Detachable leaf binding aid

Abstract

To provide a binding aid which prevents binding defects when binding a loose-leaf sheet having a cut from a punch hole to an adjacent paper edge into a metal ring of a ring notebook.SOLUTION: A binding aid is characterized by a shape having many projections arranged at intervals that fit between the rings of a metal ring fitting for binding a loose-leaf sheet with a cut from a punch hole to an adjacent edge of the sheet, and additional projections for guiding those projections between the rings of a binder for a ring notebook.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a ring notebook. [Background technology]

[0002] Ring notebooks (Non-Patent Document 1), in which loose-leaf paper is bound in a ring binder, have the advantage that the rings are smaller than those of binders that bind loose-leaf paper in an open-close ring binder, and the loose-leaf paper can be opened at any angle, making it easier to write in. However, they have the inconvenience of not being able to insert or remove loose-leaf paper.

[0003] As solutions to this problem, there are shown a loose-leaf paper system (hereinafter referred to as notched loose-leaf paper) in which a notch is made in a punch hole in the loose-leaf paper from the punch hole to the edge of the adjacent paper, and the ring of the binding device is passed through the notch to attach the paper to and detach it from the binding device, and a loose-leaf system in which the paper is attached to the ring by using the protruding parts of a comb-shaped binding aid to push the peninsula-shaped paper portions (hereinafter referred to as "tabs") on either side of the notch in the loose-leaf paper into the ring (Patent Document 1), a standalone technology for the binding aid of the above system (Patent Document 2), and a system in which partition paper of a similar mechanism is added to Patent Document 1 (Patent Document 3).

[0004] However, these prior art technologies have problems such as the tab bending or tearing off due to resistance with the ring when the paper is removed from the binder, the tab getting caught on the ring and not being able to fit the paper into the ring of the binder using the binding aid, and the binding being improper, and when the user pushes the aid in with the protrusion of the aid touching the ring, the protrusion slides onto the top of the ring and the tab cannot be pushed inside the ring, resulting in improper binding. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] https: / / www.kokuyo-st.co.jp / stationery / campus_twinring / [Patent documents]

[0006] [Patent Document 1] Patent Publication No. 2004-262215

[0007] [Patent Document 2] Application No. 2000-000373

[0008] [Patent Document 3] Actual public record 1968-002329 Summary of the Invention [Problem to be solved by the invention]

[0009] To provide a binding aid which prevents binding defects when binding loose-leaf paper having punched holes with notches into a metal ring. [Means for solving the problem]

[0010] This flat binding aid is characterized by having a number of protrusions arranged at positions between the rings of metal rings for binding loose-leaf paper having punched holes with notches, at least one of the protrusions being longer than the others and having a wedge-shaped or arc-shaped tip, and the other protrusions being the same length with aligned tips. Effect of the Invention

[0011] The binding aid of the present invention has the effect of preventing poor binding when loose-leaf paper having a notch extending from a punch hole to the edge of the paper adjacent to the punch hole is inserted into the rings of a binder, in which the protrusion of the binding aid does not fit between the rings and the tab of the paper cannot be pushed into the ring. [Brief description of the drawings]

[0012] [Figure 1] Fig. 1-1: Loose-leaf paper of the present invention Fig. 1-2: Binder with continuous protrusions of the present invention Fig. 1-3: Relationship between loose-leaf paper of the present invention and binding aid [Diagram 2] FIG. 2-1 is a cross-sectional view showing the ring clearance. FIG. 2-2 is a plan view showing the punch hole clearance. [Diagram 3] Figure 3-1: Positional relationship of the binding aids, loose-leaf and ring before binding in the prior art Figure 3-2: Positional relationship of the binding aids, loose-leaf and ring during binding in the prior art Figure 3-3: Positional relationship of the binding aids, loose-leaf and ring before binding in the present invention Figure 3-4: Positional relationship of the binding aids, loose-leaf and ring during binding in the present invention [Figure 4] Figure 4-1: Cross-sectional view showing the relationship between the binding aid and the binding ring in the prior art. Figure 4-2: Positional relationship diagram of the aid, loose-leaf tab, and ring before binding in the prior art. Figure 4-3: Positional relationship diagram showing the ring and tab while the aid is pushing the loose-leaf in the prior art. Figure 4-4: Positional relationship diagram of the ring and tab after the aid has pushed the loose-leaf in the prior art. [Diagram 5] Fig. 5-1: Cross-sectional view showing the relationship between the binding aid and the binding ring of the present invention Fig. 5-2: Positional relationship diagram of the aid, loose-leaf tab and ring before binding in the present invention Fig. 5-3: Positional relationship diagram showing the ring and tab while the aid is pushing the loose-leaf in Fig. 5-4: Positional relationship diagram of the ring and tab after the aid has pushed the loose-leaf in DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The ring notebook system of the present invention comprises a ring notebook and a binding aid, and the ring notebook comprises a cover, loose-leaf paper with notches, a back cover and a ring binder.

[0014] As shown in FIG. 1-1, the ring notebook of the present invention has a peninsula-shaped portion of the paper (hereinafter referred to as tabs) on both sides of a cut from a series of punched holes for binding along the long or short side of the paper to the edge of the paper adjacent to the punched holes, and the ratio of the length of the tab above the cut (hereinafter referred to as the upper tab), the width of the cut, and the length of the tab below the cut (hereinafter referred to as the lower tab) to the length of the punched hole is as follows: Punch hole at top edge of paper: Top tab = 50% Cut width = 25% Bottom tab = 25% For punch holes in the middle of the paper, Top tab = 25% to 35% Cut width = 30% or more Bottom tab = 25% to 35% and the sum of top tab, cut width and bottom tab is 100%, The punch hole at the bottom of the paper is a loose-leaf paper with the top tab at 25%, the cut width at 25%, and the bottom tab at 50%. The paper is bound in a ring binder with a ring width of at least 80% of the length of the punched holes in the paper. The ring notebook is characterized in that the total thickness of the cover, the paper and the back cover bound in the ring is equal to or less than the inner diameter of the ring minus the longest tab length.

[0015] The binding aid of the present invention is a comb-shaped binding aid, characterized in that it has many protrusions arranged at positions between adjacent rings of a metal ring that binds loose-leaf paper, at least one of the protrusions is longer than the other protrusions and has a wedge-shaped or arc-shaped tip (hereinafter referred to as a lead protrusion), and the other protrusions are the same length and have aligned tips, as shown in Figure 1-2. The width of the protrusion is preferably 80% or more of the distance between adjacent rings of the metal ring.

[0016] The loose-leaf paper of the present invention is constructed by focusing on the cause of tab breakage occurring in the prior art, namely, the length of the tab and the way it is hooked onto the ring, and the tab ratio of the paper is specified for the following reasons.

[0017] The notched loose-leaf paper in Patent Documents 1 and 3 focuses on the locking function of the tab, so the tab overlaps the ring for a long length. When force is applied in the direction of pulling the tab away from the ring, the tab is significantly deformed, and when pulled further away, the base of the tab is prone to breakage; however, there is no way to avoid this.

[0018] The loose-leaf paper of the present invention is designed to have tabs that are sufficient to hold the paper in the rings when the ring notebook is in use, but that do not exert a load that would cause damage when the paper is removed.The top, bottom, and middle parts of the paper are all in different conditions when it comes to the force that would tear the paper off when it is held in the rings, and the cut width and the lengths of the upper and lower tabs are specified according to the position of the punch hole on the paper, thereby preventing damage.

[0019] When using a ring notebook, fingers or writing implements may come into contact with the paper, generating a force that pulls the paper away from the rings. When a force is applied to a punch hole in the middle of notched punched loose-leaf paper, the tabs of multiple punch holes adjacent to the position where the force is applied resist the force pulling the paper away from the rings, making it difficult to remove from the rings. However, because the upper part of the paper at the topmost punch hole and the lower part of the paper at the bottommost punch hole are both cut away, the paper is prone to deform when force is applied to pull the paper away from the rings, and because there are no tabs other than the tabs of the punch holes to resist the force in the direction of removal, the paper is more likely to come off the rings than in the middle part.

[0020] The loose-leaf paper of the present invention focuses on the above structure, and specifies the upper tab, cut width, and punch length of the lower tab according to the position of the paper, and specifies the punch hole length in the middle as follows, as shown in 8 of Fig. 2-2: upper tab = 25% to 35%, cut width = 30% or more, and lower tab = 25% to 35%. For the minimum tab length of 25%, even in an A5-sized multi-hole ring notebook with 24 punch holes and a punch hole length of 4 mm, one punch hole can be engaged with the rings of the tabs above and below the cut by 2.0 mm, and the 48 mm long tab can hold the paper in place on the rings, allowing for stable paper retention.

[0021] In addition, the ring notebook of the present invention has a ring width that is 80% or more of the punch hole length, in other words, the punch hole clearance, which is the difference between the punch hole length and the ring width shown in 8' in Figure 2-2, is less than 20% of the punch hole, and the tab length is specified to be 25% or more of the punch hole, so even if the tab length is at its minimum, it is longer than the maximum ring clearance, and the tab will not come out of the clearance.

[0022] When the paper is removed, the length by which one of the tabs in the middle of the paper can be caught in the ring is a maximum of only 1.4 mm, and when force is applied from the top to the bottom of the punch hole in the direction of pulling the tab out of the ring, the tab passes through the ring without being deformed to the extent that it would be broken.

[0023] As described above, the tab in the middle of the loose-leaf paper of the present invention is not easily dislodged even when a force is applied to pull the paper away from the ring, but when a force is applied to pull the paper from the top to the bottom, the tab will come off the ring before it breaks.

[0024] On the other hand, the length of the upper tab for the punch hole at the top end of the paper and the length of the lower tab for the punch hole at the bottom end are set to 50% of the punch hole length, making the length over the ring longer than the middle part, strengthening the resistance to the force pulling the paper away from the ring and preventing the tab from coming off the ring. Also, when the paper is pulled away from the ring from the top end to the bottom end and removed, the cut-off paper parts at the top and bottom ends are significantly deformed, which makes it easier for the tab to pass through the ring, and the tab comes off the ring before it is damaged.

[0025] The binding aid of the present invention has the following characteristic shape.

[0026] In the binding aids of Patent Documents 2 and 3, the tips of the protrusions are aligned, so when the protrusion hits a ring, all the other protrusions also hit the ring. If you try to move the position of the protrusion between the rings, the frictional forces between all the protrusions and the rings will provide resistance, but in such a case, the user will usually press the aid that hits the ring further against the ring, so that the protrusions slide onto the ring as shown in the cross-sectional views of Figures 3-1 and 3-2, making it impossible to push the area around the tab of the loose-leaf paper between the rings, resulting in binding failure.

[0027] In contrast, the binding aid of the present invention is easy to operate because, as shown in FIG. 3-3, it is necessary to align only the lead protrusions between the rings, and when the lead protrusions that hit the rings are shifted to the side of the ring, the only frictional resistance is that of several lead protrusions, so that the shifting can be done with less force than in the prior art.

[0028] Furthermore, because the tip of the lead protrusion is wedge-shaped or arc-shaped, when the user presses the aid against the rings, the lead protrusion will move around the rings and fit between the rings along the shape of the tip as shown in Figure 3-4, and at the same time the other protrusions are also guided between the rings by the lead protrusions, so that the paper between the notches can be pushed into the rings as shown in the cross-sectional view of Figure 3-4.

[0029] Furthermore, the ring notebook and binding aid in Patent Document 3 do not allow for adjustment of the relationship between the length of the tab, the inner diameter and width of the ring, and the width of the protrusions on the aid, so when the aid is used to push the paper between the notches as shown in Figures 4-1 to 4-4, if the width of the protrusions is narrow or if the tab is longer than the ring clearance shown in Figure 2-1, a binding failure will occur in which the tip of the tab does not fit completely inside the ring (Figure 4-4).

[0030] In contrast, in the ring notebook and binding aid of the present invention, when the width of the protrusions of the aid is set to 80% or more of the distance between adjacent rings of the binder, when the protrusions push the paper between the notches, most of the paper except the tab is pushed down. In addition, the total binding thickness of the cover, all loose-leaf paper, and back cover is regulated to be equal to or less than the inner diameter of the ring minus the longest tab length, and since the cover is always open when using the binding aid, the ring clearance is greater than the tab length by at least the thickness of the cover, so that the tab can be securely inserted into the ring without getting caught in it, as shown in Figures 5-1 to 5-4. [Industrial Applicability]

[0031] Ring notebook aid [Explanation of symbols]

[0032] 1. Loose-leaf paper of the present invention 2. Punch holes in loose-leaf paper 3 Punch hole cutout 4. Projection portion of the binding aid of the present invention 4' Examples of protruding parts of prior art binding aids 5. Acute angled lead protrusion of the binding aid of the present invention 5' Arc-shaped lead protrusion of the binding aid of the present invention 6. The peninsula-shaped portion of the loose-leaf paper of the present invention located above the notch (upper tab) 6' Example of a prior art loose-leaf paper tab 7. The peninsula-shaped portion of the loose-leaf paper of the present invention located below the notch (the bottom tab) 8 Punch Hole Length 8' punch hole clearance 9 Binding Rings 10 Width of binding ring 11. Inner diameter of binding ring 12 Total thickness of cover, all loose-leaf pages and back cover 13 Ring clearance of binding device 14. Bound loose-leaf paper 15 Distance between adjacent rings of binding device A Binding Aid of the Present Invention A' Examples of prior art binding aids

Claims

[Claim 1] A flat binding aid having a number of protrusions arranged between adjacent rings of a metal ring for binding loose-leaf paper having punched holes with notches, at least one of the protrusions being longer than the other protrusions and having a wedge-shaped or arc-shaped tip, and the other protrusions being the same length with aligned tips.

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