JP6403248B2 - Roll paper dispenser - Google Patents

Description

  The present invention relates to a roll paper dispenser obtained by winding a paper sheet such as a belt-shaped paper towel into a roll, and more particularly to a roll paper dispenser that automatically unwinds and discharges a predetermined length of roll paper.

  A roll paper dispenser, for example, feeds paper from roll paper that is rotatably supported inside the housing, and exposes the roll paper of a necessary length from a paper discharge port so that it can be cut (patent) Reference 1).

  In this type of roll paper dispenser, the sensor detects that the user's hand has been positioned within the detection range, and the paper is fed out of the roll paper that is rotatably supported inside the housing. There is an automatic paper discharge type that automatically discharges an appropriate length of paper from the paper discharge port and enables cutting.

  The automatic paper discharge type roll paper dispenser is also referred to as an auto dispenser, a hands-free dispenser, or the like.

JP 2012-139455 A JP 2013-223598 A

  However, as in Patent Document 2, it is presumed that the conventional paper is related to a form that hangs down through the lower discharge port, but the sheet is cut from the conventional roll paper dispenser. For each user, depending on how to cut, there is a problem that a cutout is left and a sheet is clogged at the discharge port.

  Accordingly, a main object of the present invention is to provide an automatic paper discharge type roll paper dispenser capable of preventing or suppressing uncut portions and sheet clogging at a discharge port.

  The present invention that has solved the above problems is as follows.

[Invention of Claim 1]
A roll paper dispenser that receives a paper feed signal and automatically ejects a predetermined length of paper from the roll paper,
A paper discharge feeding roller and a nip roller facing the paper discharge roller are provided, and the paper discharged from the roll paper is discharged while hanging downward, passing between them.
Opposite to the hanging paper, a fixed cutter blade is provided at the front of the dispenser with its cutting edge facing the back side,
A guide is provided in the dispenser, the guide extending to the front side at least over the height direction range below the blade edge, and guiding the paper forward ; and
The roll paper dispenser , wherein the guide is configured such that the paper is substantially in contact with the cutting edge in a state where the feeding is finished by the feeding roller .

(Function and effect)
In the present invention, the dispenser is provided with a guide that extends downward at least in the height direction range below the blade edge and leads the paper forward. As a result, the paper is guided along the guide extending forward, and as a result, the front end of the paper is automatically discharged to the leading edge of the guide or the length further advanced, so the user holds the front end of the paper, Instead of pulling downward or diagonally forward, it pulls forward.
From the results of the experiment, it has been found that there are many users who pull the paper forward, and in fact, because there are many such users, it has been found that the remaining pieces of paper can be prevented or suppressed.

When the guide is configured so that the paper is substantially in contact with the cutting edge in the state where the feeding has been completed, that is, if the shape, dimensions, mounting position, etc. of the guide are set, For this reason, when the paper is pulled forward, the entire width direction of the paper is always substantially in contact with the blade edge, so that the remaining portion of the paper can be prevented or suppressed.
As in the case of the conventional example, when the paper is in a state of hanging down from the blade edge, the user should pull it so that the tip of the paper hits the blade edge, and then pull it forward strongly. For this reason, the present inventor has found out that it is easy for uncut portions to occur, in the process of reaching the present invention.
On the other hand, since the paper is substantially in contact with the blade edge in the state where the feeding is finished, it means that the paper does not wobble to the back side. Can be prevented or suppressed. Further, it is possible to easily cut without requiring excessive force for cutting.

[Invention of Claim 2 ]
The roll paper dispenser according to claim 1 , wherein a leading edge of the guide is located forward of the cutting edge.

(Function and effect)
Accordingly, the paper feeding portion, the blade edge, and the leading edge of the guide always have an obtuse angle, and the paper comes into contact with the blade edge, so that the operational effect of claim 1 or claim 2 can be further manifested.

[Invention of Claim 3]
The roll paper dispenser according to claim 1 or 2 , wherein the discharge surface of the guide has a shape in which a height range below the cutting edge draws a uniform curve.

(Function and effect)
If the discharge surface of the guide has a shape that draws a uniform curve, automatic paper discharge is smooth.

According to the present invention, uncut, the sheet jam at the discharge port can be prevented or suppressed.

It is a perspective view from the bottom face side of the dispenser for roll paper which concerns on this invention. It is a perspective view from the upper surface side of the dispenser for roll paper which concerns on this invention. It is an internal structure side view which shows typically the internal structure example of the dispenser for roll paper which concerns on a prior art example. It is an internal structure side view which shows typically the internal structure example of the dispenser for roll paper which concerns on this invention. It is a perspective view for showing the example of the attachment mode of the roll paper in the dispenser for roll paper concerning the present invention. It is an internal front view which shows the example of the paper discharge mechanism which concerns on this invention. It is a side view for demonstrating the detection range example of the optical sensor which concerns on this invention. It is an expanded side view of the internal structure which shows typically the internal structure example of the dispenser for roll paper which concerns on this invention. It is the side view further expanded. It is an expanded side view of the internal structure which shows typically the internal structure example of the dispenser for roll paper which concerns on this invention which differs in the shape of a guide.

  Next, an embodiment of the present invention is shown in FIGS. 1, 2, and 4 to 7, and will be described in detail below with reference to this.

  A roll paper dispenser 100 according to the present invention (hereinafter also simply referred to as dispenser 100) is for roll paper in which a long strip of roll paper is wound around a paper tube to form a roll. The roll paper itself is not particularly limited, and those for known hand-wiping are used.

  The dispenser 100 according to the present embodiment includes a support portion 30 that rotatably supports the roll portion 20 of the roll paper 2 inside a housing 1 whose material is formed of a synthetic resin such as ABS resin or a metal material, for example. , A rotatable paper delivery roller 4 that nips the roll paper 20A fed from the roll portion 20 and a nip roller 5 opposed to the roll paper 20A, and a drive source such as a motor that drives the paper delivery roller 4 ( (Not shown) and batteries 7 and 7 serving as power sources for operating the driving source and the optical sensor 50 are arranged.

  In response to detection of an object to be detected (for example, a user's hand) by the optical sensor 50, electric power is supplied from the battery 7 to the drive source, and the delivery roller 4 for paper discharge is rotated. A roll paper 20 </ b> A with an appropriate length is discharged from a paper discharge port 6 disposed at the lower part of the housing 1 in a state where it is automatically exposed outside the housing 1.

  The housing 1 is composed of a case main body 10 that is open to the front and a lid body 11 that covers the front open portion of the case main body 10, and is drawn out from the roll paper 2 supported by the support portion 30 at the lower part. A slit-shaped paper discharge port 6 is provided for exposing the rolled paper 20A to the outside of the housing.

  The case main body 10 includes a top plate portion 12, a bottom plate portion 13, a back plate portion 14, and a pair of left and right main body side plate portions 15 and 15 extending forward from both side edges or both side edges of the back plate portion 14. The dispenser 100 of this embodiment is installed with the back plate portion 14 of the case body facing a wall surface or the like.

  The lid 11 includes a front plate portion 16 that forms a front surface of the dispenser and has a curved surface portion that forms a series with the top plate portion 12 of the case body 10, and a right angle with the front plate portion 16. And a pair of left and right lid side plates 17, 17 extending on the side (back plate side), arranged so as to cover the front side open portion of the case body 10, and a box-shaped housing together with the case body 10 1 is constructed.

  The lid body 11 is attached to the case body 10 in a hatched manner via a shaft 10A. In the dispenser 100 of this embodiment, the lid body 11 is pulled down toward the front as shown by a one-dot chain line in FIG. As a result, the case main body 10 is opened to the front, and internal mechanisms such as the support portion 30 and the paper delivery roller 4 inside the housing are exposed, and the roll paper 2 can be replaced. In the illustrated embodiment, when the hatch type is used, the case body 10 and the lid body 11 are connected to each other via a rotation shaft provided at the lower part of each side plate portion 15, 17, and formed on the upper surface of the case body 10. The front opening portion of the case main body 10 is closed by the lid body 11 by the engagement between the stopper protrusion 18 and the engagement recess 19 formed on the upper surface of the lid body 11.

  Note that the structure and appearance of the housing are not limited to those described above.

  On the other hand, the paper discharge port 6 is provided in a slit shape so as to extend in the width direction of the housing at the lower surface portion of the housing 1. In the illustrated example, in particular, the front side of the bottom plate portion 13 of the case body 10 A paper discharge port 6 is formed between the edge and the lower edge of the lid 11. Note that the paper discharge port 6 is not limited to the above form, and for example, a bottom plate portion may be provided on the bottom plate portion 13 or the lid body 11 of the case body 10 and formed there.

  On the other hand, in the dispenser 100 of this embodiment, the roll paper 20A fed out from the roll paper 2 is exposed from the paper discharge port 6, and the cutter blade 60 is provided along the front side edge of the paper discharge port 6 so as to facilitate cutting. Installed. In the illustrated example, the cutter blade 60 is a saw blade, but is not limited thereto. The cutter blade 60 can be formed of metal or hard resin.

  The support part 30 of the roll part 20 of the roll paper 2 accommodated in the housing | casing 1 can take a known structure. In the form shown in the figure, it has a pair of arm portions 31, 31 extending from the vicinity of both side plates of the back plate portion 14 toward the front plate side (the front side when the wall surface is mounted), respectively, by a predetermined length. Supports 32 and 32 are attached to the tips of 31 and 31. The arm portions 31, 31 are not limited to the illustrated example, and the arm portions 31, 31 may extend from the main body side plate portion 15 so as to protrude in the horizontal direction, or may hang down from the top plate portion 12. Alternatively, it may stand up from the bottom plate portion 13 toward the top plate portion 12.

  Further, the support portion of the illustrated example has the support bodies 32, 32 projecting inward in the horizontal direction at the inner side of the housing in a normal state, and at least one of them is biased to the normal state, With the base end portion as an axis, it is configured to jump upward as indicated by a one-dot chain line A in FIG. Further, the distance between the tips 32t and 32t of the pair of support bodies 32 and 32 is set to a distance less than the length (width) of the paper tube of the roll portion 20 of the roll paper 2 in the normal state, and the tips 32t and 32t are upwards. The distance between the front ends 32t and 32t of the support is wider than the width of the roll paper 2 when it jumps up. When the roll paper 2 is attached, the roll 32 is inserted between the supports 32 and 32 with the support 32 being flipped up, and then the support 32 is returned to the normal state position by urging. 32t and 32t are positioned in the paper tube, and the roll portion 20 of the roll paper 2 is supported by the supports 32 and 32.

  On the other hand, the dispenser 100 according to the present embodiment includes a rod-shaped rotating shaft 40 arranged so as to be parallel to the axis when the roll portion 20 of the roll paper 2 is attached to the support portion 30, and the outer periphery of the rotating shaft 40. .., And a nip roller 5 paired therewith is provided below the support 32. The paper discharge payout roller 4 has a structure in which a plurality of rolls 41, 41,. It is provided in the vicinity of the paper discharge port on the (bottom plate side), and the roll paper 20A fed from the roll portion 20 is sandwiched between the paper discharge feed roller 4 and the nip roller 5, and the paper discharge feed roller 4 The roll paper 2 is discharged from the discharge outlet 6 by the rotation.

  In the dispenser 100 of the present embodiment, the paper discharge payout roller 4 has a structure in which a plurality of rolls 41, 41,... 4 The overall weight is reduced to save power. Further, by providing the rolls 41, 41,... Intermittently in the width direction, the pressure with which the rolls and the paper strikes increases, and a predetermined amount of sheet length can be suitably obtained without slipping.

  In particular, the rolls 41, 41... Are arranged densely in the center in the width direction and sparsely spaced on the side, so that the nip pressure at the side is weakened during paper discharge, and the tension easily escapes to the side. Therefore, it is preferable that wrinkles do not easily enter during paper discharge. The configuration of the discharge roller 4 and the number of rolls 41 are not limited to this.

  Further, in the dispenser 100 of the present embodiment, the paper discharge feeding roller 4 is attached to the case body 10 and the nip roller 5 is attached to the lid body 11, and when the lid body 11 is opened, The discharge roller 4 and the nip roller 5 are separated from each other, and the nipping of the roll paper 2 is released, improving the maintainability.

  On the other hand, in the present embodiment, the paper discharge feeding roller 4 is driven by a driving force from a driving source (not shown) via a driving gear 42 provided on one end side of the rotating shaft 40 (right hand side in the illustrated example). Is transmitted and rotated. The driving source is a known motor or the like, and driving and stopping are performed by stopping and starting the supply of electric power according to the detection signal from the optical sensor 50.

  However, the structure for driving the discharge roller 4 is not limited to the configuration via the drive gear 42, and the rotary shaft 40 is rotated by appropriately interposing a known mechanism such as a gear, an endless belt, and a pulley. You may do it. Further, the rotating shaft 40 may be directly connected to the rotating shaft of the motor coaxially and rotated.

  The paper discharge mechanism is not limited to the above-described embodiment. For example, a feed roller that is in contact with the roll portion or a support portion that supports the roll portion may be rotated by a driving source.

  On the other hand, the optical sensor 50 according to the present embodiment is a known optical human sensor or motion sensor that detects that an object to be detected is positioned in the detection range.

  The optical sensor 50 may employ visible light or invisible light as the detection light, or may be an active type that requires irradiation light from a light source separately from the sensor. Alternatively, it may be a passive type that does not require irradiation light.

  However, a passive type that does not require a light source is desirable because it is advantageous in terms of power saving. Since the active type needs to emit light, the sensor body inevitably tends to be large and the power consumption increases.

  A more specific and preferable example of the optical sensor 50 is a pyroelectric sensor, particularly a pyroelectric infrared sensor. The pyroelectric infrared sensor receives infrared light emitted from a heating element when the heating element is positioned in the detection range, and detects an energy difference from a steady state. Such a dispenser 100 is particularly suitable for a general usage mode, that is, a mode in which a user holds a hand, which is a heating element, over a detection range and discharges paper. In addition, this form of illustration is an example using this pyroelectric infrared sensor preferably.

  On the other hand, in the dispenser of the present embodiment, the optical sensor 50 is attached so that the light receiving portion 51 is exposed to the front plate portion 16 so as to be visible, and the user has to use his hand to operate the paper discharge mechanism. The position of the optical sensor 50 to be held can be intuitively confirmed. Although the size of the exposed portion is not particularly limited, it is easy to intuitively visually recognize the position of the optical sensor 50 when the length is about 6 to 10 mm and the width is about 12 to 15 mm.

  A more preferable limited position of the optical sensor 50 is a range of about 5 cm from the center in the width direction on the front of the dispenser 100 to the left and right in that the influence of the dominant hand and the installation location is small. Moreover, about a height direction, a user is the most easy to visually recognize that it is around 5 cm up and down from the center of a height direction. That is, from the viewpoint of the dominant hand, the degree of freedom of installation, and the visibility, it is the central portion in the range of about 5 cm from the center in the width direction and height direction of the front of the dispenser.

  However, since it is not desirable to hold the wet hand after hand washing too high, depending on the installation location, it is on the bottom plate part side 13 from the middle position in the height direction of the front plate part 16 and from the center in the width direction. A central lower portion of the front surface of the dispenser 100 in a range of about 5 cm to the left and right is also a suitable position. Further, when the lower center portion is formed in this way, there is an advantage that the hand can be easily moved smoothly from the position where the hand is held to the roll paper 20A fed out from the paper discharge port 6 on the bottom surface.

  In addition, in order to make the recognition of the position of the optical sensor 50 more reliable, information such as text or symbols such as arrows that specifically indicate the position of the sensor or the position where the hand is held is printed on the surface of the front plate portion 16. It is good to provide.

  On the other hand, in the optical sensor 50 according to the present embodiment, the detection distance is in the range of 0 to 100 mm, more preferably in the range of 0 to 50 mm from the optical sensor of the front plate portion 16 (this range is indicated in FIG. 7). Shown as L1). When the user performs an operation of holding his / her hand, the hand is mostly positioned within a range of 0 to 50 mm from the optical sensor 50. In addition, the distance L1 is a distance from the front plate portion 16, but normally, the distance L1 does not approach within 100 mm from the front of the dispenser 100. Absent.

  In the optical sensor 50, the radiation angle ∠A in the detection range is preferably about 30 to 90 °. If it is less than 30 °, the detection range is too narrow, and exceeding 90 ° does not make sense.

  The dispenser 100 of this embodiment is provided with the optical sensor 50 at the predetermined position, and when an object to be detected such as a user's hand enters the detection range of the optical sensor 50, the optical sensor 50. This is detected, this detection signal is transmitted to the control means, and the drive source of the paper delivery roller 4 is driven for a predetermined time via the control means. As a result, the roll paper 20A fed out from the paper discharge outlet 6 is exposed by the amount of rotation of the paper discharge feeding roller 4 corresponding to the drive time of the drive source.

  Control means for controlling the drive of a drive source such as a motor means in accordance with a detection signal detected by the optical sensor 50 according to the present embodiment is not particularly limited, and can be configured by an appropriate electric circuit.

  In the dispenser 100 of this embodiment, the power sources for operating the optical sensor 50 and the delivery roller 4 are the batteries 7 and 7.

  In this type of automatic paper discharge type dispenser, the voltage of about four dry batteries, that is, around 6.0 V is usually used to drive the drive source of the paper discharge feeding roller 4 and the optical sensor 50. The automatic paper discharge type dispenser of the present embodiment can be operated at approximately 4.2 to 6.0 V due to the power saving of the optical sensor 50. Therefore, in consideration of the size of the dispenser and the like, it is desirable to use four single-standard batteries that have a large capacity and are easily available.

  In the dispenser of the present invention, the power source is not limited to a battery, and a commercial power source may be supplied from an outlet along with driving a dry battery by an AC adapter or the like. Further, the battery according to the present invention may be a rechargeable battery that can be used repeatedly in addition to a dry battery.

<Specific example>
Specific examples of the present invention are shown in FIGS. 4 and 8 to 10.
That is, a roll paper dispenser 100 that receives a paper feed signal and automatically discharges a predetermined length of paper from the roll paper, and is provided with a paper discharge feeding roller 4 and a nip roller 5 opposed thereto. The paper 20A fed out from the roll paper passes between these and is discharged while hanging downward.
Furthermore, the cutter blade 60 is provided at the front part of the dispenser 100 with the blade edge facing the back side, facing the sagging paper, and at least across the height direction range below the blade edge, the lower part is on the front side. A guide 80 (81) that extends and guides the paper 20A forward is provided in the dispenser.

  Here, as clearly shown in FIGS. 8 to 10, the paper is fed from the paper roll, guided along the guide 80 (81), and the paper is substantially fed to the blade edge in a state where the feeding is finished. It is desirable that the guide 80 (81) is configured so as to be in contact with each other.

  The tip edge of the guide 80 (81) is preferably located in front of the cutting edge as shown.

  As shown in FIGS. 8 and 9, the discharge surface of the guide 80 preferably has a shape that draws a uniform curve in the height range below the blade edge.

The guide 80 may have a plate shape or a block shape with a discharge surface having a predetermined shape, but may be bent in an L shape or a “<” shape. FIG. 10 shows an example of the guide 81 bent into an L shape.

<Experimental example>
Guides 80 and 81 shown in FIGS. 9 and 10 were prepared, and various evaluations were performed under comparison with conventional examples. Experiments are based on randomly selected employee ratings.

The dimensions shown in FIGS. 9 and 10 refer to the following values.
A: Vertical height of the paper guide B: Distance from the bottom of the paper guide body
C: Bending angle of paper guide
D: Length of the paper guide E: Height from the bottom of the dispenser body to the paper guide tip F: Paper discharge angle G: Distance from the cutter blade edge to the paper guide tip

As shown in the summary rank table 1 of the evaluation results.

The evaluation of “sheet discharge” was ○: smooth, Δ: normal, ×: bad. The “stopper effect” means the following.
In the present invention, it is preferable that a paper of a predetermined length is automatically discharged from the roll paper in response to a paper feed signal, that is, the leading edge of the paper is automatically discharged to the leading edge of the guide. When the paper is automatically discharged to the leading edge of the guide and stops there, it is easy to take out the next piece of paper. The automatic paper discharge to the leading edge of the guide and the stop there are called “stopper effect”.

  Note that a paper of a predetermined length may be automatically discharged from the roll paper in response to a paper feed signal, that is, the leading edge of the paper may be automatically discharged beyond the leading edge of the guide.

The evaluation results are shown in Table 2.

Mainly from the results of Table 2, the following conditions were determined to be optimal.
A: 10-20mm
B: 15-25mm
C: R20-25
D: 40-45mm
E: 20-25mm
F: 90-105 °
G: 30-50mm

  DESCRIPTION OF SYMBOLS 100 ... Dispenser for roll paper, 1 ... Housing, 2 ... Roll paper, 20 ... Roll part of roll paper 2, 20A ... Paper fed out, 4 ... Discharge delivery roller, 5 ... Nip roller, 6 ... Discharge port 7 ... Battery, 10 ... Case body, 11 ... Cover, 12 ... Top plate, 13 ... Bottom plate, 14 ... Back plate, 15 ... Body plate, 16 ... Front plate, 17 ... Cover plate , 31 ... arm part, 32 ... support, 32 t ... tip of support 32, 40 ... rotating shaft, 41 ... roll, 42 ... drive gear, 50 ... optical sensor, 51 ... light receiving part, 60 ... cutter blade, 80 81 ... Guide.

Claims (3)

A roll paper dispenser that receives a paper feed signal and automatically ejects a predetermined length of paper from the roll paper,
A paper discharge feeding roller and a nip roller facing the paper discharge roller are provided, and the paper discharged from the roll paper is discharged while hanging downward, passing between them.
Opposite to the hanging paper, a fixed cutter blade is provided at the front of the dispenser with its cutting edge facing the back side,
A guide is provided in the dispenser, the guide extending to the front side at least over the height direction range below the blade edge, and guiding the paper forward ; and
The roll paper dispenser , wherein the guide is configured such that the paper is substantially in contact with the cutting edge in a state where the feeding is finished by the feeding roller . The roll paper dispenser according to claim 1 , wherein a leading edge of the guide is located forward of the cutting edge. The roll paper dispenser according to claim 1 or 2 , wherein the discharge surface of the guide has a shape in which a height range below the cutting edge draws a uniform curve.

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