JP4650089B2 - binder - Google Patents

Description

  The present invention relates to a binder that binds a plurality of sheets in which binding holes are formed. Specifically, by making the ring part that binds the paper a part independent of the back part, the loop diameter of the ring part can be selected, and the paper is bound in an optimal form regardless of the thickness of the booklet to be formed. It is made to be able to.

  A binder that binds a plurality of sheets having a binding hole formed therein includes a ring-shaped member that is inserted into the binding hole of the sheet, and a back portion that supports the plurality of ring-shaped members in accordance with the arrangement of the binding holes.

  Conventionally, there has been proposed a binder in which a ring-shaped member and a back portion are formed of an integrally molded part such as a resin (for example, see Patent Document 1).

JP 2000-289376 A

  Normally, in the binder, when the number of sheets to be bound is small, the diameter of the ring-shaped member is small, and when the number of sheets is large, the diameter of the ring-shaped member needs to be large.

  For this reason, the conventional binder has a problem that it is necessary to prepare a plurality of types of parts according to the number of sheets to be bound. That is, in the binder in which the ring-shaped member and the back portion are formed as an integral part, it is necessary to prepare a plurality of types of binders having different diameters of the ring-shaped member.

  Further, when the number of holes differs depending on the paper, it is necessary to prepare a plurality of types of binders with different numbers of ring-shaped members.

  As a result, problems such as an increase in manufacturing cost due to the production of a plurality of types of parts, and an increase in management cost due to the management of a plurality of types of parts that are always in stock, arise.

  SUMMARY An advantage of some aspects of the invention is that it provides a binder that can cope with a difference in the number of sheets to be bound.

In order to solve the above-described problems, a binder according to the present invention is configured by a ring part that is inserted into a binding hole formed in a sheet and binds a plurality of sheets, and a member independent of the ring part. comprising a back portion part is attached, the ring portion, the ring engagement portion attached to the back, with only the both end portions of the one end and the other end of the length direction of the ring portion, the back is in-ring portion Li The back engagement portion to which the ring engagement portion is attached is provided according to the arrangement of the binding holes of the paper , the back engagement portion is configured as an engagement protrusion protruding in a convex shape, and the ring engagement portion is engaged. It is configured as a concave engagement hole that fits into the protrusion, and the engagement hole on one end side and the engagement hole on the other end side of the ring part that are overlapped in a loop shape are the engagement protrusions on the back part. mounting is a feature that the ring portion is attached to the back That.
The binder according to the present invention includes a ring part that is inserted into a binding hole formed in a sheet and binds a plurality of sheets, and a back part to which the plurality of ring parts are attached. The ring part is provided with a ring engaging part that is attached to the back part only at one end side and the other end part in the length direction of the ring part, and the back part is a back part to which the ring engaging part of the ring part is attached. The engagement portion is provided in accordance with the arrangement of the binding holes of the paper, the back engagement portion is arranged in two rows, and the ring engagement portion on one end side of the loop-shaped ring portion is the back portion of one row of the back portion. It is attached to an engaging part, The ring engaging part of the other end side of a ring part is attached to the back part engaging part of the other row | line | column of a back part, A ring part is attached to a back part, It is characterized by the above-mentioned .

  In the binder of the present invention, the back portion is attached by attaching the ring engaging portion on one end side and the ring engaging portion on the other end side of the ring portion inserted into the binding hole of the paper to the back portion. A plurality of sheets are bound by a ring portion fixed to the loop.

  Since the ring part is an independent part with respect to the back part, if multiple types of ring parts with different lengths are prepared, a binder having ring parts with different loop diameters can be constructed using a common back part. The

  According to the binder of the present invention, the ring portion that binds the paper and the back portion that supports the plurality of ring portions are configured as independent parts, so if a ring portion having a different length is prepared, a common back portion is used. Thus, a binder including a ring portion having a loop diameter corresponding to the number of sheets can be configured.

  In addition, since the number of ring portions attached to the back portion can be arbitrarily selected, it is possible to deal with the difference in the number of holes in the paper by using a common back portion.

  Thereby, since a back part can be shared, the number of parts prepared corresponding to the thickness of a booklet, etc. can be reduced.

  Hereinafter, embodiments of the binder of the present invention will be described with reference to the drawings.

<Configuration Example of Binder of First Embodiment>
FIG. 1 is a perspective view showing an example of a state in which the binder 1A of the first embodiment is assembled, FIG. 2 is a plan view showing an example of a usage state of the binder 1A of the first embodiment, and FIG. It is a disassembled block diagram which shows an example of the state before use of the binder 1A of embodiment.

  The binder 1A of the first embodiment includes a back part 2A and a ring part 3A. The back portion 2A is a thin plate-like member having a length corresponding to the length of the sheet 4 to be bound, and a plurality of engaging protrusions 5A arranged in a line in the length direction at a predetermined interval. And a plurality of engaging hole portions 6A arranged in parallel with the engaging protrusion 5A at the same interval as the engaging protrusion 5A. The back portion 2A is made of, for example, a resin that is flexible and elastically deformable, and the engagement protrusion 5A is integrally formed and the engagement hole portion 6A is formed therethrough.

  The engagement protrusion 5 </ b> A is an example of a back engagement portion, and is arranged, for example, according to the interval between the binding holes 4 a formed in the paper 4. The cross-sectional shape of the engagement protrusion 5A is, for example, a circular shape that matches the shape of the engagement hole 6B formed in the ring portion 3A. Further, the engaging protrusion 5A includes a locking portion 5h that prevents the ring portion 3A from coming off.

  As shown in FIG. 3A, the locking portion 5h has, for example, a triangular cross-sectional shape on the front end side of the engagement protrusion 5A, and a part protrudes from the outer periphery on the front end side of the engagement protrusion 5A. It is comprised in the shape caught in the engagement hole 6B of the part 3A. Further, the engaging protrusion 5A is formed with an introduction portion 5i with the tip portion of the locking portion 5h tapered.

  The engagement protrusion 5A is a portion where the ring portion 3A fits between the lower end of the position where the locking portion 5h is formed and the back portion 2A. The height of the portion where the ring portion 3A fits in the engagement protrusion 5A is The thickness is substantially equal to or slightly larger than the thickness of the portion 3A.

  The engaging hole 6A is an example of a back engaging portion, and has a circular shape into which an engaging protrusion 5B formed on the ring portion 3A is fitted.

  The ring portion 3A is a thin plate-like member having a width that fits into the binding hole 4a of the paper 4 as shown in FIG. 2A, and the engagement hole portion 6B has a length as shown in FIG. 3B. For example, the engagement protrusion 5B is formed on the other end side. The ring portion 3A is made of, for example, a resin that is flexible and can be elastically deformed. The engagement protrusion 5B is integrally formed, and the engagement hole portion 6B is formed therethrough.

  The engagement protrusion 5B is an example of a ring engagement part. As shown in FIG. 3B, the engagement protrusion 5B has the same configuration as the engagement protrusion 5A of the back part 2A, and the engagement part 5h formed with the introduction part 5i. Prepare for the tip side. Here, the hole diameter of the engagement hole 6A of the back portion 2A into which the engagement protrusion 5B of the ring portion 3A is fitted is smaller than the diameter of the locking portion 5h of the engagement protrusion 5B.

  The engagement hole portion 6B is an example of a ring engagement portion, and has a circular shape into which the engagement protrusion 5A of the back portion 2A is fitted, as shown in FIG. The hole diameter of the engagement hole portion 6B is configured to be smaller than the diameter of the locking portion 5h of the engagement protrusion 5A.

<Use Example of Binder of First Embodiment>
FIG. 4 is a block diagram showing an example of use of the binder 1A of the first embodiment. Next, an example of use of the binder 1A of the first embodiment will be described with reference to FIGS. Here, FIG. 4 (a-1, 2) shows a case where the number of sheets 4 to be bound is small, and FIG. 4 (b-1, 2) shows a case where the number of sheets 4 to be bound is large.

  First, the back portion 2A and the ring portion 3A are separated, and a plurality of types of ring portions 3A having different lengths are prepared according to the number of sheets 4 to be bound. As shown in FIG. 4 (a-1), when the number of sheets 4 to be bound is small, as shown in FIG. 4 (a-2), a short ring portion 3A having a length L1 is used, and FIG. As shown in (-1), when the number of sheets 4 to be bound is large, as shown in FIG. 4 (b-2), a long ring portion 3A ′ having a length L2 is used.

  In an example using the ring portion 3A, the ring portion 3A is passed through the binding holes 4a of the stacked sheets 4. Then, the engagement hole portion 6B located on one end side of the ring portion 3A is fitted into the engagement protrusion 5A at a predetermined position of the back portion 2A.

  When the engagement hole 6B of the ring part 3A is fitted into the engagement protrusion 5A of the back part 2A, the back part 2A and the ring part 3A are made of a flexible material, so the engagement hole part of the ring part 3A When 6B is pushed into the introduction portion 5i of the engagement protrusion 5A of the back portion 2A, the engagement hole portion 6B is gradually expanded along the tapered shape of the introduction portion 5i of the engagement protrusion 5A. As a result, the ring portion 3A is elastically deformed and bent around the engaging hole 6B, and gets over the engaging portion 5h of the engaging protrusion 5A. In the ring portion 3A, when the engaging hole portion 6B gets over the engaging portion 5h of the engaging protrusion 5A, the shape around the engaging hole portion 6B is restored.

  Since the hole diameter of the engagement hole 6B of the ring portion 3A is smaller than the diameter of the locking portion 5h of the engagement protrusion 5A as described above, when the engagement hole 6B fits into the engagement protrusion 5A, the engagement hole 5B is engaged. The locking portion 5h of the protrusion 5A serves as a retaining member, and the ring portion 3A is held by the back portion 2A.

  When the engagement hole 6B on one end side of the ring portion 3A is fitted into the engagement protrusion 5A of the back portion 2A, the ring portion 3A is bent in a loop shape, and the engagement protrusion 5B located on the other end side of the ring portion 3A is formed. The engagement hole 6A located next to the engagement protrusion 5A into which the engagement hole 6B on one end side is fitted is fitted. The operation of fitting the engagement protrusion 5B of the ring portion 3A into the engagement hole 6A of the back portion 2A is the same as the operation of fitting the engagement hole 6B of the ring portion 3A to the engagement protrusion 5A of the back portion 2A.

  As a result, the ring portion 3A is held by the back portion 2A in such a manner that the end surfaces do not overlap each other and the end surfaces of the end portions face each other, the ring portion 3A becomes a loop shape, and a plurality of sheets of paper 4 are turned. It is bound as possible.

  Since the paper 4 has a plurality of binding holes 4a, the ring portion 3A is passed through all the binding holes 4a or any binding holes 4a selected as necessary, as described above. The engagement hole 6B on one end side of the ring portion 3A is fitted into the engagement protrusion 5A of the back portion 2A, and the engagement protrusion 5B on the other end side is fitted in the engagement hole portion 6A of the back portion 2A to form a loop-shaped ring portion. 3A is comprised.

  Here, since the engagement protrusion 5A and the engagement hole 6A of the back part 2A are arranged in accordance with the interval of the binding holes 4a of the paper 4, the ring part 3A is attached to correspond to all the binding holes 4a. It is also possible to attach the ring portion 3A so as to correspond to an arbitrary binding hole 4a.

  When the number of sheets 4 to be bound is small, the loop diameter of the ring portion 3A may be small. For this reason, the ring portion 3A having a small loop diameter can be formed by using the short ring portion 3A having the length L1, as shown in FIG. 4 (a-1). On the other hand, when the number of sheets 4 to be bound is large, it is necessary to increase the loop diameter of the ring portion 3A. For this reason, by using the ring portion 3A ′ having a long length L2, a ring portion 3A ′ having a large loop diameter can be formed as shown in FIG.

  Accordingly, by selecting and using the ring portion 3A according to the number of sheets 4 to be bound from the ring portions 3A having different lengths, it is possible to cope with the difference in the number of sheets 4 to be bound. Further, since the back portion 2A is a component independent of the ring portion 3A, if the size of the paper 4 to be bound is the same, one type of back portion 2A can cope with the difference in the number of sheets 4 to be bound.

  Accordingly, it is possible to reduce the types of parts prepared corresponding to the difference in the number of sheets 4 to be bound, to reduce costs, and to easily manage consumables inventory.

  Further, since the engaging portion of the ring portion 3A with respect to the back portion 2A is formed at both ends of the ring portion 3A, the portion inserted into the binding hole 4a of the paper 4 of the ring portion 3A has no unevenness and the appearance is improved. In addition, page turning can be performed smoothly.

  In the binder 1A of the first embodiment, the back portion 2A has a plurality of engagement protrusions corresponding to the paper 4 in which the binding holes 4a are pre-opened by 2 holes, 3 holes, 4 holes, or the like. Any one of 5A and the engagement hole 6A may be formed in accordance with the arrangement of the binding holes 4a of the paper 4 in which the binding holes 4a are opened in advance by 2 holes, 3 holes, or 4 holes.

  In the binder 1A, the back portion 2A and the ring portion 3A are independent components. Therefore, by disposing the engagement protrusion 5A and the engagement hole portion 6A as described above, even with multi-hole paper such as 30 holes, 2 holes The binder 1 </ b> A can be configured using one type of back portion 2 </ b> A even with paper having three holes or four holes.

  Moreover, if it cuts and uses it according to the size of the paper 4 which binds back part 2A, it can respond to the paper 4 (A4, B5, etc.) of several different types.

  Furthermore, in the binder 1A of the first embodiment, the shapes of the engagement protrusions 5A and 5B and the engagement hole portions 6A and 6B are circular, but may be other shapes, for example, a square.

<Configuration Example of Binder of Second Embodiment>
FIG. 5 is a perspective view showing an example of a state in which the binder 1B of the second embodiment is assembled, FIG. 6 is a plan view showing an example of a usage state of the binder 1B of the second embodiment, and FIG. It is a disassembled block diagram which shows an example of the state before use of the binder 1B of embodiment. Here, in the binder 1B of the second embodiment, parts having the same configuration as the binder 1A of the first embodiment will be described with the same numbers.

  The binder 1B of the second embodiment includes a back part 2B and a ring part 3B. The back portion 2B is a thin plate-like member having a length corresponding to the length of the paper 4 to be bound, and a plurality of engagement protrusions 5A arranged in a line in the length direction at a predetermined interval. Is provided. The back portion 2A is made of, for example, a resin that is flexible and elastically deformable, and the engagement protrusion 5A is integrally formed.

  The engagement protrusion 5 </ b> A is an example of a back engagement portion, and is arranged, for example, according to the interval between the binding holes 4 a formed in the paper 4. The shape of the engaging protrusion 5A is the same as that of the engaging protrusion 5A described in the binder 1A of the first embodiment, and includes a locking portion 5h formed with an introduction portion 5i on the distal end side. However, the height of the portion where the ring portion 3B of the engaging protrusion 5A is fitted is substantially equal to about twice the thickness of the ring portion 3B.

  The ring portion 3B is a thin plate-like member having a width that enters the binding hole 4a of the paper 4 as shown in FIG. 6A, and the engagement hole portion 6B has a length as shown in FIG. 7B. It is formed only at both ends on one end side and the other end side in the direction. The ring portion 3B is made of, for example, a resin that is flexible and elastically deformable, and is formed through the engagement hole 6B.

  The engagement hole portion 6B is an example of a ring engagement portion, and has a circular shape into which the engagement protrusion 5A of the back portion 2B fits as shown in FIG. The hole diameter of the engagement hole portion 6B is configured to be smaller than the diameter of the locking portion 5h of the engagement protrusion 5A.

<Use Example of Binder of Second Embodiment>
FIG. 8 is a block diagram showing an example of use of the binder 1B of the second embodiment. Next, an example of use of the binder 1B of the second embodiment will be described with reference to FIGS. Here, FIG. 8 (a-1, 2) shows a case where the number of sheets 4 to be bound is small, and FIG. 8 (b-1, 2) shows a case where the number of sheets 4 to be bound is large.

  First, the back portion 2B and the ring portion 3B are separated, and a plurality of types of ring portions 3B having different lengths are prepared according to the number of sheets 4 to be bound. As shown in FIG. 8A-1, when the number of sheets 4 to be bound is small, as shown in FIG. 8A-2, a short ring portion 3B having a length L1 is used, and FIG. As shown in (-1), when the number of sheets 4 to be bound is large, as shown in FIG. 8 (b-2), a long ring portion 3B ′ having a length L2 is used.

  In an example using the ring portion 3B, the ring portion 3B is passed through the binding holes 4a of the stacked sheets 4. Then, the engagement hole 6B (1) on one end side of the ring portion 3B is fitted into the engagement protrusion 5A at a predetermined position of the back portion 2B.

  When the engagement hole 6B of the ring portion 3B is fitted into the engagement protrusion 5A of the back portion 2B, the ring portion 3B is connected to the introduction portion 5i of the engagement protrusion 5A, as in the usage example of the binder 1A of the first embodiment. The engagement hole portion 6B is gradually pushed along the taper shape, and gets over the engagement portion 5h of the engagement protrusion 5A. In the ring portion 3B, when the engaging hole portion 6B gets over the engaging portion 5h of the engaging protrusion 5A, the shape around the engaging hole portion 6B is restored.

  As described above, the hole diameter of the engagement hole 6B of the ring portion 3B is smaller than the diameter of the locking portion 5h of the engagement protrusion 5A. Therefore, when the engagement hole 6B fits into the engagement protrusion 5A, the engagement The locking portion 5h of the protrusion 5A serves as a retaining member, and the ring portion 3B is held by the back portion 2B.

  When the engagement hole 6B (1) on one end side of the ring portion 3B is fitted to the engagement protrusion 5A on the back portion 2B, the ring portion 3B is bent in a loop shape, and the engagement hole portion on the other end side of the ring portion 3B. 6B (2) is fitted in the same engagement protrusion 5A as the engagement hole 6B (1) on one end side.

  Since the height of the portion of the engagement protrusion 5A into which the ring portion 3B fits is substantially equal to the thickness of the two ring portions 3B, as described above, the engagement hole portion 6B on one end side of the ring portion 3B ( 1) is fitted to the engagement protrusion 5A of the back portion 2B, and the engagement hole 6B (2) on the other end side of the same ring portion 3B is fitted to the same engagement protrusion 5A, so that the ring portion 3B has an end-to-end portion. It overlaps and is fitted to one engagement protrusion 5B.

  Then, the ring portion 3B is formed in a loop shape, and a plurality of sheets 4 are bound in a state where the pages can be turned. Since the paper 4 has a plurality of binding holes 4a, the ring portion 3B is passed through all of the binding holes 4a or any binding holes 4a selected as necessary, as described above. The end portion of the ring portion 3B is overlapped with the engagement hole portion 6B in the engagement protrusion 5A to constitute a loop-shaped ring portion 3B.

  Here, since the engagement protrusion 5A of the back portion 2B is arranged in accordance with the interval between the binding holes 4a of the paper 4, it is possible to attach the ring portion 3B to correspond to all the binding holes 4a, It is also possible to attach the ring portion 3B so as to correspond to an arbitrary binding hole 4a.

  When the number of sheets 4 to be bound is small, the loop diameter of the ring portion 3B may be small. For this reason, the ring part 3B with a small loop diameter can be formed by using the ring part 3B with a short length L1, as shown in FIG. 8 (a-1). On the other hand, when the number of sheets 4 to be bound is large, it is necessary to increase the loop diameter of the ring portion 3B. Therefore, by using the ring portion 3B ′ having a long length L2, a ring portion 3B ′ having a large loop diameter can be formed as shown in FIG.

  As a result, like the binder of the first embodiment, the ring portion 3B is selected from the ring portions 3B having different lengths according to the number of sheets 4 to be bound, and the like. It can cope with the difference in the number of sheets to be bound. Further, since the back portion 2B is a component independent of the ring portion 3B, if the size of the paper 4 to be bound is the same, one type of back portion 2B can cope with the difference in the number of sheets 4 to be bound.

  Accordingly, it is possible to reduce the types of parts prepared corresponding to the difference in the number of sheets 4 to be bound, to reduce costs, and to easily manage consumables inventory.

  Moreover, since the engaging part of the back part 2B with respect to the ring part 3B is formed in a line, the width | variety of the back part 2B can be narrowed.

  In the binder 1B of the second embodiment, the shape of the engagement protrusion 5A and the engagement hole 6B is circular, but may be other shapes, for example, a quadrangle. Further, the engagement hole portion 6B may have a shape in which a part in the circumferential direction that is an end portion of the ring portion 3B is opened.

<Configuration Example of Binder of Third Embodiment>
9 is a perspective view showing an example of the assembled state of the binder 1C of the third embodiment, FIG. 10 is a plan view showing an example of the used state of the binder 1C of the third embodiment, and FIG. It is a disassembled block diagram which shows an example of the state before use of the binder 1C of embodiment.

  The binder 1C of the third embodiment includes a back part 2C and a ring part 3C. The back portion 2C is a thin plate-shaped member having a length corresponding to the length of the paper 4 to be bound, and arranged in a line in the length direction at intervals corresponding to the binding holes 4a of the paper 4, for example. A first row of engagement hole portions 7L and a second row of engagement hole portions 7R arranged in parallel with the first row of engagement hole portions 7L at the same interval as the first row of engagement hole portions 7L are provided. . The back portion 2C is made of, for example, a resin that is flexible and elastically deformable, and the engagement holes 7L and 7R are formed in a concave shape.

  The engagement holes 7L and 7R are an example of a back engagement part, and the cross-sectional shape is, for example, a circular hole according to the shape of the engagement protrusion 8 formed on the ring part 3C.

  The ring portion 3C is a thin plate-like member having a width that fits into the binding hole 4a of the paper 4 as shown in FIG. 10 (a), and the engagement protrusion 8 is in the length direction as shown in FIG. 11 (b). It is formed only at both ends on one end side and the other end side. The ring portion 3C is made of, for example, a resin that is flexible and elastically deformable, and the engagement protrusion 8 is integrally formed.

  The engagement protrusion 8 is an example of a ring engagement portion, and has a cylindrical shape that fits into the engagement holes 7L and 7R of the back portion 2C. The diameter of the engagement protrusion 8 is slightly larger than the diameter of the engagement holes 7L and 7R. Then, the engagement protrusion 8 is press-fitted and held in the engagement holes 7L and 7R.

<Use Example of Binder of Third Embodiment>
FIG. 12 is a configuration diagram showing an example of use of the binder 1C of the third embodiment. Next, an example of use of the binder 1C of the third embodiment will be described with reference to FIGS. Here, FIG. 12 (a-1, 2) shows a case where the number of sheets 4 to be bound is small, and FIG. 12 (b-1, 2) shows a case where the number of sheets 4 to be bound is large.

  First, the back portion 2C and the ring portion 3C are separated from each other, and a plurality of types of ring portions 3C having different lengths are prepared according to the number of sheets 4 to be bound. As shown in FIG. 12 (a-1), when the number of sheets 4 to be bound is small, as shown in FIG. 12 (a-2), a short ring portion 3C having a length L1 is used. As shown in (-1), when the number of sheets 4 to be bound is large, a long ring portion 3C ′ having a length L2 is used as shown in FIG. 12 (b-2).

  In the example using the ring portion 3C, the ring portion 3C is passed through the binding holes 4a of the stacked sheets 4. Then, the engagement protrusion 8 (1) on one end side of the ring portion 3C is press-fitted into the engagement hole portion 7L at a predetermined position in the first row of the back portion 2c.

  When the engagement protrusion 8 of the ring portion 3C is press-fitted into the engagement hole portion 7L of the back portion 2C, one end side of the ring portion 3C is held by the back portion 2C.

  When the engagement protrusion 8 (1) on one end side of the ring portion 3C is press-fitted into the engagement hole 7L in the first row of the back portion 2C, the ring portion 3C is bent in a loop shape, and the other end side of the ring portion 3C is The engagement protrusion 8 (2) is press-fitted into the second row of engagement holes 7R located adjacent to the first row of engagement holes 7L into which the engagement protrusion 8 (1) on one end side is fitted.

  Thereby, the ring portion 3C is held by the back portion 2C in such a manner that the end portions do not overlap with each other, and the end portions face each other, the ring portion 3C forms a loop shape, and a plurality of sheets 4 are turned over. It is bound as possible.

  Since the paper 4 has a plurality of binding holes 4a, the ring portion 3C is passed through all the binding holes 4a or any binding holes 4a selected as necessary, as described above. The engagement protrusion 8 (1) on one end side of the ring portion 3C is fitted into the engagement hole 7L in the first row, and the engagement protrusion 8 (2) on the other end side is engaged in the engagement hole 7R in the second row. The loop-shaped ring portion 3C is configured by fitting.

  Here, since the engagement holes 7L and 7R of the back portion 2C are arranged in accordance with the interval of the binding holes 4a of the paper 4, it is possible to attach the ring portions 3C so as to correspond to all the binding holes 4a. In addition, it is possible to attach the ring portion 3C to correspond to an arbitrary binding hole 4a.

  When the number of sheets 4 to be bound is small, the loop diameter of the ring portion 3C may be small. For this reason, by using the ring portion 3C having a short length L1, as shown in FIG. 12 (a-1), the ring portion 3C having a small loop diameter can be formed. On the other hand, when the number of sheets 4 to be bound is large, it is necessary to increase the loop diameter of the ring portion 3C. Therefore, by using the ring portion 3C ′ having a long length L2, a ring portion 3C ′ having a large loop diameter can be formed as shown in FIG.

  As a result, like the binder of the first embodiment, the ring portion 3C is selected from the ring portions 3C having different lengths according to the number of sheets 4 to be bound, and the like. It can cope with the difference in the number of sheets to be bound. Further, since the back part 2C is a component independent of the ring part 3C, if the size of the paper 4 to be bound is the same, one type of back part 2C can cope with the difference in the number of sheets 4 to be bound.

  Accordingly, it is possible to reduce the types of parts prepared corresponding to the difference in the number of sheets 4 to be bound, to reduce costs, and to easily manage consumables inventory.

  In addition, although the shapes of the engagement hole portions 7L and 7R and the engagement protrusion 8 are circular, other shapes may be used, for example, a quadrangle. Further, two rows of engagement protrusions may be provided on the back part 2C side, and an engagement hole part in which the engagement protrusion fits at both ends of the ring part 3C may be provided.

<Modified example of engaging protrusion and engaging hole>
FIG. 13 is a configuration diagram showing a modification of the engagement protrusion and the engagement hole in each embodiment. In each embodiment, the shape of the engagement protrusion and the engagement hole is circular. However, other shapes may be used, for example, a quadrangle. For example, as shown in FIG. 13 (a), the engagement protrusion 9 formed on the back portion or the ring portion is a pair of hook-shaped members having a square cross-sectional shape and a diameter stop portion 9a on the tip side. It may be configured. In addition, when the cross-sectional shape of the engagement protrusion 9 is a square shape, the engagement hole is a square shape.

  Further, for example, as a modification of the ring portion 3B of the binder 1B of the second embodiment, the engagement hole portion 10 has a circumferential direction that becomes an end portion of the ring portion 3 as shown in FIG. A shape in which a part is opened and the opening 10a is provided may be used.

  The present invention is applied to a multi-hole binder that binds a sheet having a binding hole.

It is a perspective view which shows an example of the state which assembled the binder of 1st Embodiment. It is a top view which shows an example of the use condition of the binder of 1st Embodiment. It is a disassembled block diagram which shows an example of the state before use of the binder of 1st Embodiment. It is a block diagram which shows the usage example of the binder of 1st Embodiment. It is a perspective view which shows an example of the state which assembled the binder of 2nd Embodiment. It is a top view which shows an example of the use condition of the binder of 2nd Embodiment. It is a disassembled block diagram which shows an example of the state before use of the binder of 2nd Embodiment. It is a block diagram which shows the usage example of the binder of 2nd Embodiment. It is a perspective view which shows an example of the state which assembled the binder of 3rd Embodiment. It is a top view which shows an example of the use condition of the binder of 3rd Embodiment. It is a disassembled block diagram which shows an example of the state before use of the binder of 3rd Embodiment. It is a block diagram which shows the usage example of the binder of 3rd Embodiment. It is a block diagram which shows the modification of the engagement protrusion and engagement hole part in each embodiment.

Explanation of symbols

1A, 1B, 1C ... Binder, 2A, 2B, 2C ... Back, 3A, 3B, 3C, 3 ... Ring part, 4 ... Paper, 4a ... Binding hole, 5A, 5B, 8, 9 ... engaging protrusion, 6A, 6B, 7L, 7R, 10 ... engaging hole

Claims (4)

A ring part that is inserted into a binding hole formed on a sheet and binds a plurality of sheets;
It is composed of a member independent of the ring part, and includes a back part to which a plurality of the ring parts are attached.
The ring portion includes a ring engaging portion attached to the back portion only at one end side and the other end side in the length direction of the ring portion,
The back is the back engagement portion prior Symbol ring engaging portion is mounted in front Symbol ring portion, provided in accordance with the arrangement of the binding hole of the sheet,
The back engaging portion is configured as an engaging protrusion protruding in a convex shape, the ring engaging portion is configured as a concave engaging hole portion that fits into the engaging protrusion, and the ring portion is formed in a loop shape. The engagement hole portion on one end side and the engagement hole portion on the other end side of the overlapped ring portion are attached to the engagement protrusion of the back portion, and the ring portion is attached to the back portion. Characteristic binder. A ring part that is inserted into a binding hole formed on a sheet and binds a plurality of sheets;
It is composed of a member independent of the ring part, and includes a back part to which a plurality of the ring parts are attached.
The ring portion includes a ring engaging portion attached to the back portion only at one end side and the other end side in the length direction of the ring portion,
The back portion includes a back engagement portion to which the ring engagement portion of the ring portion is attached according to the arrangement of the binding holes of the paper,
The back engagement portions are arranged in two rows, and the ring engagement portion on one end side of the ring portion having a loop shape is attached to the back engagement portion in one row of the back portion, and the ring portion the ring engaging portion of the other end, said back other attached to said back engagement portion of the column, features and to Luba Indah said ring portion is attached to the back. One of the ring engaging portion and the back engaging portion is configured as an engaging protrusion protruding in a convex shape, and the other is configured as a concave engaging hole portion into which the engaging protrusion fits. The binder according to claim 2 . The back engaging portion is configured as an engaging protrusion protruding in a convex manner in one row, and the concave engaging hole portion in the other row,
The ring engaging portion includes a concave engaging hole portion into which the engaging protrusion of the back engaging portion fits on one end side of the ring portion, and the engaging hole portion of the back engaging portion fits therein. An engagement protrusion protruding in a convex shape is provided on the other end side of the ring part,
The engagement hole portion on one end side of the ring portion having a loop shape is attached to the engagement protrusion in one row of the back portion, and the engagement protrusion on the other end side of the ring portion is formed on the back portion. The binder according to claim 2 , wherein the ring portion is attached to the back portion by being attached to the engagement hole portion of the other row .

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