JP3087132U - Plastic bindings for binders - Google Patents

Abstract

(57) [Problem] To provide a binder for a binder which can be transported without being bulky, can easily correct spelling errors of a mount, and can be easily incinerated. The apparatus includes a main body member and a connecting member mounted on the main body member. The main body member 10 is integrally formed of plastic, and has side plates 15, 15 connected to both sides of the substrate 12 fixed to the spine 2 in a bendable manner, and end plates 17, 20 can be bent at upper and lower ends of the substrate 12. Connected to
Can be developed into a flat plate. Guide grooves 25, 25 with narrowed open ends are provided on the inner side of the upright side plates 15, 15, and upper and lower end plates 17, 20 connect the upper end and the lower end of the side plates 15, 15 to each other. The connecting member 11 is integrally formed of plastic, and has sliding pieces 63, 63 at both ends of a connecting piece 62 that passes through a binding hole of the mount. The slide piece 63 is fitted into the guide groove 25 and can slide in the up-down direction, and engages with the inner surface of the guide groove 25 on the opening end side, and does not come off the guide groove.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a plastic binding device constituting a binder for binding a mount or a catalog to which a sample such as a carpet, a curtain, and a cloth is attached.

[0002]

[Prior art]

 Conventional metal binders as shown in FIGS. 15 to 16 are generally used as binders for a conventional binder used to form a sample book by binding a mount on which a sample such as a carpet, curtain, cloth, or the like is stuck. It was a target.

The binding device a comprises a main body member b formed by bending a metal plate into a box shape, and a connecting member d mounted on the main body member b and supporting a mount c. b is the longitudinal length of the substrate m fixed to the inner side j of the spine e of the spine e by joining the front cover f and the back cover g to both longitudinal sides of the spine e. Side plates n, n are bent at right angles on both sides, and an end plate p is formed at the lower end of the substrate m at right angles so as to cover a lower end opening between the two side plates n, n. . The tip portions of the side plates n, n are bent outward in a U-shape, and the U-shaped bent pieces q, q form opposed guide grooves r, r. The connecting member d is formed by bending a metal wire into a U-shape, and can be inserted through the binding hole s of the mount c, and both connecting pieces t for connecting between the left and right side plates n, n. At the end, slide pieces v, v fitted in the left and right guide grooves r, r were provided.

Then, the connecting piece t of the connecting member d is inserted into each of the plurality of upper and lower tiers, for example, four upper and lower tiers of the binding holes s provided at the base end side of the required number of mounts. With the left and right slide pieces v, v of each connecting member fitted in the left and right guide grooves r, r, the end faces w, w of the left and right U-shaped bent pieces q, q are shown in FIGS. As shown in the figure, the slide piece v1 of the connecting member d1 located at the lower end is swaged from above and below, so that the slide piece v1 slides inadvertently upward, and the mount c becomes the main body member b. Restricting projections y, y for preventing escape from the vehicle.

[0005]

[Problems to be solved by the invention]

 However, when the binder z provided with the binding device a having the above-described configuration is used, there are the following problems. (1) As shown in FIGS. 15 and 16, the main body member b is formed in a box shape by bending a metal plate, and the form is fixed. When the paper h is stacked and transported in an unfolded state, the piled state is bulky and requires a large amount of transportation space, which raises a problem of increasing transportation costs.

(2) In order to prevent the stapled backing paper from coming off the main body member, careless slide of the connecting member d1 located at the lowermost end is provided to the regulating projections y, provided in the guide grooves. In this case, the connecting members d are slid upward F (FIG. 17) to be attached to the main body member b when there is a misspelling in the backing paper or when the backing paper is to be added. However, there is a problem in that the lowermost connecting member d1 is caught by the regulating protrusion y and is difficult to remove. Further, even when each connecting member d is mounted on the main body member b after respelling, there is a problem that the regulating protrusion y is caught and it is difficult to move the lowermost connecting member d1 downward.

(3) Unnecessary binders have conventionally been incinerated. However, after incineration, the metal main body member must be collected.

An object of the present invention is to provide a plastic binding device for a binder that can solve such a conventional problem.

[0009]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention employs the following solutions. That is, the plastic binding device for a binder according to the present invention includes a main body member fixed to the inner surface side of the spine and a connecting member mounted on the main body member to support the backing paper. The main body member is integrally formed of plastic, and side plates are connected to the longitudinal sides of the substrate fixed to the inner surface side of the spine so that the side plates can be bent, and the end plate is bent at the upper and lower ends of the substrate. The substrate, both side plates, and both end plates are formed in a flat plate shape in a state where both side plates and both end plates are unfolded, and both side plates are erected substantially at right angles to the opposed state. A guide groove extending in the vertical direction and opening inward is formed on the inner surface side of the both side plates, and the groove width of the guide groove is narrowed at its open end, The upper ends of the guide grooves are both open, or the lower ends of both guide grooves are both open, so that the upper ends of both side plates standing substantially at right angles are detachably connected by the upper end plate standing substantially at right angles. And the lower end phases of the upright side plates There have been made as is connected substantially at right angles to upright the lower end surface plates was. The connecting member is integrally formed of plastic, can be inserted through a binding hole provided in the backing paper, and is provided with sliding pieces at both ends of a connecting piece that connects the left and right side plates standing up, The slide piece is fitted into the guide groove so as to be slidable up and down in the guide groove, and a portion of the slide piece fitted into the guide groove is engaged with the inner surface of the guide groove on the opening end side. The fitting prevents the fitted portion from dropping out of the guide groove. The term "substantially right angle" means a right angle or an angle close to a right angle.

In the binding device, in the upright state, the upper end plate removably connects the upper ends of the left and right side plates upright, and the lower end plate is upright in the upright state. It is preferable that the lower ends of the left and right side plates are detachably connected to each other.

[0011] Further, in the binding device, the guide groove may have a cross-sectional shape formed into a 3/4 arc shape, and the guide groove may have a narrowed open end.

Further, in the binding device, a stopper piece for supporting the slide piece, which slides the left and right guide grooves in a vertical direction, from below is formed on a groove bottom near a lower end of the left and right guide grooves. Good.

In the binding device, it is preferable that the upper end plate is connected to an upper end of the base plate at a central portion in the left-right direction.

In the binding device, the main body member and the connecting member are preferably made of polypropylene.

Further, in the binding device, it is preferable that the connecting member is configured to have a U-shape in a front view. Alternatively, it may be configured to have an I-shape when viewed from the front.

[0016]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4, a plastic binding device for a binder (hereinafter referred to as a binding device) 1 according to the present invention includes a spine 2 having a front cover 3 and a back cover 5 joined to both longitudinal sides of the spine 2. 2 includes a main body member 10 fixed to the inner surface 7 and a connecting member 11 that supports the mount 4 and is attached to the main body member 10.

The main body member 10 is integrally formed of plastic as a whole. For example, they are integrally formed using polypropylene, which is relatively inexpensive and excellent in strength, and does not cause environmental problems such as generation of dioxin during incineration. As shown in FIGS. Side plates 15, 15 are connected to both sides of the longitudinal direction of a substrate 12, which is fastened to the inner surface 7 of the base 2 over substantially the entire length thereof, via thin hinge portions 13, 13 in a bendable manner. An upper end plate 17 is flexibly connected to the upper end of the substrate 12 via a thin hinge portion 16, and the lower end plate 20 is connected to the lower end of the substrate 12 via a thin hinge portion 19. Are connected to bendable. In a state where the side plates 15, 15 and the upper and lower end plates 17, 20 are unfolded, the substrate 12, the both side plates 15, 15, and the upper and lower end plates 17, 20 are formed in a flat plate shape as shown in FIGS. It is made to present.

Further, the right and left sides of the substrate 12 near the upper and lower ends and the central portion are used for fastening the substrate 12 to the spine 2 using, for example, a caulking rivet 18 (FIG. 1) made of resin. 3 (FIGS. 3 and 4) are provided in a left-right facing state.

As shown in FIG. 1, in a state where the left and right side plates 15, 15 are erected at a substantially right angle toward the front in a facing state (in the figure, a state of erected at a right angle is shown). Guide grooves 25, 25 extending in the vertical direction and having upper and lower ends 22, 23 open and open inward are formed in the front portions on the inner surfaces of both side plates 15, 15 so as to be formed in an opposed state. I have. The cross-sectional shape of the guide groove 25 is, for example, a 3/4 arc shape as shown in FIGS. 5 and 3, and the groove width of the guide groove is such that the inward opening end 26 is narrowed. I have. In the present embodiment, as shown in FIGS. 1 and 3 to 4, stopper pieces 29, 29 are provided on the bottoms 27, 27 of the left and right guide grooves 25, 25 near the lower ends thereof. It protrudes in the facing state.

As shown in FIGS. 1, 3 and 4, lower mounting holes 31, 31 are provided symmetrically in lower portions 30, 30, on the base end side of the left and right side plates 15, 15, respectively. The mounting hole 31 is formed in a keyhole shape in which a long hole 33 extending in a direction inclined downward and forward and having a groove width smaller than the diameter of the circular hole 32 is continuously provided at the lower end of the circular hole 32. Is presented. On the other hand, as shown in FIG. 1 and FIGS. The upper mounting holes 39, 39, which are formed in an L-shape with the engagement holes 37 forward (forward when the both side plates 15, 15 stand up), are provided symmetrically.

When the upper end plate 17 stands upright at a substantially right angle toward the front (in the figure, the upright end plate 17 is shown upright at right angles), as shown in FIG. Substantially half of the opening at the upper end of the groove 40 formed between the plates 15 and 15 on the substrate side is closed. In the unfolded state, as shown in FIG. 4, the end plate 17 has an upper edge 41 that is horizontal, and left and right portions of the lower edge thereof have inclined edges 42 that are inclined upward toward the left end or the right end. , 42, and an intermediate edge 43 between the left and right inclined edges 42, 42 is connected to the upper end 45 of the substrate 12 via the hinge portion 16.

As shown in FIGS. 3 and 4, columnar shafts 47, 47 project from left and right side surfaces 46, 46 of the upper end plate 17. Also, a disc-shaped retaining piece 49 having a large diameter is protruded concentrically.

However, as shown in FIGS. 2 and 5, in order to connect the left and right side plates 15, 15 with each other with the end face plate 17 in an upright state, the hinge portion 16 is connected to the hinge portion 16 in FIG. ), The end face plate 17 is rotated in the upright direction while being elastically deformed into a flatly crushed state in the front-rear direction, so that the left and right shafts 47, 47 are moved in the left and right L-shape. Position the upper holes 48, 48 of the introduction grooves 38 of the mounting holes 39, 39 on the eggplant. Thereafter, when the end face plate 17 is further rotated in the upright direction, the left and right shaft portions 47, 47 are positioned in the engagement holes 37 at the front end of the upper mounting holes 39 by the elastic restoring action of the hinge portions 16. Then, in this state, the upper end face plate 17 is held so as not to be deployed. As shown in FIGS. 5 and 9, the left and right retaining pieces 49, 49 abut against the outer surfaces 51, 51 of the side plates 15, 15, so that the side plates 15, 15 are in a non-deployable standing state. Will be retained.

On the other hand, as shown in FIG. 1, the lower end face plate 20 is in a state of standing at a substantially right angle (in the figure, a state of standing at a right angle is shown), and the upright side plates 15, 1 are shown. The lower half of the opening at the lower end of the groove part 40 formed between the five is closed on the substrate side, and as shown in FIGS. 3 and 4, presents a rectangular plate shape that is long in the left-right direction. An upper edge 52 is connected to the lower end 53 of the substrate 12 via the hinge 19.

The left and right side surfaces 55 of the lower end plate 20 are provided with columnar shaft portions 57, 57, and the end of the shaft portion 57 has a disk-like shape having a diameter larger than that of the shaft portion 57. The retaining piece 59 is provided protruding concentrically.

However, in order to connect the left and right side plates 15, 15 with the end face plate 20 in the upright state, as shown by a dashed line in FIG. When the both side plates 15 are erected in a state in which the hinge portions 19 are strongly bent upward against the elasticity of the hinge portions 19, the left and right disk-shaped retaining pieces 59, 59 are inserted into the left and right circular holes 32. , 32, and the left and right shaft portions 57, 57 are present in the circular holes 32, 32. Then, as the lower end face plate 20 is raised by the elastic restoring action of the hinge portion 19 or by a forcible rotation operation by hand, the left and right shaft portions 57, 57 , 33 toward the lower end thereof, and finally the lower end face plate 20 becomes a substantially right-angled upright state, and is maintained in a state where its development is prevented. As shown in FIGS. 1 and 9, the left and right disk-shaped stopper pieces 59 abut against the outer surfaces 51, 51 of the side plates 15, 15 so that the side plates 15, 15 cannot be deployed. It is kept upright.

As shown in FIGS. 1, 5 and 8 to 9, the connecting member 11 is integrally formed of plastic, for example, polypropylene, and has a U-shape in a front view. The binding holes 61 (FIG. 8) provided in the base end 60 of the mount 4 can be inserted and the left and right side plates 15, 15 in the upright state are connected. Are formed in such a manner that the slide pieces 63, 63 are bent. The diameter of the slide piece 63 is substantially equal to the inner diameter of the guide groove 25, and at a portion 66 (FIG. 5) of the base end 65 of the slide piece 63 exposed at the open end 26, The ends of the connecting pieces 62 are connected. In the present embodiment, the connecting portion 67 of the connecting piece to the slide piece 63 is formed to have a slightly smaller diameter.

Then, as shown in FIG. 8, the connecting member 11 having such a configuration is such that the left and right slide pieces 63, 63 project upward, and the base ends 65 of the two slide pieces 63, 63. , 65 are fitted into the guide grooves 25, 25 through the upper end openings 64, 64 of the left and right guide grooves 25, 25, and the left and right slide pieces 63, 63 move the left and right guide grooves 25, 25 downward. You can slide. The base pieces 65, 65 of the slide pieces 63, 63 come into contact with the stopper pieces 29, 29 projecting from the bottoms of the left and right guide grooves 25, 25 as shown in FIG. The connecting member 11 is supported by the stopper pieces 29, 29, and sliding downward therefrom is prevented.

However, in order to form the binder 68 shown in FIGS. 1 and 2 by using the binding device 1 having such a configuration, as shown in FIG. Using the crimping rivet 18 made of, for example, a resin 21, it is fixed to the inner side 7 of the spine 2 as shown in FIG. 1.

Thereafter, the lower end face plate 20 is strongly bent upward as indicated by a dashed line in FIG. 7A, and the both side plates 15, 15 are erected. As a result, the disc-shaped stopper pieces 59 projecting from the left and right ends of the end face plate 20 are inserted into the circular holes 32 of the lower mounting holes 31. Thereafter, as the lower end plate 20 rotates in the upright direction by the elastic restoring action of the hinge portion 19, the left and right shaft portions 57, 57 move up the left and right long holes 33, 33. Then, the lower end plate 20 is brought into a substantially right-angled upright state by the elastic restoring action of the hinge portion 19 or by the forcible turning operation by hand. As a result, the lower end plate 20 is prevented from being unfolded, and the left and right disc-shaped retaining pieces 59, 59 abut against the outer surfaces 51, 51 of the both side plates 15, 15, and the both side plates 15 , 15 are held in a non-deployable standing state.

In this state, the upper and lower four connecting members 11 in which the connecting pieces 62 are inserted into the axis matching binding holes 61 provided in, for example, four stages in the vertical direction on the base end side of the required number of mounts 4. , 11, 11, 11 with the left and right slide pieces 63, 63 facing upward as shown in FIG. 8, and the base end sides 65, 65 of the slide pieces 63, 63 are aligned with the left and right guide grooves 25, 25. Is aligned with the upper end openings 64, 64 in the open state, and is pushed downward. As a result, as shown in FIG. 9, all the left and right slide pieces 63 of the four connecting members 11, 11, 11, 11 are fitted into the left and right guide grooves 25, 25, and the lowermost end is formed. , The base ends 65, 65 of the left and right slide pieces 63, 63 of the connecting member 11a are supported by the stopper pieces 29, 29. As shown in FIG. 9, the lower end 70 of each mount 4 is substantially in contact with or floats on the inner surface 71 of the lower end plate 20, and the upper end 72 of the mount is slightly lower than the inner surface 73 of the upper end plate 17. Side. As a result, all or a part of the weight of the mount group 75 is supported by the stopper pieces 29, 29, so that an external force for rotating the lower end face plate 20 in the developing direction is less likely to act, and the mount group 75 Is not restricted by the upper end face plate 17 and does not come off upward. In FIG. 9, for convenience of explanation, only one mount 4 is indicated by a solid line, and the thickness of the mount 4 is larger than the actual thickness.

The binding hole 61 provided in the base end portion of the backing sheet 4 has a slightly elongated shape in the front-rear direction, for example, as shown in FIG. 8, and the width of the binding hole 61 in the vertical direction. Is set slightly larger than the diameter of the connecting piece 62. The length of the slide piece 63 of the connecting member 11 requires that the connecting member 11 can be passed through the binding hole 61 while rotating from the tip end side of the slide piece 63 toward the connecting piece 62. It is set to about 25 mm.

Since the cross section of the left and right guide grooves is formed in a 3/4 arc shape as described above, the left and right slide pieces 63, 63 are fitted into the left and right guide grooves 25, 25. As a result, as described above, the portion 77 of the slide piece 63 fitted into the guide groove 25 engages with the inner surface 79 on the opening end 26 side of the guide groove as shown in FIG. Thereby, it is possible to reliably prevent the fitted portion 77 from dropping out of the guide groove 25, and to smoothly slide the slide pieces 63, 63 in the vertical direction. In addition, since the cross-sectional shape of the guide groove 25 is formed in a 3/4 arc shape and the groove width at the open end of the guide groove can be relatively large, the strength of the connecting portion of the connecting piece 62 with respect to the slide piece 63 is increased. Can be secured well.

After binding the mount group 75 in this manner, the left and right shaft portions 47, 47 of the upper end face plate 17 are attached to the L-shaped mounting member as shown in FIG. When the end face plate 17 is set in the upright position by aligning with the upper end openings 48, 48 of the holes 39, 39, the left and right shaft portions 47, 47 move through the mounting holes 39, 39 to engage the front end. It is located in the hole 37. As a result, the expansion of the end face plate 17 is prevented, and the left and right disc-shaped retaining pieces 49, 49 abut against the outer surfaces 51, 51 of the both side plates 15, 15, whereby the both side plates 15 are formed. , 15 are held in a non-deployable standing state as shown in FIG. The upper and lower end plates 17 and 20 are integrated with the substrate 12, and the left and right side plates 15 and 15 are connected by the integrated upper and lower end plates 17 and 20. The upper end and the lower end of 15, 15 can be stably connected to the substrate 12. As a result, the box-shaped portion 78 shown in FIG. 9 formed by the substrate 12, the left and right side plates 15, 15 and the upper and lower end plates 17, 20 is stably maintained.

In addition, since the fitted portion 77 does not come out of the guide groove 25 (FIG. 5), the both side plates 15, 15 are connected by upper and lower end plates 17, 20. The intermediate portion is also connected by the four connecting members 11, 11, 11, 11. As a result, the intermediate portions of the side plates 15, 15 are less likely to swell and deform.

By binding the upper and lower end face plates 17 and 20 in this manner, the lower end 70 of the backing sheet 4 is supported by the stopper piece 29 and the lower end face plate 20 as shown in FIG. The escape in the direction is prevented, and the upper end 72 of the mount 4 is in contact with the inner surface 73 of the upper end plate 17, so that the mount 75 is prevented from slipping upward.

After binding the required number of mounts 4 to the binding device 1 and binding a sample book, if a spelling error is found, the upper end plate 17 is pressed toward the substrate 12. The hinges 16 are elastically deformed, and the shafts 47, 47 protruding from the left and right ends of the end face plate 17 are attached to the left and right mounting portions in the L-shape as shown by arrows in FIG. The upper end plate 17 is unfolded by removing it from the upper end openings 48, 48 of the holes 39, 39. Thereby, the mount group 75 can be extracted from the main body member 10 while sliding the connection members 11, 11, 11, 11 upward. After correcting the spelling mistake, the left and right slide pieces 63, 63 of each connecting member 11, 11, 11, 11 are fitted into the left and right guide grooves 25, 25 and slid downward in the same manner as described above. Thereafter, by returning the upper end face plate 17 to the upright state in the same manner as described above, the sample book can be bound correctly.

As shown in FIG. 10, the binder 68 provided with the binding device 1 having the above-described configuration is configured such that the upper and lower end face plates 17 and 20 and the left and right side plates 15 and 15 are in a developed state and the main body member 10 is formed into a flat plate shape. By deforming the cover 6 and flattening the cover 6, the bulk can be reduced and the covers can be overlapped with each other, so that the transportation efficiency can be improved and the transportation cost can be reduced.

When the used binder is incinerated, a plastic binding device such as polypropylene can be incinerated together with the cover. In particular, polypropylene, unlike vinyl chloride, has the advantage that it can be safely incinerated without requiring special incineration means to prevent the generation of harmful gases such as chlorine gas and dioxin.

[Other Embodiments] The present invention is not limited to the embodiments described above, and various design changes can be made within the description of “claims for registering utility models”. Of course there is. An example is as follows.

(1) As the plastic constituting the main body member 10 and the connecting member 11, besides the above-mentioned polypropylene, polyethylene, polyester, nylon, vinyl chloride, polycarbonate and the like can be adopted.

(2) The left and right guide grooves 25, 25 have both upper ends open, or both lower ends are open so that the connecting member 11 can be attached to and detached from the guide grooves. It is necessary to be in a state, and both upper and lower ends may be in an open state.

(3) If the groove width L of the guide groove 25 has a form in which the inward open end 26 is narrowed, the cross section is ／ as described in the above embodiment. In addition to being formed in a circular shape, the portion 77 of the connecting member 11 fitted into the guide groove 25 is engaged with the inner surface 79 on the opening end 26 side of the guide groove 25 so that the connection member 11 can be removed from the guide groove 25. For example, it may be formed in a polygonal shape such as a hexagon or an octagon as shown in FIGS.

(4) The connecting member 11 is provided with slide pieces 63, 63 at both ends of a connecting piece 62 which can pass through the binding holes 61 of the mount and connects the left and right side plates 15, 15 standing up. If the slide piece 63 is fitted in the guide groove 25 so as to be able to slide the guide groove 25 up and down, the slide piece 63 is formed in the U-shape shown in the embodiment. In addition, it may be formed in an I shape in a front view as shown in FIG. In this case, at both ends of the connecting piece 62 connecting the left and right side plates 15, 15, projecting pieces 81, 81 are formed to project in opposite directions to form a sliding piece 63, and the length of the sliding piece 63 is The connection piece 62 is set so as to be able to pass through the binding hole 61 provided in the backing paper 4 so as to be inserted into the binding hole 61, and is set to, for example, about 25 mm.

The connecting member 11 shown in FIG. 14 has a projecting portion 82 in which the sliding piece 63 of the U-shaped connecting member slightly projects in the opposite direction (projects about 5 mm).

The connecting member 11 may be configured such that a spherical slide piece is bulged at both ends of a connecting piece 62 for connecting both ends of both side plates 15, 15 bent at a substantially right angle.

Further, the connecting member 11 may be formed in a Z-shape in which the slide pieces 63, 63 are bent at opposite ends of the connecting piece 62.

[0048]

[Effect of the invention]

 The present invention has the following excellent effects. (1) In the binding device according to the present invention, the main body member can be formed into a flat plate shape by unfolding the side plates and the upper and lower end plates, so that the conventional main body member formed by bending a metal plate is a box. Unlike the bulky appearance of the mold, the bulk can be reduced. For this reason, when transporting the binder in a state in which the binding device is fixed, the cover can be spread and the main body member can also be expanded, so that the binder can be overlapped with reduced bulk. This can improve efficiency and reduce transportation costs. Also, in the case of transporting the main body member alone, it can be transported efficiently by reducing the transport space by expanding and superimposing the main body member in a flat plate shape, which can reduce the transport cost.

(2) With the binding device according to the present invention, the left and right guide pieces of the connecting member can be slid up and down without any obstacle in the left and right guide grooves. Since the slides of the connecting members are smooth as described above, when the spelling of the backing sheet occurs or when the backing sheet needs to be added, the backing sheet is expanded so that the backing sheet is attached to the main body member. It can be easily removed from the main body, and after it has been correctly adjusted, it can be easily re-spelled on the main body member, thus improving workability. In the conventional binding device formed by bending a metal plate, as described above, the regulating protrusion is formed by caulking to prevent the connecting member from being inadvertently dropped. There was a problem that the connecting member could not be smoothly attached or detached because it was caught when removing it from the main body member or reattaching it to the main body member, but the present invention has the advantage that it can solve such problems It has.

(3) Since the binding device according to the present invention is made of plastic including its main body member and the connecting member, the used binder can be completely incinerated. For this reason, there is no need to recover the metal main body members and the like after incineration as in the conventional binder. In particular, when polypropylene is used as a plastic, unlike when vinyl chloride is used, there is an advantage that it can be safely incinerated without generating dioxin and the like.

(4) Since the upper and lower end plates are arranged vertically above and below the substrate and the left and right side plates are connected to each other by the end plate, the left and right side plates in the upright state are connected to the upper and lower end plates. The box-shaped main body member constituted by the end face plate is extremely stable in strength. Further, since the guide grooves provided on the left and right side plates are configured such that the groove width is narrowed at the open end, the portion of the slide piece fitted into the guide groove is the open end of the guide groove. By engaging with the inner surface on the side, the fitted portion does not fall out of the guide groove, and therefore, the middle portion of the left and right side plates in the vertical direction is held by the connecting member, so that it is unlikely to bulge and deform. As described above, the box-shaped state of the main body member is stably held by the connection between the side plates by the upper and lower end plates and the connection between the side plates by the connection member.

(5) Particularly, when a stopper piece is protruded from the bottom of the guide groove at the lower end side of the left and right guide grooves, the stopper piece can support all or a part of the weight of the backing sheet. Unlike the case where the mount is supported only by the lower end plate, there is an advantage that the load on the lower end plate can be reduced and the mount can be stably supported.

(6) By forming the left and right guide grooves in a 3/4 arc shape in cross section, when the left and right slide pieces are fitted into the left and right guide grooves, the guide pieces of the slide pieces The portion fitted into the groove engages with the inner surface on the opening end side of the guide groove, so that the fitted portion can be reliably prevented from dropping out of the guide groove, and the vertical direction of the slide piece can be reduced. Can be smoothly performed. Moreover, since the guide groove is formed in a 3/4 arc shape in cross section and the groove width at the open end of the guide groove can be made relatively large, the strength of the connecting portion of the connecting piece with respect to the slide piece can be secured well. it can.

(7) In the case where the upper end plate is connected to the upper end of the substrate so as to be bent at the center in the left-right direction, the end plate is connected to the substrate over the entire length in the left-right direction. There is an advantage that the end face plate can be bent lightly as compared with the case of FIG.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view illustrating a binding device according to the present invention.

FIG. 2 is a partial perspective view showing a binder formed using the binding device.

FIG. 3 is a perspective view showing a main body member constituting the binding device in an expanded state.

FIG. 4 is a partial front view showing a main body member constituting the binding device in an expanded state.

FIG. 5 is a plan view showing a state in which upper ends of both standing side plates are connected to each other by an upper end plate;

FIG. 6 is a side view for explaining a method of connecting the upper ends of the upright side plates with an upper end plate and releasing the connection state.

FIG. 7 is a side view for explaining a procedure of connecting lower ends of the upright side plates with a lower end plate and releasing the connection state.

FIG. 8 is a perspective view showing a state in which a connecting member is attached to each binding hole of the mount group.

FIG. 9 is a cross-sectional view showing a state in which the upright side plates are connected by a connecting member in a state in which connecting pieces of the connecting members support the mount.

FIG. 10 is a partial perspective view showing a state where both the main body member and the cover are developed.

FIG. 11 is a cross-sectional view showing another mode of the guide groove in a state where a slide piece of a connecting member is fitted into the guide groove.

FIG. 12 is a cross-sectional view showing another mode of the guide groove in a state where a slide piece of a connecting member is fitted into the guide groove.

FIG. 13 is a front view showing another embodiment of the connecting member.

FIG. 14 is a front view showing another mode of the connecting member.

FIG. 15 is a perspective view illustrating a binder configured using a conventional binding device.

FIG. 16 is a plan view showing the binding device in a state where a cover is developed.

FIG. 17 is a cross-sectional view showing a state in which a slide piece of a connecting member located at a lower end is fixed to a guide groove in the binding device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 binding device 2 spine 6 cover 10 body member 11 connecting member 12 substrate 13 hinge portion 15 side plate 16 hinge portion 17 upper end plate 19 hinge portion 20 lower end plate 25 guide groove 29 stopper piece 31 lower mounting hole 39 upper Mounting hole 62 connecting piece 63 guide piece

Claims (8)

[Utility model registration claims] 1. A plastic binding device for a binder, comprising: a main body member fixed to an inner surface side of a spine, and a connecting member mounted on the main body member to support a mount. , Are formed integrally with plastic, and side plates are flexibly connected to both longitudinal sides of the substrate fixed to the inner surface of the spine, and end plates are connected to the upper and lower ends of the substrate so as to be bent. In a state where both side plates and both end plates are unfolded, the substrate, both side plates and both end plates are formed to have a flat plate shape, and both side plates are erected at a substantially right angle in a facing state. A guide groove extending in the vertical direction and opening inward is formed on the inner surface side of the groove. The groove width of the guide groove is narrowed at its open end, and the upper ends of both guide grooves are both Open or both guide grooves are open at the bottom The upper ends of both side plates rising substantially at a right angle are detachably connected to each other by an upper end plate rising substantially at a right angle, and the lower ends of the both side plates rising at a substantially right angle. The connection member is integrally formed of plastic, can be inserted through a binding hole provided in the backing paper, and connects the left and right upright side plates. A slide piece is provided at both ends of the piece, and the slide piece is fitted into the guide groove so that the guide groove can be slid in the up-down direction, and a portion of the slide piece fitted into the guide groove, A plastic binding device for a binder, wherein the fitted portion is prevented from dropping out of the guide groove by engaging with the inner surface of the guide groove at the opening end side. 2. The upper end plate, in its upright state, detachably connects the upper ends of the upright left and right side plates, and the lower end plate in its upright state.
2. A plastic binding device for a binder according to claim 1, wherein the lower ends of the upright left and right side plates are detachably connected to each other. 3. The plastic binding device for a binder according to claim 1, wherein the cross-sectional shape of the guide groove is a 3/4 arc, and the open end of the guide groove is narrowed. 4. A stopper piece for supporting said slide piece, which slides said left and right guide grooves in a vertical direction, from below at a groove bottom near a lower end of said left and right guide grooves. The plastic binding device for a binder according to claim 1. 5. The plastic binding device for a binder according to claim 1, wherein the upper end plate is connected to an upper end of the substrate at a central portion in the left-right direction. 6. The plastic binding device for a binder according to claim 1, wherein the main body member and the connecting member are made of polypropylene. 7. The plastic binding device for a binder according to claim 1, wherein the connecting member has a U shape in a front view. 8. The plastic binding device for a binder according to claim 1, wherein the connecting member has an I shape in a front view.