The refill of claim 15 or 16, wherein, The material web is toilet paper provided with tear-open perforations.

34. The refill of claim 15 or 16, wherein, The material web is paper towel.

35. The refill of claim 15 or 16, wherein, The material web is paper towel without tear-open perforations.

36. Bearing unit for a refill according to any one of claims 15 to 35, having a shaft holder that can be inserted into a material web wound into a winding drum and having at least one circumferential groove (25) in the bearing pin (15) that is asymmetric with respect to an axis of rotation (13) defined by the bearing pin (15).

37. The support unit of claim 36, wherein, At least one bearing pin (15) is rotatably supported about its longitudinal axis (13) relative to the shaft holder.

38. Bearing unit according to claim 36 or 37, characterized in that The circumferential groove (25) extending transversely to the axis of rotation (13) extends only over a portion of the circumference of the at least one bearing pin (15).

39. The support unit of claim 38, wherein, The remaining circumferential area of the circumference of the bearing pin (15) is essentially part of a cylindrical shell that has a greater height in the direction of the axis of rotation than the width of the circumferential groove.

40. Bearing unit according to claim 36 or 37, characterized in that The circumferential groove (25) extends into the bearing pin (15) with its greatest depth from the circumference up to beyond the axis of rotation (13).

41. The bearing unit according to claim 36 or 37, characterized in that The two side walls (25a) of the circumferential groove (25) are essentially perpendicular to the axis of rotation (13).

42. The bearing unit of claim 36 or 37, wherein The bottom (25b) of the circumferential groove (25) is essentially flat.

43. The support unit of claim 42, wherein, The bottom (25b) of the circumferential groove (25) extends transversely to the axis of rotation (13) alongside the axis of rotation.

44. The bearing unit of claim 36 or 37, wherein, The circumferential groove (25) is configured in an end-side, essentially cylindrical head region (24) on which a reduced-diameter neck (23) is connected.

45. Refill with a support unit according to any one of claims 36 to 44 and a web of material (12) wound into a reel, the support unit being inserted into the web of material.

46. Dispenser with a refill (2) according to any one of claims 15 to 35 or claim 45.

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