JP7001301B1 - Binding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a binding tool capable of effectively binding paper leaves. SOLUTION: In the binding tool 1 of the present invention, two substrates 2, 3 provided with each of paired ring portions Rb constituting the binding ring, and the two substrates 2, 3 in the width direction. It has an elastic holding member 4 that is sandwiched from the outside and presses the substrates 2 and 3 against each other to hold them. Along with this, the ring portion Rb opens and closes, and collides with each other on the inner surface Si of each of the two substrates 2 and 3 in the middle of the rotational displacement, and overcomes the pressing force to overcome the problem. The facing protrusion 5 that resists the rotational displacement is provided. [Selection diagram] FIG. 5

Description

The present invention has two substrates provided with a ring portion constituting a binding ring and an elastic holding member that presses and holds the substrates against each other, and the substrate is rotated around a rotation fulcrum under the action of a pressing force by the elastic holding member. It relates to a binding tool that opens and closes the ring portion by being rotationally displaced.

Conventionally, as a binding tool of this kind, there is one described in Patent Document 1, for example.

Patent Document 1 states that "the first and second substrates having a plurality of semi-annular bound rings that can be mutually abutted and abutting each other on the inner side, and both outer sides of the two substrates are constrained. The elastic sheath that allows the opening and closing of the binding ring due to the elastic vertical movement of the substrate, and the longitudinal length that is integrally formed with the first and second substrates at at least one end in the longitudinal direction of both the substrates. In a loose-leaf binding tool having first and second operation knobs formed adjacent to each other in a direction and intersecting each other, at least one of the first and second operation knobs is an operation knob on the other side. The other operation knob has a locking projection that protrudes toward the above, and the other operation knob has a locking portion that engages with the locking projection at a position where the binding ring is closed. Disclosed is a loose-leaf binding tool in which both the operating knobs are configured so that the first and second operating knobs generate a force component that separates them from each other in the longitudinal direction when pressed.

Japanese Unexamined Patent Publication No. 2000-21182

With the binding tool as described above, the pressing force of the substrate by the elastic holding member may not be sufficiently obtained depending on the material, dimensions, shape and other conditions of the elastic holding member which is a component of the binding tool and the substrate.

In this case, if the number of sheets of loose-leaf paper or the like to be bound to the binding ring is large, it becomes difficult to keep the paired ring portions constituting the binding ring in a closed state, and the number of sheets to be bound is limited. Occurs.

This can be manifested especially when the material of the elastic holding member is changed from the metal material to the resin-containing material, whereby the pressing force of the substrate by the elastic holding member is reduced.

The present invention has been made to address the above problems, and an object of the present invention is to provide a binding tool capable of effectively binding paper sheets.

The binding tool of the present invention sandwiches two substrates provided with each of the paired ring portions constituting the binding ring and the two substrates from the outside in the width direction, and presses the substrates against each other to hold them. The ring portion opens and closes with the rotational displacement around the rotation fulcrum of the substrate under the action of the pressing force of the elastic holding member. On the inner surface of the substrate, opposed protrusions that collide with each other in the middle of the rotational displacement, overcome the pressing force, and resist the rotational displacement are provided, and the inner surfaces of the two substrates are respectively provided. , Each of the facing protrusions is formed and has a convex surface with protrusions and a concave surface with protrusions that fit each other .

Further, it is preferable that a plurality of pairs of the facing protrusions are provided in the longitudinal direction of the substrate.

The inner surface of each of the two substrates may have a fulcrum convex portion and a fulcrum concave portion that serve as a rotational fulcrum of the rotational displacement.

In this case, it is preferable that the facing protrusion is provided at a position adjacent to the fulcrum convex portion and the fulcrum concave portion in the longitudinal direction of the substrate.

Further, here, it is preferable that the fulcrum convex portion has a shaft shape, the fulcrum concave portion has a bush shape, and the fulcrum convex portion is fitted into the fulcrum concave portion so as to be able to perform the rotational displacement.

It should be noted that, at both ends of each of the substrates in the longitudinal direction, an opening / closing operation portion that extends so as to intersect each other and can open / close the ring portion by separating / approaching the tip portion can be provided.

In the above binding tool, it is preferable that the elastic holding member is made of a material including a resin material.

More preferably, the material includes a paper material.

According to the binding tool of the present invention, on the inner surface of each of the two substrates, opposed protrusions that collide with each other in the middle of the rotational displacement, overcome the pressing force, and resist the rotational displacement are provided. By providing it, the paper leaf can be effectively bound.

It is a perspective view which shows the binding tool of one Embodiment of this invention. It is a perspective view of the plane side which shows one substrate which the binding tool of FIG. 1 has. It is a perspective view of the bottom side which shows the other substrate which the binding tool of FIG. 1 has. It is an enlarged perspective view which shows the main part of the substrate of FIG. FIG. 3 is a cross-sectional view taken along the thickness direction at a position where a facing protrusion is provided in the longitudinal direction, showing each state in which the ring portion of the binding tool of FIG. 1 is opened and closed. FIG. 3 is a cross-sectional view taken along the thickness direction at a position where a fulcrum convex portion and a fulcrum concave portion are provided in the longitudinal direction, showing each state in which the ring portion of the binding tool of FIG. 1 is opened and closed. It is a perspective view of the plane side which shows one substrate which the binding tool of another embodiment has. FIG. 7 is a perspective view of the bottom surface showing the other substrate of the binding tool of the other embodiment of FIG. 7. It is an enlarged perspective view which shows the main part of the substrate of FIG. It is an enlarged perspective view which shows the other main part of the substrate of FIG. It is sectional drawing which shows the binding tool of another embodiment which has one substrate of FIG. 7 and the other substrate of FIG. 8, along the thickness direction at the position where the fulcrum convex portion and the fulcrum concave portion are provided in the longitudinal direction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the binding tool 1 illustrated in FIG. 1, two substrates 2 and 3 extending in parallel adjacent to each other and two substrates 2 and 3 are sandwiched from the outside in the width direction, and the substrates 2 and 3 are pressed against each other. It has an elastic holding member 4 for holding.

Here, each of the substrates 2 and 3 is provided with a pair of ring portions Rb extending in a predetermined shape such as a semicircular arc on the surface Sf side. In a state where the tip portions of the ring portions Rb provided on the substrates 2 and 3 are in contact with each other, the ring portions Rb are closed to form a binding ring into which loose-leaf paper or other paper leaves are bound. Although five pairs of ring portions Rb are provided in the illustrated example, one to four pairs or six or more pairs may be provided. Further, the shape of the ring portion Rb is not limited to the arc shape as long as the binding ring can be formed by paired ones. If necessary, a protruding portion 2a or a hole portion 2b that fits at the time of contact may be formed on the respective tip surfaces of the paired ring portions Rb.

Here, in the illustrated example, the elastic holding member 4 is, for example, a plate-shaped member having a length substantially equal to or slightly shorter than the substrates 2 and 3 in the longitudinal direction of the substrates 2 and 3. It is assumed that the main body portion 4a has a main body portion 4a and side portions 4b rising from each of both side edges of the main body portion 4a. Here, the outer end 4c of the side portion 4b is formed inward on the substrates 2 and 3 sides, and is engaged with the recessed portion 2c provided on the outer surface Se of the substrates 2 and 3 (FIG. 5A). reference). By adjusting the dimensions such as the width of the substrates 2 and 3 and the width of the elastic holding member 4, the elastic holding member 4 can exert a required pressing force on the substrates 2 and 3.

When the user operates the binding tool 1, the substrates 2 and 3 are rotationally displaced around the rotation fulcrum described later on the inner side surface Si side under the action of the pressing force of the elastic holding member 4, and the substrates 2 and 3 are together. The ring portion Rb is displaced, and the ring portion Rb opens and closes. The user passes the ring portion Rb through the hole provided in the paper leaf in a state where the tip portion of the ring portion Rb is separated and the ring portion Rb is opened, and then the tip portion of the ring portion Rb is brought into contact with the ring portion. By keeping Rb closed, the paper sheet is bound to the binding tool 1.

With such a binding tool 1, depending on the material, size, shape and other conditions of the elastic holding member 4 and the substrates 2 and 3, the pressing force of the substrates 2 and 3 by the elastic holding member 4 cannot be sufficiently obtained, and a large number of sheets are obtained. It may not be possible to reliably bind the paper leaves. As a result, the number of sheets of paper that can be bound to the binding tool 1 is limited.

In order to deal with this, in this embodiment, the inner side surfaces Si of the two substrates 2 and 3 collide with each other in the middle of the rotational displacement of the substrates 2 and 3 as shown in FIGS. The facing protrusion 5 is provided to resist the pressing force of the elastic holding member 4 and to resist the rotational displacement. Although it is not always clear as shown in FIG. 3, the other substrate 3 is also provided with the facing protrusion 5 at a position corresponding to the facing protrusion 5 provided on the one substrate 2 in the longitudinal direction.

According to this, when the substrates 2 and 3 are rotationally displaced, the facing protrusions 5 provided on each of the two substrates 2 and 3 resist the rotational displacement when they collide with each other and get over, so that they come into contact with each other. Then, the closed ring portion Rb cannot be easily opened. As a result, even a relatively large number of paper sheets can be effectively bound.

More specifically, when the ring portion Rb is closed, as shown in FIG. 5A, the facing protrusions 5 of the substrates 2 and 3 are in the thickness direction of the substrates 2 and 3 (vertical direction in the figure). It is located offset from each other.

When the substrates 2 and 3 are rotationally displaced from this state, the facing protrusions 5 of the substrates 2 and 3 collide with each other and ride on each other as shown in FIG. 5 (b). As a result, the two substrates are slightly displaced in the direction in which they are separated from each other, and the elastic holding member 4 is expanded, so that a large pressing force acts on the substrates 2 and 3 as the amount of elastic deformation increases. At that time, resistance to rotational displacement occurs. This suppresses the unintended opening of the ring portion Rb.

When the board 2 and 3 are further rotationally displaced in order to open the ring portion Rb, the facing protrusions 5 of the boards 2 and 3 pass over each other and pass over each other, as shown in FIG. 5 (c). , Move to a position displaced in the thickness direction. At the same time, the ring portion Rb opens, and the user can attach / detach the paper leaf to / from the binding tool 1. Even when the ring portion Rb is changed from the open state to the closed state, resistance is generated due to the riding of the facing protrusion portion 5 against the rotational displacement at that time.

As shown in FIGS. 2 to 5, each of the inner side surface Sis of the two substrates 2 and 3 has a convex surface 6 with protrusions and a concave surface 7 with protrusions, each of which is provided with the above-mentioned facing protrusions 5 and fits with each other. Is preferable. As a result, the convex surface 6 with protrusions collides with the convex surface 6 with protrusions 6 and the facing protrusions 5 provided on the concave surface 7 with protrusions while the convex surface 6 with protrusions slides in the concave surface 7 with protrusions due to the rotational displacement of the substrates 2 and 3. Therefore, it is possible to impart resistance to the rotational displacement while smoothly and stably performing the rotational displacement.

In this case, the facing protrusions 5 can be provided on the convex surface 6 with protrusions or the concave surface 7 with protrusions in a part of the regions of the substrates 2 and 3 in the thickness direction so as to project from the surface. The position where the convex surface 6 with protrusions 6 and the facing protrusion 5 on the concave surface 7 with protrusions are provided in the thickness direction of the substrates 2 and 3 takes into consideration the opening / closing position of the ring portion Rb to which the resistance force is applied by the facing protrusions 5. It is desirable to decide.

It is preferable that the convex surface 6 with protrusions 6 and the concave surface 7 with protrusions include a facing protrusion 5 and are formed of a curved surface as shown in the illustrated example. Further, as shown in FIG. 5, the facing protrusions 5 are formed on the surfaces on both sides of the convex surface 6 with protrusions and the concave surface 7 with protrusions on both sides of the substrate 2 and 3 with the facing protrusions 5 separated from each other. It is preferable to form it by slightly denting it in a concave shape so as to enter after getting over the facing protrusion 5 facing it.

A pair of facing protrusions 5 provided on the substrates 2 and 3 and forming a pair can be provided in the longitudinal direction of the substrates 2 and 3, but a plurality of pairs are provided in order to give a larger resistance force to the rotational displacement. Is preferable. Further, in accordance with this, a pair or a plurality of pairs of the convex surface 6 with protrusions and the concave surface 7 with protrusions forming a pair can be provided in the longitudinal direction of the substrates 2 and 3.

Although the two substrates 2 and 3 have different shapes here, they may have the same shape.

By the way, each inner side surface Si of the substrates 2 and 3 may be provided with a fulcrum convex portion 8 and a fulcrum concave portion 9 which are rotational fulcrums of the rotational displacement. Here, as can be seen from FIGS. A plurality of pairs of fulcrum recesses 9 are provided in the longitudinal direction.

In this embodiment, when the ring portion Rb is opened and closed, the fulcrum convex portion 8 and the fulcrum are in a state where the fulcrum convex portion 8 is inserted into the fulcrum concave portion 9, as shown in FIGS. The contact point with the recess 9 serves as a rotation fulcrum, and rotational displacement of the substrates 2 and 3 is brought about.

As shown in the figure, the facing protrusion 5, the convex surface 6 with protrusions, and the concave surface 7 with protrusions described above may be provided at positions adjacent to the fulcrum convex portion 8 and the fulcrum concave portion 9 in the longitudinal direction of the substrates 2 and 3. preferable. When the substrates 2 and 3 are rotationally displaced around the rotational fulcrum of the fulcrum convex portion 8 and the fulcrum concave portion 9, resistance is effectively applied by the opposed protrusion 5 adjacent to the rotational fulcrum, and the rotational displacement operation is more effective. This is because it is more stable.

7 to 11 show the substrates 2 and 3 included in the binding tool 1 of the other embodiment. In the binding tool 1 of FIGS. 7 to 11, mainly the claw-shaped fulcrum convex portion 8 and a part of the hollow square columnar fulcrum concave portion 9 are replaced with the shaft-shaped fulcrum convex portion 18 and the bush-shaped fulcrum concave portion 19. Except for the above-described embodiment, the configuration is almost the same as that of the above-described embodiment.

For example, the shaft-shaped or rod-shaped fulcrum convex portion 18 integrally formed with the substrate 2 and 3 in a part in the circumferential direction is formed in the bush-shaped fulcrum concave portion 19 having a shape in which a part in the circumferential direction is removed from the cylinder. , The substrates 2 and 3 are fitted so that they can be rotationally displaced. When the substrates 2 and 3 are rotationally displaced, the shaft-shaped fulcrum convex portion 18 rotates while rubbing in the bush-shaped fulcrum concave portion 19.

In this binding tool 1, since the shaft-shaped fulcrum convex portion 18 is held in the bush-shaped fulcrum concave portion 19, the substrates 2 and 3 can be firmly connected to each other while being rotatable and displaceable. As a result, when assembling the binding tool 1 at the time of manufacturing, the misalignment between the substrates 2 and 3 is effectively suppressed, and the manufacturing becomes easy. In addition, unintentional disassembly after assembling the binding tool 1 can be prevented, and the dimensional accuracy after assembly can be greatly improved. Moreover, also in this embodiment, by providing the facing protrusion 5, the convex surface 6 with protrusions, and the concave surface 7 with protrusions, the holding power of the paper leaf bound to the binding tool 1 is improved.

As shown in FIGS. It is preferable to provide it on both sides thereof. In the illustrated example, the protruding portion 11 and the corresponding recessed portion 12 are provided on the outer sides of the convex surface 6 with protrusions on both sides of the fulcrum convex portion 18 and the concave surface 7 with protrusions on both sides of the fulcrum concave portion 19 in the longitudinal direction. Each is provided.

At both ends of the substrates 2 and 3 in the longitudinal direction, opening / closing operation portions 13 extending so as to intersect each other on the surface Sf side can be provided. When the user approaches or separates the tip portion of the opening / closing operation unit 13, as shown in FIGS. 5 and 6, the substrates 2 and 3 are rotationally displaced around the rotation fulcrum, and the ring portion Rb can be operated to open / close. ..

In the binding tool 1 described above, the materials of the substrates 2, 3 and the elastic holding member 4 which are the constituent parts thereof can be made of a metal material. Even with such a metal binding tool 1, the holding power of the paper leaf can be enhanced by applying the present invention.

On the other hand, it is preferable that the elastic holding member 4 and the substrates 2 and 3 are made of a material including a resin material. When the elastic holding member 4 is made of a resin-containing material, the pressing force of the substrates 2 and 3 tends to be lower than that of a metal-made material. However, if this invention is applied, a relatively large number of paper sheets can be obtained. You will be able to bind effectively. In this case, the elastic holding member 4 and the substrates 2 and 3 may be made of only a resin material, or may further include a paper material.

1 Binding tool 2 Board 2a Protruding part 2b Hole 2c Recessed part 3 Board 4 Elastic holding member 4a Main body 4b Side 4c Outer end 5 Opposing protrusion 6 Convex with protrusion 7 Concave with protrusion 8 Convex with fulcrum 9 Concave with fulcrum 11 Part 12 Recessed part 13 Opening / closing operation part 18 Supporting point convex part 19 Supporting point concave part Rb Ring part Sf Front surface Sb Back surface Si Inner surface Se Outer surface

Claims (8)

It has two substrates provided with each of the paired ring portions constituting the binding ring, and an elastic holding member that sandwiches the two substrates from the outside in the width direction and presses the substrates against each other to hold them. However, it is a binding tool that opens and closes the ring portion with the rotational displacement around the rotation fulcrum of the substrate under the action of the pressing force of the elastic holding member.
Opposing protrusions that collide with each other in the middle of the rotational displacement, overcome the pressing force, and resist the rotational displacement are provided on the inner surface of each of the two substrates.
A binding tool having a convex surface with protrusions and a concave surface with protrusions, each of which has an inner surface surface of each of the two substrates, on which each of the facing protrusions is formed and fits with each other . The binding tool according to claim 1 , wherein a plurality of pairs of the facing protrusions are provided in the longitudinal direction of the substrate. The binding tool according to claim 1 or 2 , wherein the inner side surface of each of the two substrates has a fulcrum convex portion and a fulcrum concave portion that serve as a rotational fulcrum of the rotational displacement. The binding tool according to claim 3 , wherein the facing protrusion is provided at a position adjacent to the fulcrum convex portion or the fulcrum concave portion in the longitudinal direction of the substrate. The fulcrum convex portion has a shaft shape, and the fulcrum concave portion has a bush shape.
The binding tool according to claim 3 or 4 , wherein the fulcrum convex portion is fitted in the fulcrum concave portion so as to be capable of the rotational displacement. Any of claims 1 to 5 , wherein an opening / closing operation portion is provided at both ends of each of the substrates in the longitudinal direction so as to extend so as to intersect each other and to open / close the ring portion by separating / approaching the tip portion. The binding tool described in item 1. The binding tool according to any one of claims 1 to 6 , wherein the elastic holding member is made of a material including a resin material. The binding tool according to claim 7 , wherein the material includes a paper material.

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