Sensing arrangement for a dispenser

A dispenser for dispensing a coreless roll of absorbent paper, the dispenser comprising:

• a sensing arrangement for indicating the depletion of a coreless roll of absorbent paper web material in a dispenser, the sensing arrangement comprising:
• a roll support configured to be inserted into an inner circumference of said coreless roll with said roll extending over a roll support length so as to support said coreless roll, said roll support extending along a longitudinal center axis,
• the roll support comprising:
• at least one roll expanding portion extending over a part of said roll support length and having a maximum radial extension defining a first radius from said center axis, and
• at least one sensing portion, extending longitudinally over another part of said roll support length and having a maximum radial extension defining a second radius from said center axis,
• wherein said first radius is greater than said second radius by a sensing offset length, and
• a sensing element configured to sense that the web material remaining on the roll is depleted when a distance between the sensing element and the sensing portion becomes less than the first radius,
• wherein said sensing element is a mechanical sensing element that is pivotably arranged so as to be pivoted towards said sensing portion of said roll support.

A method for arranging a coreless roll of absorbent paper web material on a roll support comprised in a sensing arrangement for indicating depletion of a coreless roll of absorbent paper web material in a dispenser, the sensing arrangement comprising:

• a roll support configured to be inserted into an inner circumference of said coreless roll with said roll extending over a roll support length so as to support said coreless roll, said roll support extending along a longitudinal center axis,
• the roll support comprising:
• at least one roll expanding portion extending over a part of said roll support length and having a maximum radial extension defining a first radius from said center axis,
• and at least one sensing portion, extending longitudinally over another part of said roll support length and having a maximum radial extension defining a second radius from said center axis,
• wherein said first radius is greater than said second radius by a sensing offset length, and
• a sensing element configured to sense that the web material remaining on the roll is depleted when a distance between the sensing element and the sensing portion becomes less than the first radius, wherein said sensing element is a mechanical sensing element that is pivotably arranged so as to be pivoted towards said sensing portion of said roll support,
• the method comprising the step of arranging said coreless roll on said roll support such that said roll support supports an inner circumference of said roll and said roll extends over said roll support length.

A method for arranging a coreless roll of absorbent paper web material on a roll support comprised in a dispenser comprising a sensing arrangement for indicating depletion of a coreless roll of absorbent paper web material in a dispenser, the sensing arrangement comprising:

• a roll support configured to be inserted into an inner circumference of said coreless roll with said roll extending over a roll support length so as to support said coreless roll, said roll support extending along a longitudinal center axis,
• the roll support comprising:
• at least one roll expanding portion extending over a part of said roll support length and having a maximum radial extension defining a first radius from said center axis,
• and at least one sensing portion, extending longitudinally over another part of said roll support length and having a maximum radial extension defining a second radius from said center axis,
• wherein said first radius is greater than said second radius by a sensing offset length, and
• a sensing element configured to sense that the web material remaining on the roll is depleted when a distance between the sensing element and the sensing portion becomes less than the first radius, wherein said sensing element is a mechanical sensing element that is pivotably arranged so as to be pivoted towards said sensing portion of said roll support,
• the method comprising the step of arranging said coreless roll on said roll support such that said roll support supports an inner circumference of said roll and said roll extends over said roll support length.

A sensing arrangement for indicating the depletion of a coreless roll of absorbent paper web material in a dispenser, the sensing arrangement comprising:

• a roll support, configured for supporting an inner circumference of said coreless roll with said roll extending over a roll support length, said roll support extending along a longitudinal center axis,
• the roll support comprising:
• at least one roll expanding portion extending over a part of said roll support length and having a maximum radial extension defining a first radius from said center axis, and
• at least one sensing portion, extending longitudinally over another part of said roll support length and having a maximum radial extension defining a second radius from said center axis,
• wherein said first radius is greater than said second radius by a sensing offset length, and
• a sensing element configured to sense that the web material remaining on the roll is depleted when a distance between the sensing element and the sensing portion becomes less than the first radius;
• and
• wherein the sensing element includes a protruding portion that is configured to contact with the coreless roll when the coreless roll is in the dispenser, and the protruding portion pivots about an axis that is parallel to the roll support,
• wherein said sensing element is a mechanical sensing element that is pivotably arranged so as to be pivoted towards said sensing portion of said roll support.