Dispenser and method for dispensing portions of a continuous web of tissue from a tissue roll
10966577 · 2021-04-06
Assignee
Inventors
Cpc classification
A47K2010/3681
HUMAN NECESSITIES
International classification
Abstract
A dispenser for dispensing portions of a continuous web of tissue from a tissue roll is disclosed. Further, the invention relates to a method for dispensing portions of a continuous web of tissue from a tissue roll. The dispenser comprises a first tissue roll position for receiving a tissue roll and a second tissue roll position for receiving a tissue roll; an output mechanism for supplying portions of tissue; a transfer mechanism for releasably holding and transferring an end of a tissue roll in the first tissue roll position to the output mechanism; wherein the transfer mechanism is adapted to transfer the end of the tissue roll in the first tissue roll position to the output mechanism when the second tissue roll position is empty.
Claims
1. A dispenser for dispensing portions of a continuous web of tissue from a tissue roll, the dispenser comprising: a first tissue roll position for receiving a tissue roll and a second tissue roll position for receiving a tissue roll; a holding arrangement comprising a shift mechanism for shifting a holding mechanism for holding a tissue roll in the first tissue roll position, wherein the holding mechanism comprises a first holding element for engaging a first end of an axle of the tissue roll and a second holding element for engaging a second end of the axle of the tissue roll, wherein a distance between the first holding element and the second holding element in a release position is larger than a distance between the first holding element and the second holding element in a hold position, and wherein the shift mechanism comprises a transition element pivotably connected to a diameter sensor; an output mechanism for supplying portions of tissue; and a transfer mechanism for releasably holding and transferring an end of the tissue roll in the first tissue roll position to the output mechanism; wherein the transfer mechanism is adapted to transfer the end of the tissue roll in the first tissue roll position to the output mechanism when the second tissue roll position is empty, and the transfer mechanism comprises a transfer plate and at least one retainer flap to bias an end of a tissue roll against the transfer plate and releasably hold the end of the tissue roll between the transfer plate and the at least one retainer flap.
2. The dispenser pursuant to claim 1, wherein the transfer mechanism is adapted to transfer the end of the tissue roll in the first tissue roll position to the output mechanism independent from the direction of unrolling of the tissue roll in the first tissue roll position.
3. The dispenser pursuant to claim 1, further comprising a detector for detecting whether the second tissue roll position is empty.
4. The dispenser pursuant to claim 1, further comprising a tissue sensor for detecting the presence of a tissue connection from a tissue roll in the second tissue roll position to the output mechanism.
5. The dispenser pursuant to claim 4, wherein the transfer mechanism is adapted to transfer the end of the tissue roll in the first tissue roll position to the output mechanism when the tissue sensor indicates that there is no tissue connection from a tissue roll in the second tissue roll position to the output mechanism.
6. The dispenser pursuant to claim 1, wherein the transfer mechanism comprises a transfer rod, wherein the transfer rod is moveable from a service position for receiving the end of the tissue roll to a hand-over position for transferring the end of the tissue roll to the output mechanism.
7. The dispenser pursuant to claim 6, wherein the transfer plate is connected pivotably to the transfer rod or the transfer plate is pivotably projecting from the transfer rod.
8. The dispenser pursuant to claim 6, wherein: the transfer mechanism is adapted to repeat a movement from the service position to a hand-over position and back at least one, two, or three times; the output mechanism is adapted to operate in a reverse mode in case of a blockage; and the transfer mechanism is adapted to transfer the end of the tissue roll in the first tissue roll position to the output mechanism after an operation of the output mechanism in the reverse mode.
9. The dispenser pursuant to claim 1, wherein the output mechanism comprises at least two output rollers, including a driven roller and a tension roller, with an output gap between the output rollers.
10. The dispenser pursuant to claim 9, wherein at least one of the two output rollers has at least one recess in the form of a reduced diameter.
11. The dispenser pursuant to claim 9, wherein the at least one retainer flap of the transfer mechanism comprises at least one transfer projection for projecting into the at least one recess of the at least one of the two output rollers in a hand-over position.
12. The dispenser pursuant to claim 1, further comprising: a housing with an openable housing cover and a housing base for wall-mounting the dispenser; a dispensing opening; a cutting unit; a user interface; a proximity sensor for detecting the presence of a user; a control unit; a level indicator; a tissue roll axle receptacle; or an axle opening.
13. A dispenser module for a dispenser pursuant to claim 1, the dispenser module comprising: the output mechanism for supplying portions of tissue from the tissue roll; and the transfer mechanism for releasably holding and transferring an end of the tissue roll in the first tissue roll position of the dispenser to the output mechanism; wherein the transfer mechanism is adapted to transfer the end of the tissue roll in the first tissue roll position to the output mechanism when the second tissue roll position of the dispenser is empty; and wherein the transfer mechanism comprises a transfer plate and at least one retainer flap to bias an end of the tissue roll against the transfer plate and releasably hold the end of the tissue roll between the transfer plate and the at least one retainer flap.
14. The dispenser pursuant to claim 1, wherein the first holding element is horizontally or axially spaced from the first end of the axle of the tissue roll in the release position and the second holding element is horizontally or axially spaced from the second end of the axle of the tissue roll in the release position and the holding mechanism remains substantially within the same horizontal plane in the hold position and in the release position.
15. The dispenser pursuant to claim 1, wherein the first holding element comprises a first captive piece for interaction with a part of the tissue roll or the second holding element comprises a second captive piece for interaction with a part of the tissue roll; wherein the first holding element comprises a first identification element for identifying the tissue roll or the second holding element comprises a second identification element for identifying the tissue roll; and wherein the first holding element comprises a first form fit piece for engaging the axle or an axle cap of the tissue roll or the second holding element comprises a second form fit piece for engaging the axle or the axle cap of the tissue roll.
16. A method for dispensing portions of a continuous web of tissue from a tissue roll, the method comprising the steps of: receiving a tissue roll at a first tissue roll position; providing a holding arrangement for holding a tissue roll in the first tissue roll position by a holding mechanism, wherein the holding mechanism comprises a first holding element for engaging a first end of an axle of the tissue roll and a second holding element for engaging a second end of the axle of the tissue roll, wherein a distance between the first holding element and the second holding element in a release position is larger than a distance between the first holding element and the second holding element in a hold position; shifting a shift mechanism of the holding arrangement, wherein the shift mechanism comprises a transition element pivotably connected to a diameter sensor; releasably holding an end of a tissue roll in the first tissue roll position by a transfer mechanism comprising a transfer plate and at least one retainer flap by biasing an end of the tissue roll against the transfer plate and releasably holding the end of the tissue roll between the transfer plate and the at least one retainer flap; and transferring the end of a tissue roll in the first tissue roll position to an output mechanism for supplying portions of the tissue roll via the transfer mechanism when a second tissue roll position for receiving the tissue roll is empty.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Preferred embodiments shall now be described with reference to the attached drawings, in which
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DETAILED DESCRIPTION OF THE EMBODIMENTS
(25) In the Figures, elements with the same or comparable functions are indicated with the same reference signs.
(26) In the Figures, a dispenser 1 is shown with a housing 2 comprising a housing base 21 for wall mounting the dispenser 1 and an openable housing cover 22. The housing cover 22 is connected pivotably to the housing base 21.
(27) As can be seen in
(28) The dispenser 1 further comprises a holding arrangement 200 with a holding mechanism 210, a shift mechanism 300, and an output mechanism 400, a transfer mechanism 500, and a diameter sensor 600, which will be discussed in more detail below.
(29) As can be seen from
(30) As can be seen in
(31) At the lower end of the second tissue roll position 129, an axle opening 820 is provided through which an empty axle of the tissue roll can pass to enter a tissue roll axle receptacle 800, as can be seen in
(32) In
(33) As can be seen in
(34) In
(35) As can be seen in
(36) Further,
(37) At least one of the rollers 410 of the output mechanism 400 comprises several axially spaced recesses 430 in the form of a reduced diameter of the output roller 410. The transfer projections 540 of the retainer flaps 520 are adapted to project into the recesses 430 of the output roller 410 in order to transfer the end of the tissue into the gap 420 between the output rollers 410 in the handover position, as can be seen, for example, in
(38) The end of the tissue roll in the first tissue roll position can be inserted into the transfer mechanism 500 by inserting the end of the tissue roll between the retainer flaps 520 and the transfer plate 510. The end of a tissue roll can be biased in between. In the service position, the transfer plate 510 projects from the transfer rod 530 in direction toward a user when the housing is open. This facilitates the insertion of an end of the tissue roll into the transfer mechanism 500, in particular, between the retainer flaps 520 and the transfer plate 510, by a user. When the housing cover is closed, preferably the second projection 24 on the lower inner side of the housing cover 22 contacts the transfer plate 510 and slightly lifts the transfer plate 510 from its service position, shown in
(39) As can be seen, in particular, in
(40) This optical sensor 710 detects whether a tissue connection 41 is present between a tissue roll in the second tissue roll position 129 and the output mechanism 400. In case such a tissue connection 41 is present, as shown in
(41) Preferably, a cutting unit 11 (see
(42) Further preferably, a control unit 16 (see
(43) A user interface 15 with a user interface unit 19 and user interface sticker 17 provides information to a user. The status LED 18 can, for example, indicate a fault status to a user. Preferably, the user interface unit 19 does not comprise a microcontroller.
(44) Further, preferably, the output mechanism 400 is an automatic output mechanism 400 which is activated by a signal from a proximity sensor 14 for detecting the presence of a user. A dispenser 1 with such a functionality can also be described as a non-touch dispenser.
(45) The dispenser 1 further features a holding arrangement 200 with a holding mechanism 210 comprising a first holding element 211 for engaging a first end of an axle 110 of the tissue roll 100 and a second holding element 212 for engaging a second end of an axle 110 of the tissue roll 100. The holding mechanism 210 is shown in more detail in
(46) As can be seen from
(47) The indication surface 33 is preferably viewable through the indicator opening 25 in the housing cover 22 such that service personnel can see through the indicator opening 25 whether or not there is a tissue roll 100 at the first tissue roll position, i.e., whether the holding mechanism 210 is in the hold position or in the release position without having to open the housing cover 22 of the dispenser 1.
(48) The holding arrangement 200 further comprises a shift mechanism 300 for shifting the holding mechanism 210, in particular the first and second holding elements 211, 212, from the hold position to the release position and vice versa. The shift mechanism 300 comprises a transition element 900, which is pivotably connected to a diameter sensor 600. The shift mechanism 300 is mounted on the housing base 21, preferably via the support insert 910. The shift mechanism 300 further comprises a toggle mechanism. In particular, the shift mechanism 300 further comprises first and second connection arms 312, 322 projecting from the transition element 900 and first and second transition pieces 313, 323 pivotably connecting the first and second holding arms 311, 321 to the first and second connection arms 312, 322.
(49) The diameter sensor 600 is adapted to change its position with the changing, in particular, decreasing, diameter of the tissue roll 100, as can be seen in particular in
(50) The diameter sensor 600 has two locking elements 610 (see
(51) Once the locking elements 610 are unlocked by the upward and lateral movement of the diameter sensor 600 effected by the interaction of the guide element 620 with the contoured guide surface 621 in the reduced diameter position 600′, the shift mechanism 300 shifts to hold mechanism 210 into the release position. In the release position, the tissue roll 100 is released from the first tissue roll position and falls into the second tissue roll position. In order to decelerate this movement, stoppers 71 can be provided, as depicted in
(52) The shift mechanism 300 is biased in the release position, by two first biasing elements 241 in the form of springs, which connect the first transition piece 313 and the second transition piece 323 to the support insert 910 (see
(53) A switch 260 is provided, which generates a signal indicating whether the hold mechanism 210 is in the hold position of in the release position. This signal is transferred to the dispenser module via a connector 451. In particular, it can be preferred that the transfer mechanism cannot be activated as long as the switch 260 indicates that the hold mechanism 210 is in the release position.
(54) In the release position, the diameter sensor 600 and the lower end of the transition element 900 are spaced from the housing base 21, in particular the support insert 910. When a new tissue roll 100 is inserted into the first tissue roll position, the tissue roll 100 is pushed against the diameter sensor 600 and the transition element 900 and thus the shift mechanism 300 and the hold mechanism 210 are brought against the biasing force into the hold position and the locking elements 610 are locked, preferably in the support insert 910 and further snapped therein by pressure exerted by the first protrusion 23 on the housing cover 22 upon closing of the housing 2. The insertion of a new tissue roll into the first tissue roll position can be facilitated by providing lead wings 72, as depicted in
(55) In summary, a dispenser 1 is provided, featuring several advantages. By providing the output mechanism 400 and the transfer mechanism 500 together with the detector 700 for checking whether the second tissue roll position is empty, as described herein, a resource efficient solution is provided to transfer the end of a new referral tissue roll to the output mechanism only when the second tissue roll position is empty. Thus, double tissue usage is avoided.
(56) Further, by providing a holding arrangement 200, as described herein, a very easy and time-saving service of the dispenser 1 is possible, while at the same time providing reliable and full operative support for the tissue in the hold position and allowing a freefall of the tissue roll from the release position to the second tissue roll position, whilst maintaining the tissue connection from the tissue roll to the output mechanism 400.
(57) As soon as the tissue roll has been released from the first tissue roll position and has fallen into the second tissue roll position, the dispenser 1 can be provided with a new tissue roll by service personnel in the first tissue roll position regardless of the direction of unrolling. By inserting the end of the new refill tissue roll into the transfer mechanism 500, the dispenser 1 is ready for firstly completely using up the remaining tissue on the spare tissue roll in the second tissue roll position and subsequently transferring the end of the new refill tissue roll to the output mechanism 400 automatically and without the need for service personnel or user interaction. Thus, the dispenser 1 is reliable, has a high dispensing capacity and is resource, time, and cost efficient.