JP2013179950A - Paper cutting plate and roll paper holder with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper cutting plate having a retracted teeth, allowing smooth drawing of roll paper without breaking, and cutting well, and to provide a roll paper holder with the same.SOLUTION: A paper cutting plate 10 for cutting paper drawn out from a paper roll, includes a group 1 of multiple resin teeth formed at the front end of the paper cutting plate 10 at a predetermined longitudinal pitch, the teeth 1a, 1b, ... have a tooth having an end of square shape with two corner parts 14a and 14b when viewed from the front side, and of square shape 14c when viewed from a side, and the tooth has a flat surface 14f on the paper roll side.

Description

  The present invention relates to a paper cutting plate for cutting roll paper such as toilet paper and a roll paper holder provided with the paper cutting plate.

  A roll paper holder that rotatably supports roll paper such as toilet paper is rotatably installed on the holder main body so that a press plate for cutting the roll paper covers the roll paper.

  2. Description of the Related Art In recent years, various types in which a press blade for cutting roll paper and a cutting blade are formed have been proposed. In JP-A-2004-81630, in order to cut the paper drawn from the roll paper, a large number of blades arranged along the front edge of the paper cutting plate are formed of resin, and each blade is A paper cutting board is disclosed that is inclined from the left and right ends of the upper surface that forms a horizontal plane toward the lower paper side when viewed from the front, and has a sharp protrusion at the lower end that pierces the paper. According to this paper cutting board, when cutting the paper, the sharp projections can be first pierced into the paper to create a trigger for starting cutting, and the paper can be cut well without slipping.

  Japanese Patent Application Laid-Open No. 2005-40216 discloses that the rear side of a belt-like blade plate having a shape corresponding to the groove is inserted into a groove cut on the front side of the paper cutting plate, and the blade plate has a comb tooth shape. There is disclosed a paper cutting plate in a roll paper holder in which an elastic blade edge is exposed and positioned from the front side of the paper cutting plate and the strip-shaped blade plate is prevented from coming off from the front side of the paper cutting plate. According to this paper cutting plate, the cut portion can be continuously and lightly cut without impairing the sharpness of the roll paper, and the fingertip is not damaged.

  The paper cutting blades disclosed in Japanese Patent Application Laid-Open Nos. 2004-81630 and 2005-40216 are so-called protruding types that protrude forward from the front end of the presser plate, and impair design and high-quality feeling. Moreover, since it is an elastic blade edge | tip, even if it does not hurt a fingertip, it gave a user discomfort by hitting a fingertip. Therefore, it has been desired to develop a paper cutting tooth that is not a protruding type.

  As a solution to this problem, a roll paper holder disclosed in Japanese Patent Application Laid-Open No. 2009-261649 is known. In this roll paper holder, a large number of cutting blade protrusions having an inverted triangular cross section in contact with the roll paper are formed at a predetermined pitch in the width direction on the back surface of the front end portion of the presser plate. Since this paper cutting blade is attached to the back surface of the presser plate, it is not a protruding tooth type but a retracting tooth type, and has a low probability of hitting the user's fingertip, which is convenient.

JP 2004-81630 A Japanese Patent Laying-Open No. 2005-40216 JP 2009-261649 A

  However, the paper cutting blade disclosed in Japanese Patent Application Laid-Open No. 2009-261649 is a retraction tooth type, and although the chance of direct contact with hands and fingers is reduced, the cutting blade protrusion having an inverted triangular cross section hits the roll paper. When pulling out the roll paper, there was a problem that the roll paper was partially torn and inconvenient to use.

  Accordingly, an object of the present invention is to provide a paper cutting board that can be pulled out smoothly without breaking when the roll paper is pulled out in the retracting tooth mold, and a roll paper holder including the paper cutting board.

  In such a situation, as a result of intensive studies, the inventor of the present invention can smoothly pull out the roll paper without breaking the roll paper and has excellent sharpness if the blade shape of the paper cutting plate is a specific shape whose surface is the roll paper side. As a result, the present invention has been completed.

  That is, the present invention is a paper cutting plate for cutting paper drawn from roll paper, and includes a resin blade group formed at a predetermined pitch along the longitudinal direction at the front end portion of the paper cutting plate. Each blade has a square shape with two corners at the front end of the blade, a square shape in the side view, and a roll paper side of the blade is a surface. Is to provide.

  Further, the present invention is a roll paper holder comprising a presser plate that is openable and closable with a rear part as a support shaft and covers the roll paper with respect to a holder body that rotatably holds the roll paper, and the front end portion of the presser plate A roll paper holder is provided, wherein the paper cutting plate is attached to the back surface of the paper.

  According to the present invention, since the roll paper side of the blade has a surface shape when pulling out the roll paper, it can be pulled out smoothly without breaking. Moreover, since the angle which pulls out roll paper upwards at the time of cutting | disconnection is small (nearly horizontal), it can cut | disconnect easily also for the elderly. Moreover, although it is an elastic blade, the sharpness is excellent due to the edge effect of the blade. Further, the paper cutting blade is attached to the back surface of the pressing plate, and is not visible to the user or difficult to see, and can give a high-class feeling.

It is a perspective view of the paper cutting board in the embodiment of the present invention. (A) is a side view of the paper cutting board of FIG. 1, (B) is sectional drawing cut | disconnected in the center of the longitudinal direction. It is a partial enlarged front view of the paper cutting board of FIG. It is a partial expanded bottom view of the paper cutting board of FIG. It is the elements on larger scale of the paper cutting board in other embodiment. (A) And (B) is an expanded sectional view of the front-end | tip part of the paper cutting board in other embodiment. (A) is the elements on larger scale of the paper cutting board in other embodiment, (B) is the elements on larger scale bottom view of the paper cutting board in other embodiment. It is a simplified diagram of a roll paper holder in an embodiment of the present invention. It is the elements on larger scale of the roll paper holder of FIG. It is sectional drawing of the roll paper holder of FIG. It is a partial expanded sectional view of the roll paper holder of FIG. (A)-(D) are the partial expansion simplified views of the roll paper holder of other embodiment, respectively. It is a perspective view of the paper cutting board in other embodiment of this invention.

  A paper cutting board according to an embodiment of the present invention will be described with reference to FIGS. In the present specification, “front”, “front”, and “rear” refer to directions viewed from the user side. FIG. 1 is a perspective view of a paper cutting plate as viewed obliquely upward from below, where X is the front side, Y is the rear side, and the lower side is the roll paper side. The paper cutting plate 10 cuts the paper drawn from the roll paper, and includes a resin blade group 1 formed in a large number at a predetermined pitch along the longitudinal direction at the front end portion of the paper cutting plate 10. Each of the blades 1a, 1b, 1c,... Has a square shape with two corners (edges) 14a and 14b in the front view shape of the blade tip, and has a square shape 14c in the side view shape. The paper side is the surface 14f, which is a plane in this example (see FIGS. 2A and 2B). The blade group 1 includes blades 1a, 1b, 1c,..., And each blade has the same shape and the same pitch. Each blade 1a, 1b, 1c,... Is hereinafter simply referred to as “blade 1a”. In FIG. 3, the lower end of the core material 3 a is shown as a horizontal line, but the lower end of the blade 1 a is a line drawn by reference numeral 11.

Since the front view shape of the tip of the blade 1a is a shape formed by connecting the two vertical lines 12 and 13 and the horizontal line 11 to the tip, the two corners 14a and 14b (inner angle α ₁ ) are substantially perpendicular. Or a right angle. As shown in FIG. 4, since the bottom view shape of the tip of the blade 1a is a shape formed by connecting two parallel straight lines 16 and 17 and the tip of the horizontal line 11, two corners 14d and 14e ( The inner angle is substantially a right angle or a right angle (FIG. 3). Moreover, the square shape 14c of the side view shape of the blade 1a is substantially right angle or right angle in this example (FIG. 2B).

  That is, the blade group 1 is formed by arranging a large number of non-through grooves in which the lower surface 152 and the front surface 151 are opened at the front end of a medium-sized plate having a predetermined thickness whose front lower end is a corner. In addition, the blade group 1 of this invention is not limited to what was formed from this non-through-groove, and may be formed from the up-and-down through-groove which an upper and lower surface and a front surface open. Although the strength of the blade group formed by the upper and lower through grooves is slightly lower than that of the blade group formed by the non-through grooves, the effect obtained by the present invention is the same. In addition, in the case of the vertical non-penetrating groove, the upper surface of the blade group 1 is a top plate surface that is continuous in the left-right direction. In FIG. 1, the code | symbol 24 is an upper surface used as the attachment side (the back surface side of the push board 21a), and the code | symbol 25 is the surface (back surface) used as the roll paper side.

The width (w ₁ ) of the blade 1a is 1.0 to 2.0 mm, preferably 1.2 to 1.7 mm, particularly preferably 1.4 to 1.6 mm, and exists between the two blades 1a and 1b. The width (w ₂ ) of the groove is 1.0 to 2.0 mm, preferably 1.2 to 1.7 mm, and particularly preferably 1.4 to 1.6 mm. The height (h) and depth length (l) of the blade 1a are preferably 1.4 to 3.6 mm, and the blade pitch in the blade group 1 is 2.0 to 4.0 mm, preferably 2 .4 to 3.4 mm, particularly preferably 2.8 to 3.2 mm. If the width of the blade 1a (w ₁ ) or the width of the groove (w ₂ ) is too large, the blade pitch becomes large, and the cut surface of the paper surface becomes rough and rough, whereas if it is too small, the paper is cut. The catch of is worse. In addition, the surface 14f on the roll paper side of the blade 1a is a rectangular plane in this example, and the surface on the roll paper side of the blade group 1 has intermittent recesses (rectangular grooves). The surface 14f is flush. Thereby, the roll paper A is pulled out smoothly without being torn. The surface 14f on the roll paper side of the blade 1a is not limited to a flat surface, and may be a slightly concave surface. Even on a concave surface, the edge effect is produced.

  The blade 1a and the blade group 1 are resin-made elastic blades. Thereby, even if a finger or a hand touches the edge of the blade 1a, there is no injury. As the resin exhibiting elasticity, one having a Shore hardness of 80 to 90 is suitable. Examples of such resins include silicone resins, polyurethane resins, vinyl chloride resins, ethylene vinyl acetate copolymers, EEA resins, thermoplastic polyurethane elastomers, and thermoplastic elastomers.

  Further, it is preferable that the entire paper cutting plate 10 is made of resin. In this example, the paper cutting plate 10 is made of two kinds of resins having different hardnesses, and the blade group 1 is a soft resin. That is, the paper cutting plate 10 of this example includes a core portion 3a that is a central portion and a portion 3b other than the core portion 3a. The part 3b other than the core part 3a includes a blade group part 21 and a peripheral part 22 surrounding the core part 3a, and uses a softer resin than the core part 3a. In addition, in this example, the peripheral part 22 surrounding the blade group part 21 and the core part 3a is the same soft resin integral. Usually, the width dimension of the push plate 21a of the roll paper holder 20 is larger than the width dimension of the roll paper A because it is necessary to completely cover the roll paper A. On the other hand, the width dimension (longitudinal dimension) of the blade group 1 of the paper cutting plate 10 may be the same as or slightly larger than the width dimension of the roll paper A. Therefore, the paper cutting plate 10 needs to have a certain thickness to form the blade group 1, but may be the same as or slightly larger than the width dimension of the roll paper A. In the paper cutting board 10, the resin used for the core 3 a has a higher hardness than the soft resin used in the blade group 1, and examples thereof include nylon and ABS resin.

  As a method of producing the paper cutting board 10 from two kinds of resins having different hardnesses, two kinds of resins having different hardnesses are produced separately, and both are bonded with an adhesive. For example, a method of integrating two resins by performing double molding using two different types of resins.

  With such a paper cutting board 10, since the blade group 1 is made of a soft resin, even if a finger or a hand touches the edge of the blade 1a, there is no injury. Moreover, the paper cutting board 10 has the core part 3a reinforced with the core material (hard resin), and the adhesion to the pressing board 21a is stabilized. Moreover, as shown in FIG. 2, the lower end of the core part 3a is located slightly below the lower surface 14f of the blade 1a. Thereby, the lower end surface of the core part 3a will contact | abut with the roll paper A, and the drawer | draw-out of the roll paper A becomes smooth. In addition, the position of the lower end surface of the core part 3a is not limited to said form, The lower end of the core part 3a may be located the same as or slightly above the lower surface 14f of the blade 1a. Even in this case, the lower surface (plane) 14f of the blade 1a contacts the roll paper A, and there is no inconvenience such as breaking when the roll paper A is pulled out in the horizontal direction. According to the paper cutting board 10, since the blade 1a for cutting the roll paper A is the cutting edge 14c having a right-angle cross section, an excellent sharpness is achieved due to the edge effect of the blade. In addition, the shape of the lower end surface of the paper cutting board 10 and the shape of the lower end surface of the core part 3a are not limited to the surface shape which becomes slightly convex as shown in FIG. 2, but may be a planar shape.

In the paper cutting board 10, the front view shape (the shape of the opening on the front surface) of the blade tip is not limited to a rectangular shape as shown in FIG. 3, but may be a trapezoidal shape as shown in FIG. That is, in FIG. 5, the shape formed by connecting the horizontal lines 11 to the ends of two longitudinally inclined lines 12 a, 13 a that incline downward toward the bottom is a trapezoid, and the two corners on both sides below (Inner angle α ₂ ) is an acute angle. Even if it is such a blade shape, it has an edge and shows the outstanding sharpness similarly to the blade 1a shown in FIG.

  Moreover, as a shape of the corner | angular part (upper right in the side view) of the groove | channel 15 formed between two blades, in addition to the right-angled shape (FIG. 6 (A)) shown in FIG. )) And an indefinite shape. The shape of the corner at the back of the groove 15 is a part that does not participate in the cutting of the roll paper, and is appropriately determined. Further, the shape of the upper surface of the groove 15 formed between the two blades when viewed from the front may be a circular shape (FIG. 7A) or an indefinite shape in addition to the plane shown in FIGS. . The groove 15 may be a groove penetrating in the vertical direction. Further, the back surface shape 18b of the groove 15 formed between the two blades may be a circular shape (FIG. 7B) or an indeterminate shape in addition to the plane shown in FIG. Such a shape at the back of the groove 15 is a portion not involved in the cutting of the roll paper, and is determined as appropriate.

  As described above, the paper cutting board 10 is not limited to one formed of two types of resins having different hardnesses, and may be formed of one type of resin. In this case, the resin may be either the hard resin or the soft resin. The paper cutting board 10 is attached to the back surface of the pressing plate 21a, and even if it is a hard resin, the probability of touching the hand or finger is small. Even if touched, the paper cutting board 10 will not be injured unlike metal. Absent.

  The shape of the paper cutting plate 10 is not limited to a shape that is slightly convex upward as shown in FIG. 2, and may be, for example, a plate shape or an indefinite shape as long as the blade group 1 is formed. . A roll paper holder in which the shape of the paper cutting plate 10 is a shape that is slightly convex upward in a side view, and the shape of the push plate 21a is a shape that is slightly convex upward in a similar side view. Suitable for. When the paper cutting plate 10 has a rectangular shape in a side view, the back surface of the pressing plate 21a is suitable for a roll paper holder having a planar shape. That is, when the paper cutting plate 10 has a rectangular shape when viewed from the side, the surface of the paper cutting plate 10 on the roll paper side is preferably a flat surface.

  A roll paper holder according to an embodiment of the present invention will be described with reference to FIGS. The roll paper holder 20 of the present example includes a presser plate 21a that can be opened and closed with the rear portion as a support shaft 23a and covers the roll paper A with respect to a holder main body 22a that rotatably holds the roll paper A. The paper cutting plate 10 is attached to the back surface 211 of the front end 24a of the pressing plate 21a. As shown in FIG. 11, the front end 18 of the blade 1a of the paper cutting plate 10 is located slightly rearward from the front end 212 of the presser plate 21a. Accordingly, the possibility that the user's hand or finger touches the blade group 1 is reduced, and the paper cutting plate 10 is not visible to the user or is difficult to see, and hinders the design of the roll paper holder 20. There is nothing. It should be noted that the front end 18 of the blade 1a of the paper cutting plate 10 may be the same (same) as the front end 212 of the presser plate 21a at the position in the front-rear direction.

  As a method of attaching the paper cutting plate 10 to the back surface of the front end portion 24a of the presser plate 21a, for example, a method of sticking with a double-sided tape, a method of bonding with an adhesive, and an integral molding of the presser plate 21a and the paper cutting plate 10 are integrated. The method of making it.

  Next, the cutting action of the roll paper A by the paper cutting plate 10 in the roll paper holder 20 will be described. First, the roll paper A is pulled out. In the roll paper holder 20, since the core 3 a of the paper cutting plate 10 is in contact with the roll paper A, when the roll paper A is pulled out, it is not broken. Further, even when the roll paper A is pulled out slightly upward in the forward direction, the roll paper A side of the blade 1a is the surface (flat surface) 14f, and thus it is not broken.

  The drawn roll paper A is pulled slightly upward at the cutting position. At this time, the corner portion (edge) 14a (14b) of the blade 1a of the roll paper A and the paper cutting plate 10 hits. In this state, since the roll paper A is pulled in the cutting direction (lateral direction), it is cut at the first edge, and is successively broken by the edge 14a (14b) of the blade encountered. Although the blade 1a has a rectangular shape when viewed from the front and the tip is not pointed when viewed from the front, the corner 14a (14b) at the tip of the side surface is an edge and a right-angled blade. The roll paper A is easily cut by simply pulling in the direction.

  Conventionally, in the case of a protruding tooth type cutting blade, it has been necessary to raise the paper high until the cutting blade hits the protruding tooth, such as the angle γ to be pulled out at the time of cutting shown in FIG. On the other hand, since the present invention is a retractable tooth type cutting blade, it may be as small as the drawing angle β at the time of cutting shown in FIG. Further, in the case of a conventional retracting tooth type cutting blade having an inverted triangular cross section, the cutting direction has to be performed upward and laterally. On the other hand, in the case of the present invention, the cutting direction may be substantially only the lateral direction, which is convenient.

  In the present invention, the push plate 21a of the roll paper holder 20 has a curved shape in which the front portion is slightly bent downward, but is not limited to this, and is one flat plate without bending, or 2 The thing of the polygonal cross-sectional shape etc. with which the flat plate of a sheet or more continues can be used. The roll paper holder 20A in FIG. 12A has a curved shape in which the push plate 21a is bent, and the paper cutting plate 10A is made of one kind of resin, and the lower surface has a slightly convex shape downward. The roll paper holder 20B in FIG. 12B has a curved shape in which the push plate 21a is bent, and the paper cutting plate 10B is made of one kind of resin and has a flat bottom surface. In the roll paper holder 20C of FIG. 12C, the push plate 21b is a flat plate, the paper cutting plate 10C is made of one kind of resin, and the thickness becomes thinner toward the back side. Further, in the roll paper holder 20D of FIG. 12D, the push plate 21b has a flat plate shape, and the paper cutting plate 10D is made of one kind of resin and has a rectangular cross-sectional shape. Such roll paper holders 20 </ b> A to 20 </ b> D also have the same effects as the roll paper holder 20.

  In the present invention, a modified example of the paper cutting plate 10 is the paper cutting plate 10E of FIG. That is, the paper cutting plate 10E of this example includes a thick portion 1A where the blade group 1 is formed and a thin portion 1B formed on both sides of the thick portion 1A. The thick portion 1A is the same as the paper cutting board 10. The thin portion 1B is integrated with a portion 3b other than the core portion 3a of the thick portion 1A, and is made of the same soft resin. When the roll paper A is taken out, the thin-walled portion 1B avoids direct contact between the metal push plate 21a and the pair of left and right roll paper support members, and is interposed between the two so that unpleasant noise is generated. Prevent occurrence. Such a paper cutting board 10E has the same effect as the paper cutting board 10.

  According to the present invention, when the roll paper is pulled out, it can be pulled out smoothly without breaking. Moreover, since the cutting angle of the roll paper is low and the cutting direction is the horizontal direction, cutting is easy. Moreover, although it is an elastic blade, the sharpness is excellent due to the edge effect of the blade. Further, the paper cutting blade is attached to the back surface of the pressing plate, and is not visible to the user or difficult to see, and can give a high-class feeling.

1 blade group 1a, 1b, 1c ... blade 3a core (hard resin)
3b Parts other than the core (soft resin)
10, 10A to 10E Paper cutting board 11 Lower edge of blade 14a, 14b, 14d, 14e Edge of blade (edge)
14c Square shape 14f Lower surface of blade 15 Groove 20, 20A to 20D Roll paper holder 21a, 21b Press plate

Claims (10)

A paper cutting board for cutting paper drawn from roll paper,
A plurality of resin blade groups formed at a predetermined pitch along the longitudinal direction at the front end portion of the paper cutting plate are provided, and each blade has a square shape in which the front view shape of the blade tip has two corner portions. A paper cutting board having a square shape in a side view and a surface on a roll paper side of the blade.   In the blade group, a plurality of rows of non-penetrating grooves whose lower surface and front surface are opened or upper and lower surfaces and upper and lower through grooves whose upper surface and front surface are opened are arranged in a predetermined pitch at the front end of a medium-sized plate member having a predetermined thickness with a front lower end being a corner. The paper cutting board according to claim 1, wherein the paper cutting board is formed.   The paper cutting board according to claim 1 or 2, wherein the blade width is 1.0 to 2.0 mm, and the pitch of the blades in the blade group is 2.0 to 4.0 mm.   The paper cutting board according to any one of claims 1 to 3, wherein the front-view shape of the tip of the blade is rectangular or trapezoidal.   The paper cutting board according to any one of claims 1 to 4, wherein a square shape of the blade in a side view is a right angle.   3. The paper cutting board according to claim 2, wherein the roll paper side surface of the paper cutting plate is a flat surface or a slightly convex surface on the roll paper side.   The paper cutting board according to any one of claims 1 to 6, wherein the paper cutting board is made of resin.   The paper cutting board according to claim 7, comprising two kinds of resins having different hardness, and the blade group is a soft resin.   A roll paper holder provided with a presser plate that can be opened and closed with a rear part as a support shaft and covers the roll paper with respect to a holder main body that holds the roll paper so as to be rotatable, on the back surface of the front end portion of the presser plate, A roll paper holder comprising the paper cutting plate according to any one of 1 to 8.   The roll paper holder according to claim 9, wherein a front end of the paper cutting plate is located on the same side or a rear side of the front end of the presser plate.

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