JPH0543519B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to fasteners, and is particularly applicable to a wide range of applications, from small slips to large ones such as newspapers, and from soft paper like Japanese paper to booklets. To,
The present invention also relates to a fastener that can be fastened to a large thickness without loosening.

[Conventional technology]

Document binding devices that have been widely used in the past include devices that combine a stopper (or presser) and a strip. However, these have the disadvantage that they are inefficient, tend to loosen, and lack clamping force, making it impossible to perform large volumes of binding.

Therefore, the inventor proposed a band fastener (hereinafter referred to as the fastener of the earlier application) as shown in Japanese Patent Application Laid-open No. 57-93199. This has a configuration as shown in FIGS. 2 to 4, and the present application further improves this.

The shapes of the "binding items" that are the objects of the fasteners in this application and the prior application range from small slips to continuous slip paper (for computers), to large items such as newspapers, and in terms of quality, they can be as soft as Japanese paper. There are too many to list, from books to pamphlets. The fastener uses only two (pairs of) binding holes on these "binds" and skillfully utilizes the frictional force generated in relation to the grooves of the band. You can easily bind even unimaginably large amounts of bound items. Moreover, the fastener itself (single unit) can be used for binding, and it also has important features that cannot be found in any other binding tool, such as the fact that it can be easily used as a binding part for devices that have exteriors such as files. It is a binding tool.

The structure of the fastener in the prior application will be explained (Second
(See Figures 4 to 4). In other words, there are only two pieces: one is a rectangular shape with a constant length molded-in plastic stopper, and the other is a string-like cord that acts as a strong chemical product band.
Quality is everything in the mechanism of first application fastener. The stopper is provided with four guide holes for the band at two different intervals of 80 m/m and 60 m/m, and two rows of grooves are provided in parallel to allow the band to be inserted and buried and anchored. The above hole is 80m/m located in the "toji hole"
In addition to the binding holes with a spacing of 60 m/m, the aim is to apply it to those that can use binding holes with a similar spacing. In addition, for paper with many binding holes along the binding edge, that is, continuous slip paper, the interval between holes is 1/2 inch, and there are 6 holes (7 holes).
) 76.2 m/m, and loose-leaf notebook paper, etc. is 3/8 inch and has 8 hole-to-hole sections (9 holes).
The same value is 76.2m/m, so the stopper is 80m/m.
Use of spaced holes is advantageous. Therefore, these "binding items" can also be bound with a band fastener.

Furthermore, the specific structure of the fastener of the prior application will be explained with reference to the drawings. That is, the band stopper 1
00 is made of metal or synthetic resin by molding, pressing, or molding. The document surface side of this band stopper 100 is formed flat, and the non-document surface side has two grooves 102a on the outer surface side in the longitudinal direction.
102b is formed. Furthermore, band receiving openings 103a, 103b, 103c, and 103d are provided at the center of the band stopper 100 for passing the band through. Furthermore, notches 104a, 104b, 1 are provided at the center of the outer wall of the grooves 102a, 102b.
04c, 104d are provided, and these notches 104a, 104b, 104c, 104d are in the groove 1.
This is to allow the bands fitted into the 02a and 102b to be easily removed with a fingertip.

Next, the action of this prior art fastener will be explained. Such a band stopper 100 is shown in FIG.
It is used as shown in FIG. In other words, "binding"
Both ends of the band 200 are passed through the binding holes from below the document and taken out from the top surface of the document. After that, the tip of this band 200 is inserted into the band receiving opening 103 of the stopper 100 that responds to the binding hole spacing of the document.
a, 103d, or 103b, 103c, take it out from the top surface of the stopper, make the length so that both ends of the band 200 are on the top surface of the stopper 100, and insert the band 200 into the groove 102b (or 102a) with your fingers.
Insert 00.

Alternatively, bands 210 and 220 as shown in FIG.
Two band stoppers 100 and 150 arranged on both sides of the document 300 are connected using the fitting force between the band and the groove using two (or one is possible).

In this way, the band is passed through the binding hole in the ``bind'' and exposed through the guide hole provided in the stopper, and the band is tightened, and the band is immediately inserted into the groove and tethered, so that the force is not reduced. This method of binding is different from the loose-leaf method and the binder method, and can be said to be a tightening method. Because of this tightening method,
Because it has fundamentally different characteristics from other commercially available binding products, the binding condition is book-like (bound form) regardless of whether it is a small amount or a large amount.
It has many advantages, such as not being bulky even when used in large quantities, and the binding can be unfolded just like a book.

Next, the manner of use of the fastener of the prior application (which is also common to the fastener of the present application) will be explained.

(a) Both ends of one U-shaped band are ``hijimono''
A method of threading them through each of the two binding holes and securing them with the fasteners on the surface (see Figures 5 and 6).

(b) Use the same fasteners as in (a) on both the front and back sides of the binding item, and use it from either side (side).
How to close and unfasten (Fig. 1, 7)
(see figure).

(c) ``Hijimono'' with an exterior, that is, the width of the back width is determined depending on whether the ``hijimono'' will be used in small quantities or in large quantities, and the width of the back cloth is determined in various ways depending on the size of the ``hijimono''. How to use it as a binding part for files etc. In this case, unlike the attachment of other commercially available binding tools such as binders, only a few parts (fasteners) are needed, so it can be attached to the file using a simple method.

[Problem that the invention seeks to solve]

As mentioned above, there is no limit to the types of "binding items", including particularly large ones, but for example, items with 4 (2 pairs) binding holes spaced at an interval of 80 m/m, and those with porous shapes such as continuous slip paper. There are many different types, including one with 22 binding holes. When using the earlier application's fastener for these large-sized "bound items," if you use it only at the center of the binding edge, it will certainly have a binding effect, but the action of the fastener will not work. The further away you are from the area where the binding is, the more the ends of the binding material come apart, which is what is called "bending development".
We plan to solve this problem by increasing the number of binding holes and using two or three sets of stoppers.

However, although the purpose is fully fulfilled when the binding action is completed and the storage is organized, it has a disadvantage in terms of efficiency, as several sets must be operated each time when it is used frequently.

In addition, Utility Model Publication No. 164220/1983 and Utility Model Publication No. 39/1989
Also in Publication No. 35168 and Publication of Utility Model Application No. 57-19069,
Document binding fasteners consisting of a band and a member that locks the band have been proposed, but all of them have a weak locking force for the band, so they are not suitable for binding.
The disadvantage is that the binding becomes loose when the number of pages increases.

The invention related to the present application has the important feature that the fastener of the earlier application can perform a unique binding process in which the binding result can be made as strong or weak as desired by using only a pair of binding holes for any "binding item". Taking advantage of this, we are not limited to "binds" that have binding holes that can be used with only 80m/m and 60m/m guide ports as in the previous application, but we also offer a wide range of high-grade "binds" that have arbitrary binding holes. To provide a fastener for binding documents that can be bound and firmly bound.

[Means and actions for solving problems]

In order to achieve the above object, the present invention includes a cord having elasticity and having a substantially circular cross section and cut to a required length, and a band-shaped base having an even number of holes formed along the longitudinal direction. A fastener for document binding that binds documents by inserting the cord that has passed through the binding hole of the document into the hole of the base and locking the end of the cord to the upper surface of the base. A groove component having a plurality of rows of protrusions arranged in parallel and having the cord fitted between the rows of protrusions is mounted on the base, and the groove width of the groove component is set to be narrower than the outer diameter of the cord. It is characterized by

Next, technical content related to the present invention will be explained using bullet points.

(1) A plurality of rows of comb-like protrusions are arranged for the purpose of fitting and tying together a strong binding cord (which functions as a band in the fastener of the prior application; hereinafter referred to as a cord) of a certain thickness. A groove component is provided, and the groove component is mounted on the base.

(2) The groove width of the groove part is somewhat narrower than the diameter of the cord in order to generate the necessary frictional force when the cord is fitted.

(3) The distance between the holes (guidance ports) provided on the base can be adjusted arbitrarily in proportion to the size of the "binding item";
m is effective.

(4) The depth of the groove of the groove part is the same as or slightly larger than the diameter of the cord so that the cord can be completely buried.

(5) The spacing between the protrusions in the row of comb-like protrusions is constant except for the one in the center. The spacing between the protrusions in the central region is larger than that in other regions (the purpose of which will be discussed later).

(6) Groove parts for binding operations Pass through the two binding holes, hold the binding item, and apply or pass the two cords that appear on the surface to the guide openings to tighten the binding item. Simply inserting the cord into the groove with your fingertips is enough to tether the cord. Preferably, the grooved parts are provided so as to engage guide ports provided in the coplanar base at intervals that match the holes in the "bindable". One or two pieces are required for one "bind", and two or more are not needed for any large "bind". Regarding the phrase "apply to or pass through the guide port" above, remove a part of the base of the guide port and directly apply the base with the cord exposed on the top surface to the groove part, and immediately press and insert it. The main point is that it can be done. However, in rare cases, when the base is not cut out in the "bound" state, a method similar to threading the stitch size is used.

(7) Main "binding items" There are many types of "binding items" that use binding holes to perform binding. (b) 4 holes (2 pairs) at 80m/m intervals, (c) porous holes at 1/2" intervals, (d) many holes at 3/8" intervals, etc. in accordance with standards. The main type is ``hijimono''.

Although (a), (c), and (d) are "binding products" with completely different binding hole formats as described above, as detailed in the preamble, there are two grooves for the guide ports spaced 73m/m apart. It is a type that uses parts, and can be used for individual types of "binding items" such as (A) for (A) and (C) for (C), as well as (A), (C), and (D) binding hole formats. Old “binding”
It can also be effectively used to mix and bind at the same time. In the case of (b), (c), and (d) for large-sized "bound items", two groove parts are provided for four guide ports, that is, two types of spacing: 80 m/m and 240 m/m. The above (a) shall be provided by arbitrarily selecting one or the other.
The binding action can be performed in the same manner as (c) and (d). In this case, there is also the advantage in terms of construction that only two groove parts are required for four guide ports (as can be seen outside of FIG. 1).

The above explanation is for the case where the binding holes are provided according to the standard, but the groove part can be easily applied to "bound items" designed with arbitrary binding hole spacing. It can be used for everything from small slips to newspaper-sized ones, and from small quantities to large quantities with a binding thickness of 150 m/m or more. It has a unique effect that is not seen in any other species. Moreover, the grooved parts have great advantages such as being able to be obtained by a simple construction method.

One of the main differences between the present application and the prior application is as follows.

In the prior application, the groove portion 102 for anchoring the band and the guide port (band receiving port 103) are inseparable from the base, so as mentioned above, it is not possible to provide a perfect solution depending on the type of "binding". However, in the present invention, as long as it is a "binding article" that can use two binding holes, it is not limited to those with four binding holes or many holes, but also those with non-standard binding holes that can be used in various kinds and in small quantities to large quantities. The first difference between the new model and the previous application is that fastener fasteners can be made to quickly adapt to any "binding" that can be planned and made.

Next, the mechanism of the groove component of the present application will be described in more detail.

Like the earlier application, it is made of two parts: a cord (same as the band of the earlier application) and a groove part, and the stopper of the earlier application is of a fixed type with a corresponding binding hole, but the present application is a mechanism that allows these parts to be created in accordance with any binding hole spacing. That is, the present application combines a guiding port provided in the base for pulling the cord that comes out through two binding holes in the "binding item" and a groove part into which the cord is inserted and moored. be. The distance between the two guide holes should match the distance between the binding holes in the "binding material". In addition, the length or size of the base (described later) on which the guide port is provided can be adjusted arbitrarily in proportion to the size of the "binding item", which is why this invention brings about the above-mentioned merits that are different from the earlier application. .

The groove parts are provided in one row or in two parallel rows as in the previous application. The base to which the groove parts are attached needs to have a space for attachment and a shape that will not cause the force to become unbalanced during the binding operation.

Next, the base (substrate or base) to which the groove component is attached will be explained.

The base is sometimes a bar, or a ``tojimono'' to protect the ``tojimono''.
It may be a flat cover with the same shape as the original, or it may be a part of a wide variety of files (these parts are commonly called "funes"). It can also be directly attached to unspecified objects using adhesive or the like.
Furthermore, depending on the material used, a guide port is formed on the above-mentioned rod-shaped base and a groove part is attached to the finished so-called stopper, which is then attached to a cover or file (by riveting or other methods). ) is common.

In short, the groove parts of the present invention have the special possibility of being able to be attached to objects of unspecified shapes at any time.

Next, the guide port of the present application and the guide port of the prior application will be explained.

There is a part that is missing and leads to the outside, and it is placed in any position to match the two (pair of) holes in the binding. Note that there is no need to change the size of the guide port as long as the diameter of the cord to be used does not change, and the first method to make the guide port is to press a mold.

The fastener of the earlier application has the tip of the cord inserted into the guide port (Fig. 2 103a to 103) so as to pass through the needle.
d) This tendency is particularly noticeable and inconvenient when operating a long cord (referred to as a band in the prior application) for the purpose of "binding" a large amount of cords. However, since the groove part of the present application has grooves formed between the rows of protrusions,
The root of the code that escaped through the hole and appeared on the surface,
Since the cord can be directly engaged with the groove, not only is the operation much simpler, but the cord can be inserted into the groove more easily and steadily, resulting in significant progress.

The function of the groove component of the present invention will be explained in more detail.

Similar to the previous application, the binding action utilizes the frictional force generated in the relationship between the cord and the groove, and while a certain amount of resistance is unavoidable when the cord is inserted into the groove, this is an important factor in generating the frictional force. It is a process. However, the main requirements for this type of device are that it should be easy to operate and highly effective. The fastener according to the present application follows this line, and the size of the groove part is determined by taking into consideration the thickness of the cord, the length of the groove, etc.

As shown in FIG. 1, the groove component 1 is provided with a large number of protrusions 3 and 6 on both side ends, and these large numbers of protrusions 3 and 6 form a protrusion row. The spacing between the protrusions in one row of protrusions is constant except for the one in the central region. In the central region, the distance between the protrusions is larger than in other regions. Since the distance between the protrusions is particularly large at the central portion, the space between the protrusions serves as an opening for removing the cord 50 from the groove, making it easier to operate. The overall length of the groove part 1 is selected from among a large number of unspecified sizes to correspond to the "bound item" which is expected to have the widest range of demand at present. In addition, in Figure 1, 30
4 is a base to which the groove part 1 is attached, and 40 is a document.

Next, the important functions of the new groove parts will be explained in detail. Regarding the relationship between the cord and the groove, as the length of the groove increases, frictional force increases and the holding force is strengthened, but this has the disadvantage that resistance increases and operation becomes troublesome. Conversely, as the groove becomes shorter, the holding force decreases, but there is an advantage that the operation becomes easier. The groove component of the present application has a shape that skillfully incorporates the above two advantages. That is, short grooves are easy to operate, and it is even easier to operate them when they are lined up at a constant interval as shown in the figure.

For example, in the one shown in FIG. 1, eight grooves are formed by the protrusions 3 and 6, and although it seems to require eight times as much effort, the operation of press-fitting the cord is actually much easier and more efficient. Also, regarding the keeping force, the notch (the distance between the protrusions in one row of protrusions)
As long as there is a groove, the working groove is insufficient compared to the total length and the holding force is likely to be insufficient, but the actual result is the opposite.
The holding power will be further strengthened. The keeping force acts as a force in the longitudinal direction of the cord, so in the area where the cord is in the groove, the cord is compressed to the width of the groove and the size in the width direction becomes smaller, but in the area where there is no groove, that is, the notch. Conversely, the cord expands due to its elastic force. As a result, there is a difference in the thickness of the cord between the part of the cord with grooves and the part without it, and the surface of the cord becomes uneven, which increases the resistance between the cord and the row of protrusions, which reduces the above effect. I believe it will happen. Although it is difficult to prove this important fact with numbers, it is easy to perceive in practical operations.

Also, since the size of 73m/m (the spacing between the guide ports on the base) was selected from an unspecified number, it is possible to adopt other sizes depending on the demand, but the existing size is insufficient to meet the small-scale demand. It can also be easily adapted by cutting and adding or subtracting things.

Next, the manufacturing method of the groove component of the present application and the method of attaching it to the base will be explained.

Two types of groove parts are considered: metal or plastic. The main products made of metal are sheet metal processed products. However, as a simple installation method, it is common to use plastic products made by the in-jet extrusion method or the like. Items based on PVC-based raw materials that are easy to weld can be easily attached to the same PVC-based base using a method using a syringe or the like.

〔Example〕

We have explained in detail above that the fastener type binding tool according to the present application can be easily made at any time by matching the binding holes that are placed at arbitrary intervals in the "binding item", so we will now show a part of it in an example. I decided to. (a) uses a rod-shaped base (Fig. 1,
(Fig. 5 to Fig. 11), (b) is the same rod-shaped object as in (a) used as a binding tool with an exterior, that is, a file (Fig. 12), (c) is the one published in Japanese Utility Model Publication No. 14456/1983. What was used for the described file (currently referred to as a growing file by the applicant) (Figures 13 and 14),
(d) is used for the cover (Fig. 15) and will be explained below. All of the above are examples in which a groove part is attached to a rod-shaped base having an inlet and finished as a stopper, and examples in which the same is used.

(a) This embodiment uses a rod-shaped stopper, and as mentioned above, the shape of the base to be adopted can be arbitrary, and a thin rectangular one (Figs. 5 to 7) and a deformable mold are used to maintain strength. There are two types (Figures 8 to 11) that employ the Ruder molded product used.
The former is used for applications where the requirement for durability is relatively low and bulkiness can be kept to a minimum, and the latter is used for applications that can withstand strong force and require durability.

For example, in FIG. 5, two groove parts 1
The base 30 on which the document 40 is attached is the same as that shown in FIG.
It is only provided on one side of the The document 40 is bound by a single cord 50 passed through the binding hole of the document 40. Further, since the binding hole is located at the center of the document 40, the cord 50 is inserted through the guide ports 30B and 30C at the center of the base 30.

In FIG. 6, the structure of the document binding fastener is the same as that in FIG. 5, but since the binding holes are at both ends of the document 40, the code 5
0 is the guide port 30A, 30 on both ends of the base 30
It is inserted into D.

In FIG. 7, the structure of the document binding fastener is the same as that in FIG. 1, and bases 30 are provided on both sides of the document 40. However, since the binding holes are at both ends of the document 40,
The two cords 50 are inserted through the guide ports 30A and 30D at both ends of the base 30, respectively.

Next, in FIG. 8, since the two groove parts 1 are provided in parallel, the total length of the base 31 can be shortened, and it can be said that it is suitable for small-sized "bound items". Further, in order to increase the strength of the base 31, the base 31 is provided with a protrusion 31E. The interval between the guide ports 31A and 31B is 73 mm.

The one shown in FIG. 9 also has a protrusion 32E provided on the base 32 in order to increase the strength of the base 32. Further, one groove component 1 is attached to the base 32, and both ends of the cord 50 are fitted into this groove component.

The one in Figure 10 also has a protrusion 33E on the base 33 to increase its strength, and the overall length of the base is long, so it can be adapted to large-sized "bound items". .
Then, the guide ports 33A, 33B, 3 are placed at 73mm intervals.
On the base 33 on which 3C and 33D are formed,
Two groove parts 1 are installed.

FIG. 11 is intended to use a base for super-large "binds" and to adapt it to super-large "bins" as large as newspapers. Also in this case, the base 34 is provided with a protrusion 34E in order to increase the strength of the base 34.

The length of the base of the document binding fastener shown in FIGS. 5 to 11 can be arbitrarily determined depending on the size of the document.

The types of embodiments shown in FIG. 10 have many merits that are worth highlighting, so we will discuss them in detail.

First of all, this type has four guide ports, so according to the above explanation, it is thought that four groove parts are required.
However, as shown in FIG. 10, two groove parts can engage any of the four guide ports. In (3) above
Although the 73mm size is mentioned, it is actually shown in Figures 5 and 6.
This is because the usage as shown in the figure was taken into consideration, and this is an important point in production. However, what is most important is what kind of action and what kind of binding can be achieved during actual binding work, but if the stopper according to the present application is adopted, it will not work as well as any other type of binding tool currently on the market. In addition to simple usage that cannot be seen, it also has unique effects. Let me elaborate on this point. First of all, it is sufficient to use the inner guide port for "binding" with binding holes at 80 mm intervals, and furthermore, it is possible to simultaneously bind continuous slip paper and notebook paper, etc., which have the aforementioned large number of holes.
Adoption of the type shown in Fig. 10 has the advantage of being able to hold down even large ``bound items''. Next, since the interval between the outer guide ports is 240 mm, it is sufficient to use the pair of binding holes on the outer side, that is, the interval of 240 mm, for large sheets of paper, booklets, etc., which have four binding holes spaced apart at 80 mm intervals. Also, among continuous slip forms, the one with 22 holes that is most in demand has a spacing of 240 mm from the second hole from both ends (19 sections of 1/2-inch spacing, 20 holes). By using just two of the 22 binding holes, it is possible to create a binding that looks just like a bound book. Furthermore, the fact that the 4-hole binding hole can be used at the same time as ``binding'' cannot be called anything other than groundbreaking.

(b) FIG. 12 is an example in which the document binding fastener shown in FIG. 10 is incorporated into a file 60. This embodiment has the great advantage that, unlike other commercially available products, the back width, exterior size, and strength can be selected at will. The reason for this is that with other commercially available products, the binding device used is simple or requires a heavy mechanism depending on whether the binding is for a small amount or a large amount. Unlike the parts of the present application, they cannot be shared, and in order to firmly hold the attachment of the binding tool, it is often necessary to use materials that are unintentionally thick and bulky.

(c) The ones in Figures 13 and 14 are attached to the document binding fasteners shown in Figure 1 on files 61 and 6.
2 (growing file). As seen in the use of the fastener of the present application, the glowing file used in this embodiment ensures stable binding and fully demonstrates the purpose of the application.

(d) Fig. 15 is an example in which documents are bound together with the covers 63A and 63B using the document binding fastener shown in Fig. 10. This example shows one way to make a cover without a spine, and it is noted that there are many other ways to make a cover.

In addition, by using the fastener according to the present invention on both the front and back of the "binding item", it can be viewed from either side (side).
It is also possible to use it by closing and unfastening it (Figures 1 and 7).

Next, the groove components used in the above embodiments will be described.

In FIGS. 16 to 17, the groove parts are formed from metal or synthetic resin by molding, pressing, or molding. Its document contacting surface is flat, and a groove 2 of a predetermined width (for example, 2 mm) is formed in the longitudinal direction on the non-document surface side. This groove 2 is formed by two protrusions 3 and 6 having a predetermined thickness (for example, 1 mm). A notch 4 of a certain length (for example, 10 mm) is provided at the center of the protrusions 3 and 6. The protrusions 3, 6 are further provided with notches 5A, 5B, 5 of equal width (for example, 4.5 mm) at equal intervals (for example, every 4.5 mm) in the longitudinal direction around the notch 4.
C, 5D, 5E, 5F, 7A, 7B, 7C, 7
D, 7E, and 7F are provided, and both the protrusions 3 and 4 of the groove component 1 are formed with a comb-shaped protrusion row.
FIG. 17 is a front view of FIG. 16, and the protrusion 6 (or 3) has a predetermined height (for example, 2.5 mm). The cutout portion 4 is provided so that the cord inserted into the groove 2 can be easily removed with a fingertip.

Furthermore, by providing a plurality of notches, the width of the cord changes in the length direction of the cord, resulting in large and small portions. Due to this change, the holding force of the groove in the longitudinal direction of the cord becomes stronger than when there is no notch. Furthermore, the elastic cord has the advantage that the holding force does not change even if a phenomenon occurs in which the change does not repeat itself after a certain period of time has elapsed.

Furthermore, the groove parts are not limited to those shown in FIG. 18 (which is the same as the groove parts shown in FIG.
), those having protrusions 3B and 6B with chamfered tips as shown in FIGS. 21 and 22 (20th
), cylindrical as shown in Figures 24 and 25,
Or those having protrusions 3C and 6C with rounded tips as shown in Figs. 26 and 27 (No. 23)
Figure) etc. are possible.

FIG. 28 shows an example of a base on which the groove component 1 shown in FIG. 16 is attached. This base 10 is formed in an inverted L shape as shown in FIG.
It is composed of 2. This bottom wall 11 is provided with a hammer-shaped guide port 13 at an appropriate position, and another guide port 14 is provided at an interval of a binding hole (for example, 73 mm) from this guide port 13. The guide ports 13 and 14 have the same width (for example,
2.5mm) T-shaped notch. A groove component 1 shown in FIG. 16 is fixed on the bottom wall 11 of the base 10 with the entrance of the groove 2 aligned with the guide port 13.

FIG. 29 shows a base that is longer than the base 10 shown in FIG. 28 (for example, 1.5 times as long). This base 20 is composed of a bottom wall 21 and a side wall 22, and this bottom wall 21 has guide ports 23, 24, 25,
26 are provided. This embodiment differs from the embodiment shown in FIG. 28 in that the number of guide ports is doubled (4). If the groove part 1 shown in FIG. 16 is fixed between the guide ports 23 and 24 and between the guide ports 25 and 26, the hole 4 in this embodiment
It can be used for a wide range of "binding items", both small and large.

[Effects of the Invention] As explained above, according to the present invention, when the cord passed through the binding hole of the document is fitted into the groove,
The cord is compressed from both sides at the portion where it comes into contact with the row of comb-shaped protrusions, and expands at the other portions due to the elastic force of the cord, making it possible to form minute irregularities on both surfaces of the cord. As a result, the resistance between the cord and the row of protrusions becomes extremely large, and even if the cord is pulled in the axial direction (that is, even if tension is applied to the cord), the cord will not easily come out of the groove. This makes it possible to securely bind documents.

In addition, since the row of protrusions is comb-shaped, you can press the cord into the groove with your fingertips and pull out the press-fitted cord with relatively little force, making it easier to bind documents. It can be carried out.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the fastener for document binding of the present invention, Fig. 2 is a plan view of a conventional fastener for document binding, and Figs. 3 and 4 show the fastener for document binding shown in Fig. 2 actually used. Perspective views, Figures 5 to 11
The figure is a perspective view showing a modified example of a fastener for document binding, FIGS. 12 to 15 are perspective views of a file using the fastener for document binding of the present invention, and FIG. 16 is a perspective view of a file using the fastener for document binding of the present invention. FIG. 17 is a front view of FIG. 16, FIG. 18 is a plan view of the groove component, and FIG. 19 is a plan view of the groove component used in FIG. 16. Plan, 20th
21 is a front view of the projection shown in FIG. 20, FIG. 22 is a perspective view of the projection shown in FIG. 20, and FIG. 23 is a circular A plan view of a groove component having columnar projections,
FIG. 24 is a side view of a groove component having a cylindrical projection, FIG. 25 is a perspective view of the projection shown in FIG. 24,
Fig. 26 is a side view of a groove part having a cylindrical protrusion with a rounded tip, Fig. 27 is a perspective view of the protrusion shown in Fig. 26, Fig. 28 is an example of a base, and Fig. 28A shows a groove part with a rounded cylindrical projection. FIG. 29 is a plan view of the base to be attached, FIG. 29 is a sectional view of FIG. A, FIG. 29 is a partial view of the base shown in FIG. 1...Groove parts, 2...Groove, 3, 6, 3A, 6
A, 3B, 6B, 3C, 6C, 3D, 6D...Protrusion, 4, 5A-5F, 7A-7F...Notch, 1
0, 20, 30...Base, 13, 14, 23,
24, 25, 26, 30A-30D, 31A, 3
1B, 32A, 32B, 33A to 33D...Guidance port, 31E, 32E, 33E, 34E...Protrusion portion, 50...Code, 60, 61, 62...File, 63A, 63B...Cover.

Claims (1)

[Scope of Claims] 1. A document comprising an elastic cord having a substantially circular cross section and cut to a required length, and a band-shaped base having an even number of holes formed along the longitudinal direction. In a document binding fastener for binding documents, by inserting the cord passed through the binding hole into the hole in the base and locking the end of the cord to the upper surface of the base, a row of comb-like protrusions is formed. A plurality of groove parts arranged in parallel and in which the cord is fitted between the rows of protrusions are mounted on the base, and the groove width of the groove part is set to be narrower than the outer diameter of the cord. Fastener for document binding.