RU2319433C2 - Roll paper holder - Google Patents

Abstract

FIELD: paper holding equipment, in particular, holding devices for rolled toilet paper, paper towels, tickets and other elongated materials.

SUBSTANCE: roll paper holder has slotted tray and toothed knife, and is further provided with insert-cover resting upon roll and fixed so as to apply force to paper roll. Contacting surface of insert-cover is formed as one cylinder or combination of two cylinders having angle of contacting with roll between horizontal plane and tangents at contact site, said angle of contacting increasing as diameter of roll is reducing, yet said angle being greater than self-braking angle. There is elastic ribbed insert between slot and knife.

EFFECT: convenient usage by healthy people and as well as by single-arm invalids and unhealthy people.

8 cl, 4 dwg

Description

The invention relates to paper holders and is intended for toilet paper, paper towels, coupons in line, tickets at the box office, and allows the use of one hand, that is, people with disabilities and sick people.

Known roll paper holder, consisting of a tray with a slit and a serrated knife (patent US 2132177, 10/04/1938). This device is accepted as the closest analogue. The well-known holder is not convenient to use, since it does not provide constant force to pull the paper out of the slot, which does not allow it to be used by people with disabilities and sick people.

An object of the present invention is to provide a roll paper holder that is convenient for use by both healthy people and people with disabilities, providing a constant pulling force of paper, independent of whether the whole roll is in the holder or a small remainder thereof.

This problem is solved due to the fact that the roll paper holder, consisting of a tray with a slot and a serrated knife, has an insert-lid resting on the roll and secured with pressure on the roll, and its contact surface is a cylinder or a combination of two cylinders, the angle the contact of which with the roll between the horizontal and the tangents at the point of contact increases with decreasing roll diameter, but remains larger than the self-braking angle, while there is an elastic ribbed insert between the slot and the knife. In addition, the problem has been solved due to the fact that the angle of inclination of the bottom of the tray increases closer to the slit, divisions are applied on the side surface of the insert-cover, and there is a recess for small things on the upper surface.

The problem is solved due to the fact that the holder has a pivotally located lever or two onward levers with the load resting on the roll, the lever exits through the slot in the front surface or through the hole in the side surface of the tray to the outside and is located near the divisions deposited on the surface of the tray, the holder has a spring-loaded foot clamping the paper tape, the foot has the form of a lever on which, in the direction opposite to the direction of the spring force, the paper roll acts with its weight, and the knife is directed in the same to the side as the gap, ± 30 degrees.

To ensure the approximate constancy of this effort, more precisely, to limit the fluctuations of this effort within the specified limits, several design options are possible.

Four designs are considered that implement the four basic principles of such devices that are most applicable in practice.

Option 1. It implements the principle of changing the direction of the pressing force under the action of the dead weight of the roll while reducing the diameter of the roll - the principle of jamming. To do this, the angle of inclination of the bottom of the tray should increase on one side or on both as it approaches the gap, but remain less than the angle of self-braking. That is, the bottom is not flat and not concave, but convex or biconvex.

Option 2. It implements the principle of creating constant additional friction by pressure on the roll with the weight of the cargo, for example, a cover. For this, the liner-cover is fixed relative to the tray with the possibility of lowering down, for example, sliding in the guides, or lever, parallelogram, pantograph, rocker or other mechanism. Moreover, the bottom of the liner-cover is one or two cylinders, bent so that as the diameter of the roll decreases, press it harder against the wall of the tray or clamp it together. At the same time, divisions are applied on the side surface of the liner-cover, and on the top there is a recess for small things.

Option 3. It implements the principle of creating alternating additional pressure on the roll, for example, by a lever with a load or a spring-loaded lever / or two counter levers /. In this case, the pressure when reducing the diameter of the roll can be progressive in nature, for example, by increasing the angle of inclination of the lever relative to gravity or relative to the force of the spring, as well as by displacing the roll as its diameter decreases closer to the axis of the lever and the resulting redistribution of forces. To indicate the remainder of the paper, the lever can exit through a slot in the front or through an opening in the side / to the axis / wall of the tray and go past the marks on the wall of the tray.

Option 4. It implements the principle of exerting additional pressure on the paper tape emerging from the gap. For this, the holder may have a spring-loaded foot (s) / clamping paper in the slots. In order for the pressing force to increase as the weight of the roll decreases, the foot has the form of a lever, which is spring-loaded from below, and the roll lies on top of it, and the profile of the slit and foot is such that the paper tape is clamped when the lever moves up.

Options can be used in combination: 1 and 2, 1 and 3.

The invention is illustrated by drawings, where Fig. 1 shows a holder for a combination of options 1 and 2, Fig. 2 is a view of the guides, Fig. 3 is a holder for a combination of options 1 and 3, and Fig. 4 is a holder for option 4 .

The holder in figure 1 consists of a tray 1 with an elastic insert 2 and a gear knife 3. Moreover, the working section 4 of the bottom of the tray is lowered to the slit. In the tray along the guides 5, an insert-cover 6 is inserted with a recess for small items 7 and divisions 8 on the front surface, which are an indicator of the remainder of the paper.

The holder works as follows: the paper through the slot in the tray is pulled down at an angle of about 30 °, then it is bent through an elastic gear insert 2, placed on a knife 3, rises up at an angle of about 60 ° to the vertical and comes off with a sliding movement.

After tearing off the previous segment, the remaining part of the tape between the knife 3 and the slit hangs down and is easily grabbed by hand for the next cycle. As the size and weight of the roll decreases, it is pressed by a lowering liner-lid 6 and wedges between the sloping bottom of the tray, its rear wall and the profiled surface of the liner-lid. The wedging increases the pressure on the roll in proportion to the secant of the angle of inclination, and with a correctly selected surface profile, the pulling force of the paper remains approximately constant until 99% of the mass of the full-volume roll and 100% of the roll on the mandrel are used up.

When using the toilet or paper towel, it may be necessary to put out keys from trousers or remove the ring from your finger. For their temporary storage on the upper surface of the liner-cover 6 there is a recess 7.

There are two ways to install the roll, that is, two directions of its rotation. The direction of the TH in figure 1 is more suitable for thin paper, the direction of the TL - for thick.

The holder in figure 3 consists of a tray 1 with a lever 10 with a load of 11 at the end. As the paper is consumed, the lever 10 lowers and the pressure from the load 11 increases in proportion to the sine of the angle of deviation from the vertical. In addition, as the diameter decreases, the roll shifts closer to the gap and, due to the reduction of the lever arm 10, the force on it increases even more. This provides an approximate constancy of the pulling force.

The holder in FIG. 4 consists of a tray 1 with a lever 12 spring-loaded with a spring 13. The lever forms a closing gap 14 with the back wall of the tray.

A full roll weakens the action of the spring 13, possibly right up to its opening / to make it easier to install the roll /. As the mass of the roll decreases, its friction against the lever and the back wall of the tray decreases, but the clamping force of the paper tape in the slot 14 increases. By selecting a spring, an approximate constancy of the pulling force can be ensured.

The use of the holder will provide greater convenience for healthy people and make it possible to use it with one-armed people with disabilities and sick people.

Claims (8)

1. The roll paper holder, consisting of a tray with a slit and a serrated knife, characterized in that it has an insert-lid resting on the roll and secured with the possibility of pressure on the roll, and its contact surface is a cylinder or a combination of two cylinders, the contact angle which with the roll between the horizontal and the tangents at the point of contact increases with decreasing roll diameter, but remains larger than the self-braking angle, while there is an elastic ribbed insert between the slot and the knife. 2. The holder according to claim 1, characterized in that the angle of inclination of the bottom of the tray increases closer to the slit. 3. The holder according to claim 1, characterized in that on the side surface of the liner-cover there are marks, and on the upper surface there is a recess for small items. 4. The holder according to claim 1, characterized in that it has a pivotally located lever or two oncoming levers with a load resting on a roll. 5. The holder according to claim 4, characterized in that the lever extends through a slot in the front surface or through an opening in the side surface of the tray to the outside and is located near the marks applied on the surface of the tray. 6. The holder according to claim 1, characterized in that it has a spring-loaded foot that clamps the paper tape. 7. The holder according to claim 6, characterized in that the foot has the form of a lever, on which, in the direction opposite to the direction of the spring force, the paper roll acts by its weight. 8. The holder according to claim 1, characterized in that the knife is directed in the same direction as the gap ± 30 °.

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