JP2015174412A - Ring notebook, manufacturing method of ring notebook - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ring notebook excellent in use feeling and a preferable manufacturing method of the ring notebook.SOLUTION: In a ring notebook, a plurality of sheets having binding holes are bound by a synthetic resin ring 4. The ring comprises: a plurality of ring bodies 5 inserted to the binding holes respectively; and a base which connects base ends of the ring bodies to each other and keeps each ring body in a closed ring shape while holding the tip side of each ring body. The ring body comprises an annular part 51 for binding the sheets and a tip connection part adhered to the base. The annular part comprises chamfered shape portions 57 at both side edges of the outer surface side.

Description

  The present invention relates to a ring notebook in which a plurality of sheets are bound by a ring.

  Conventionally, various ring notes are known in which a plurality of sheets having a plurality of binding holes are bound by a ring. When such a ring notebook is opened and used, the ring is exposed between adjacent pages. Therefore, when using a ring notebook, for example, during writing, the user's hand often touches the exposed ring.

  However, conventional rings are generally made by deforming a metal wire by bending or the like, and there is a sense of incongruity when a hand touches such a ring. In order to solve this problem, a ring notebook having a ring made of a soft material such as a synthetic resin that is temporarily elastically deformed when touched by a user's hand has been developed (for example, the following) (See Patent Document 1).

  This ring notebook is formed by punching a synthetic resin sheet material having a constant thickness, and a plurality of horizontal strips inserted through the binding holes, and a vertical strip formed integrally with these horizontal strips. The ring-forming member provided is formed, and the horizontal belt-shaped portion is passed through the binding holes and then wound up to the vertical belt-shaped portion side, and the penetrating end of each horizontal belt-shaped portion is joined to the vertical belt-shaped portion by welding. It has been. When this is the case, each ring portion of the ring that is touched when the ring notebook is used in an open state (the portion formed by the horizontal belt-like portion) has a flat shape that can be punched out of the sheet material. Therefore, when the user's hand touches the side edges of these annular portions, there was a sense of incongruity.

Japanese Patent No. 5374721

  An object of the present invention is to provide a ring notebook capable of solving the above-described problems and improving the usability, and a preferred method for manufacturing the ring notebook.

  The present invention employs the following configuration in order to solve the above-described problems. That is, the ring notebook according to the present invention is formed by binding a plurality of sheets having binding holes with a synthetic resin ring, and the rings are respectively inserted into the binding holes. And a base for mutually connecting the base ends of the ring main bodies and holding the distal end sides of the ring main bodies to maintain the ring main bodies in a closed ring shape, and the ring main bodies bind sheets. An annular portion and a tip connecting portion welded to the base are provided, and the annular portion is provided with chamfered portions on both side edges on the outer surface side.

  Here, the “paper” may be in the form of a sheet that can be bound as a ring notebook, and includes paper and plastic. In addition, the paper can be used for writing or pasting.

  In addition, the “annular” is not necessarily a smooth circular shape, but is a concept that includes a part that is partly raised.

  As the “welding”, in addition to thermal welding using nichrome wire or the like, ultrasonic welding or high-frequency welding may be considered.

  As a preferred embodiment of the annular portion, there is one that has a shape that gradually becomes thinner from the center toward both side edges in the cross section.

  The ring is made of a ring forming member including a ring body corresponding part for forming the ring body and a base corresponding part for forming the base, and the ring body corresponding part The annular portion corresponding region and the distal end connecting portion corresponding region continuously provided on the distal end side of the annular portion corresponding region, and forcibly bending and deforming the annular portion corresponding region It is preferable that the annular portion is formed by the annular portion corresponding region by welding the connecting portion corresponding region to the base corresponding portion.

  As a method of manufacturing the ring notebook described above, a ring body corresponding portion having an annular portion corresponding region corresponding to the annular portion and a tip connecting portion corresponding region corresponding to the tip connecting portion, and a base corresponding to the base Are formed integrally by injection molding, and a plurality of ring body corresponding parts of the ring forming member are respectively inserted into a plurality of binding holes of the paper, and each of these ring body corresponding parts Of the ring main body corresponding portion is welded to the base corresponding portion, and the portion other than the main portion of the base corresponding portion and the ring main body corresponding portion welded to the base corresponding portion are welded. A portion other than the main portion of the tip connection portion corresponding region is separated, and the tip connection portion of the base and the ring body is formed by the main portion, and the phosphorus That so as to form an annular portion of the annular ring body for binding the sheets by the annular end corresponding region of the body corresponding portion is preferred.

  Since this invention is the structure as mentioned above, the ring notebook which can make a usability | use_condition favorable, and the preferable manufacturing method of this ring notebook can be provided.

1 is an overall view of a ring notebook showing an embodiment of the present invention. The expansion perspective view which expands and shows the principal part of the embodiment. The front view which expands and shows the principal part of the embodiment. The enlarged bottom view which expands and shows the bottom face side of the embodiment. The figure which shows the state which brought the ring shown by the XX cross section of FIG. 3, and all the sheets to one side. FIG. 4 is an enlarged end view taken along line YY in FIG. 3. Explanatory drawing which shows the ring formation member which forms the ring of the embodiment. The top view which expands and shows the ring formation member of the embodiment. ZZ sectional drawing of FIG. Explanatory drawing which shows the manufacturing method of the ring notebook of the embodiment. Explanatory drawing which shows the manufacturing method of the ring notebook of the embodiment. Explanatory drawing which shows the manufacturing method of the ring notebook of the embodiment. The figure corresponding to FIG. 6 of the ring concerning the modification of this invention. The figure corresponding to FIG. 6 of the ring concerning the other modification of this invention. The figure corresponding to FIG. 6 of the ring concerning the further another modification of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 5, the ring notebook N according to the present embodiment binds the cover sheets 1 and 2 and the middle sheet 3, which are a plurality of sheets having the binding holes 11, 21, and 31, with the ring 4. It will be. Specifically, the ring notebook N includes a front cover 1 and a back cover 2 made of a synthetic resin sheet or cardboard, and a plurality of writing notes arranged between the front cover 1 and the back cover 2. The front cover 1, the back cover 2, and the inner cover 3 are formed by using a plurality of binding holes 11, 21, and 31 formed at the binding source of the inner cover 3 and the front cover 1, the back cover 2, and the intermediate cover 3. It is comprised from the ring 4 which binds. The binding holes 11, 21, and 31 are normal rectangular shapes, and a plurality of binding holes 11, 21, and 31 are provided at a predetermined pitch on the binding source side of the front cover 1, back cover 2, and middle paper 3.

  1 to 6, the ring 4 is made of a soft resin, for example, a synthetic resin such as polypropylene, and a plurality of ring main bodies 5 inserted through the binding holes 11, 21, and 31, respectively. The base ends of the ring bodies 5 are connected to each other, and the bases 6 are provided to hold the front ends of the ring bodies 5 and maintain the ring bodies 5 in a closed ring shape.

  As shown in FIGS. 1 to 6, each ring main body 5 is positioned on one side edge 6 a side of the base 6, and an annular portion 51 that binds the front cover 1, back cover 2, and inner cover 3, and the base 6. And a tip connecting portion 52 welded to the head. The ring main body 5 is soft when it can be elastically deformed temporarily when the user touches the annular portion 51, but when the external force is released, the ring body 5 can self-return to the original curved shape. Made of material. That is, the ring body 5 has a fixed form that maintains a predetermined ring shape unless an external force is applied depending on the balance of the material, shape, and thickness, and after being temporarily crushed in the thickness direction during elastic deformation, It has a resilience that returns to its original shape.

  As shown in FIGS. 1 to 6, each of the annular portions 51 includes chamfered portions 57 at both side edges 56 on the outer surface 55 side, and as shown in FIG. The shape gradually becomes thinner toward the edge 56. Further, the annular portion 51 is formed continuously from a flat band-like portion 53 that rises from one side edge 61a of the joint portion 61 of the base 6 to be described later, and the distal end connecting portion 52 that is continuously formed and curved at the tip of the flat belt-like portion 53. And a curved belt-like portion 54 that extends to. The flat belt-like portion 53 is for aligning the binding edges 12, 22, and 32 of the front cover 1, back cover 2, and inner cover 3 and the corresponding anti-binding edges. A length dimension corresponding to the total thickness dimension of the front cover 1, the back cover 2, and the middle cover 3 is provided. The curved belt-like portion 54 is for guiding the front cover 1 and the inner paper 3 to be opened and closed, and is partially arc-shaped.

  As shown in FIGS. 2 to 5, each tip connection portion 52 is provided continuously to the tip of the annular portion 51 of the ring body 5 and is welded to the joint portion 61 of the base 6. . A positioning projection 58 is provided on the welding surface of the tip connection portion 52 to the base 6, and the positioning projection 58 is engaged with a positioning recess 63 provided on the base 6 to be described later. The positioning protrusions 58 are, for example, cylindrical.

  As shown in FIGS. 1 to 5, the base 6 includes joint portions 61 to which the tip connection portions 52 are welded and non-joint portions 62 other than the joint portions 61 alternately in the longitudinal direction. Yes, it is flat. As shown in FIG. 5, the base 6 of this embodiment is configured such that one side edge 62 a of the non-joining portion 62 is displaced in a direction away from the annular portion 51 with respect to the one side edge 61 a of the joining portion 61, A part of the joining part 61 and the front end connecting part 52 is configured to be able to enter the binding holes 21, 11, 31 of the back cover 2, the front cover 1, and a part of the middle sheet 3, which are sheets. More specifically, the base 6 is positioned between the inner cover 3 and the back cover 2, and the intermediate cover 3 and the base 6 can be in contact with each other, and the back cover 2 and the front end can be in contact with each other. The connecting portion 52 is arranged so as to be in contact with each other, and at least a part of the joint portion 61 and the tip connecting portion 52 can enter the binding hole 21 of the back cover 2. In addition, the width dimension of the joint part 61 of the base 6 and the tip connection part 52 of the ring body 5 is set to be substantially the same as the width dimension of the annular part 51. Further, the base 6 of the present embodiment is provided with a positioning recess 63 for positioning the tip connection portion 52 of the ring body 5 and the base 6 by engaging with the positioning projection 58 when being welded. It has been. The positioning recess 63 has a shape with which the positioning protrusion 58 can engage, for example, a circular hole.

  As shown in FIGS. 7 to 9, the ring 4 includes a ring main body corresponding portion 8 for forming the ring main body 5 and a base corresponding portion 9 for forming the base 6. 7 was made. The ring main body corresponding portion 8 and the base corresponding portion 9 are integrally molded by a synthetic resin that is a soft material.

  As shown in FIGS. 7 to 9, the ring main body corresponding portion 8 is provided continuously with an annular portion corresponding region 81 for forming the annular portion 51, and the distal end side of the annular portion corresponding region 81. A tip connection portion corresponding region 82 for forming the tip connection portion 52 is provided.

  As shown in FIGS. 7 to 9, each annular portion corresponding region 81 has a three-dimensional shape that is preliminarily curved. Specifically, a flat band-like portion corresponding portion 83 for forming the flat band-like portion 53 and first and second curved band-like portion corresponding portions 84 and 85 for forming the curved belt-like portion 54 are provided. ing. The flat belt-like portion corresponding portion 83 has a flat belt shape extending in a bent state from one side edge of the base corresponding portion 9. The first curved belt-like portion corresponding portion 84 is a curved belt-like shape extending in a bent state from the tip of the flat belt-like portion corresponding portion 83, and has a partial arc shape in a longitudinal sectional view. The second curved belt-like portion corresponding portion 85 is a curved belt-like shape continuously extending from the tip of the first curved belt-like portion corresponding portion 84, and has a partial arc shape in a longitudinal sectional view. The curvature of the first curved belt-like portion corresponding portion 84 and the curvature of the second curved belt-like portion corresponding portion 85 are different from each other. The first and second curved belt-like portion corresponding portions 84 and 85 are designed so that the curved belt-like portion 54 of the completed annular portion 51 has a substantially arc shape, and each curvature is in accordance with its purpose. Is set to a value. That is, the annular portion 51 is formed by the annular portion corresponding region 81 by forcibly deforming the annular portion corresponding region 81 and welding the tip connection portion corresponding region 82 to the base corresponding portion 9. The curvatures of the first and second curved belt-like portion corresponding portions 84 and 85 are set so that the annular portion 51 forms a partial arc shape in a longitudinal sectional view.

  As shown in FIGS. 7 to 9, each tip connection portion corresponding region 82 is a flat strip extending in a bent state from the tip of the second curved strip portion corresponding portion 85, A welding surface 86 to be welded to the base corresponding portion 9 is provided. The welding surface 86 includes the positioning projection 58 and a welding promoting element 87 that melts preferentially when welding and promotes welding between the welding surface 86 and a welding surface 93 described later. The welding promoting element 87 is disposed in the vicinity of the positioning projection 58 on the welding surface 86 and is formed integrally with the welding surface 86. Specifically, a plurality of welding promotion elements 87 having a hemispherical shape are arranged on the welding surface 86 in a predetermined pattern. The tip connection portion corresponding region 82 includes a main portion 88 corresponding to the tip connection portion 52 of the ring body 5 and a portion 89 other than the main portion that is cut off before the ring 4 is completed. The welding promoting element 87 is formed in the main portion 88. In FIGS. 7 to 11, portions 89 other than the main part are shown with patterns.

  As shown in FIGS. 7 to 9, the base-corresponding portion 9 has a flat band shape, and a joining portion corresponding region 91 corresponding to the joining portion 61 and a non-joining portion corresponding region corresponding to the non-joining portion 62. 92 are alternately provided. A welding surface 93 that is welded to the tip connection portion corresponding region 82 is provided on one surface side of each joint portion corresponding region 91. The welding surface 93 includes the positioning recess 63 and a welding accelerating element 94 that melts preferentially when welding and promotes welding between the welding surfaces 86 and 93. The welding promoting element 94 is disposed in the vicinity of the positioning recess 63 on the welding surface 93 and is formed integrally with the welding surface 93. Specifically, a plurality of welding promotion elements 94 having a hemispherical shape are arranged on the welding surface 93 in a predetermined pattern. The arrangement pattern of the welding promotion element 94 in the joint corresponding area 91 is different from the arrangement pattern of the welding promotion element 87 in the tip connection area corresponding area 82, and the welding promotion element 94 in the joint corresponding area 91 when being welded. And the welding promoting element 87 in the tip connection portion corresponding region 82 are set so as not to interfere with each other. Moreover, the base corresponding | compatible part 9 is equipped with the main part 95 equivalent to the said base 6, and the site | parts 96 other than the main part cut off before completion of the ring 4, and the positioning recess 63 and the welding promoting element 94 described above. Is formed in the main portion 95. In FIGS. 7 to 11, portions 96 other than the main part are shown with patterns.

  Next, a method for manufacturing the above-described ring notebook N will be described with reference to FIGS.

  First, a ring main body corresponding portion 8 provided with an annular portion corresponding region 81 corresponding to the annular portion 51 and a tip connecting portion corresponding region 82 corresponding to the tip connecting portion 52, and a base corresponding portion 9 corresponding to the base 6. The synthetic resin ring forming member 7 is integrally formed by injection molding. At this stage, the ring forming member 7 has a three-dimensional shape as shown in FIG.

  Next, the plurality of ring body corresponding portions 8 of the ring forming member 7 are respectively inserted into the plurality of binding holes 11, 21, and 31 of the front cover 1, the back cover 2, and the middle sheet 3 that are sheets. That is, in a state in which a certain number of middle sheets 3 and covers 1 and 2 are aligned, the ring body corresponding portions 8 of the ring forming member 7 are passed through the binding holes 11, 21, and 31, respectively, The tip connection portion corresponding region 82 is held by a jig (not shown).

  Then, as shown in FIG. 10, by moving the jig, the ring body corresponding portions 8 are curved and deformed, and the tip connection portion corresponding region 82 of the ring body corresponding portion 8 is changed to the base corresponding portion 9. To be attached. Thereafter, as shown in FIG. 11, the contact portion is welded. When each tip connection portion corresponding region 82 of the ring body corresponding portion 8 is brought into contact with the base corresponding portion 9, each positioning protrusion 58 of the tip connection portion corresponding region 82 and each of the base corresponding portions 9 The positioning recesses 63 are engaged with each other, so that the positional displacement between the tip connection portion corresponding region 82 and the base corresponding portion 9 is prevented. Further, when the welding portion is pressed and heated in the heated state, the welding promoting elements 87 and 94 are preferentially melted and spread on the welding surfaces 86 and 93, so that smooth and reliable welding is achieved. It becomes possible.

  After the welding is completed in this manner, the portion 96 other than the main portion of the base corresponding portion 9 and the main portion other than the main portion of the tip connection portion corresponding region 82 of the ring main body corresponding portion 8 welded to the base corresponding portion 9. The part 89 is cut off to obtain a ring notebook N as shown in FIG.

  As described above, the ring notebook N according to this embodiment includes a front cover 1, a back cover 2, and a middle cover 3 that are a plurality of sheets having binding holes 11, 21, and 31. 4, wherein the ring 4 connects a plurality of ring bodies 5 respectively inserted through the binding holes 11, 21, and 31, and the base ends of the ring bodies 5, and And a base 6 that holds each ring body 5 in a closed ring shape while holding the front end side of the ring body 5, and the ring body 5 binds the front cover 1, the back cover 2, and the middle sheet 3. 51 and a tip connection portion 52 welded to the base 6, and the annular portion 51 includes chamfered portions 57 on both side edges 56 on the outer surface 55 side.

  When this ring notebook N is used for the purpose of writing or the like, the ring 4 is exposed between the adjacent intermediate papers 3, but the ring 4 is provided with the chamfered portion 57 described above. Therefore, unlike the flat-shaped conventional product in which the annular portion of the ring is formed just by punching the sheet material, it is possible to suppress or eliminate the uncomfortable feeling when the user's hand touches the annular portion 51, The ring notebook N can be easily written. In addition, since the opening edges of the binding holes 11, 21, 31 are not easily caught by the side edges 56 of the annular portion 51, the turning operation of the cover sheets 1, 2 and the intermediate sheet 3 can be performed smoothly. That is, according to the ring notebook N of the present embodiment, it is possible to achieve both ease of writing and ease of turning. In particular, the annular portion 51 of the present embodiment has rounded corners on both side edges 56 on the outer surface 55 side, and rounded corners on both side edges 56 on the inner surface 59 side. As little as possible.

  In the present embodiment, since the annular portion 51 has a shape that gradually becomes thinner from the center toward the side edges 56 in the cross section, in addition to the ease of writing and turning of the chamfered shape portion 57 described above. Moreover, the rigidity as the ring 4 can be provided. That is, since the center of the annular portion 51 has a relatively thickness of, for example, about 0.6 mm, the external force is released after the user's hand touches the annular portion 51 and is temporarily elastically deformed. It can self-return to the curved shape forming the original annular shape, and the shape can be maintained. As described above, according to the annular portion 51 of the ring 4 of the present embodiment, a ring shape is usually formed depending on the balance between the material (material) forming the ring 4, the shape of the ring 4, and the thickness of the ring 4. When the user's hand or the like hits the ring 4 and is pressed, the ring shape is deformed in a direction to be crushed. It is possible to return to the shape. In particular, the conventional one has a relatively thin vertical width dimension of, for example, about 0.2 mm in the cross section of the annular portion, and thus it has been difficult to maintain a desired shape. If so, it can withstand repeated elastic deformation. That is, according to the ring 4 of the present embodiment, it is possible to improve the formability and the recoverability as compared with the conventional ring.

  The ring 4 is made of a ring forming member 7 having a ring main body corresponding portion 8 for forming the ring main body 5 and a base corresponding portion 9 for forming the base 6. The ring main body corresponding portion 8 includes an annular portion corresponding region 81 and a tip connection portion corresponding region 82 provided continuously on the tip side of the annular portion corresponding region 81, and the annular portion corresponding region The annular portion 51 is formed by the annular portion corresponding region 81 by forcibly deforming 81 and welding the tip connection portion corresponding region 82 to the base corresponding portion 9. And the said ring main body corresponding | compatible part 8 and the said base corresponding | compatible part 9 are integrally injection-molded by the synthetic resin, and the said cyclic | annular part corresponding | compatible area | region 81 has comprised the three-dimensional shape curved preliminarily. That is, since the three-dimensional shape is formed at the stage of the ring forming member 7, the annular portion 51 formed by the annular portion corresponding region 81 has a shape that can smoothly guide the front cover 1, the back cover 2, and the inner cover 3. Cheap.

  According to the present embodiment, the annular portion corresponding region 81 forming the annular portion 51 includes the first and second curved belt-like portion corresponding portions 84 and 85 having two different curved shapes. At the stage where the tip connection portion corresponding region 82 is welded to the base corresponding portion 9, the annular portion 51 can be set in a desired shape, and it is possible to make it difficult to apply unnecessary stress to each portion of the ring forming member 7. . Further, when the annular portion 51 is formed, it is only necessary to increase the degree of curvature of the ring body corresponding portion 8 that is preliminarily bent, so that the stress applied to the welded portion (the tip connection portion corresponding region 82 is the base corresponding portion 9). The repulsive force to be separated from the conventional flat resin sheet can be made smaller than that obtained by curving a conventional flat resin sheet.

  The annular portion 51 includes a flat belt-like portion 53 rising from the base 6 and a curved belt-like portion 54 formed continuously at the tip of the flat belt-like portion 53, at a location adjacent to the base 6. Since the flat belt-like portion 53 is formed, the binding holes 11, 21, and 31 of the front cover 1, the back cover 2, and the middle paper 3, which are sheets overlapped in the flat belt-like portion 53, are neatly aligned and overlapped. The shift of the front cover 1, the back cover 2 and the middle paper 3 in the horizontal direction can be suppressed. More specifically, the annular portion 51 of the ring body 5 has a flat belt-like portion 53 and a curved belt-like portion 54 as a whole and has a substantially D shape when viewed from the bottom. Here, since the total thickness dimension of the cover sheets 1 and 2 and the inner sheet 3 is set to be substantially the same as or slightly smaller than the length dimension of the flat belt-like portion 53, the binding of the cover sheets 1, 2 and the intermediate sheet 3 The binding holes 11, 21, and 31 are arranged in an orderly manner in a state in which the flat belt-like portion 53 of the ring body 5 is in the holes 11, 21, and 31.

  In addition, the manufacturing method of the ring notebook N of the present embodiment includes a ring body corresponding portion 8 including an annular portion corresponding region 81 corresponding to the annular portion 51 and a tip connecting portion corresponding region 82 corresponding to the tip connecting portion 52. A synthetic resin ring forming member 7 having a base corresponding portion 9 corresponding to the base 6 is integrally formed by injection molding, and a plurality of ring body corresponding portions 8 of the ring forming member 7 are formed on the front cover 1, The plurality of binding holes 11, 21, 31 of the back cover 2 and the inner cover 3 are inserted into the respective binding holes 11, 21, and 31, and the respective ring body corresponding parts 8 are bent and deformed so that the tip connection part corresponding area 82 of the ring body corresponding part 8 is the base The portion 96 other than the main portion of the base corresponding portion 9 that is welded to the corresponding portion 9 and the portion other than the main portion of the tip connection portion corresponding region 82 of the ring main body corresponding portion 8 that is welded to the base corresponding portion 9 89, the main portion 88, 95 forms the base 6 and the tip connection portion 52 of the ring body 5, and the ring cover corresponding region 81 of the ring body corresponding portion 8 covers the front cover 1, the back cover 2, and the middle. An annular portion 51 of an annular ring body 5 that binds the paper 3 is formed.

  Therefore, at the welding stage, the welding area between the tip connection portion corresponding region 82 of the ring main body corresponding portion 8 and the base corresponding portion 9 can be widened, and these can be reliably welded. Further, by separating portions 96 and 89 other than the main portion of the tip connection portion corresponding region 82 of the base corresponding portion 9 and the ring main body corresponding portion 8 at the end, the other side edge side of the base 6, that is, the end portion of the ring 4 is Can be orderly. During welding, it is conceivable that a part of the welding promoting elements 87 and 94 flows out to the side of the parts 89 and 96 other than the main part, but this is not a problem because it does not remain in the ring 4 as a product by the separation work. Must not.

  Further, the plurality of ring main bodies 5 are inserted corresponding to the plurality of binding holes 11, 21, and 31, respectively, and in the present embodiment, the longitudinal direction of the rectangular binding holes 11, 21, and 31. Is substantially equal to the width of the annular portion corresponding region 81 of the ring forming member 7, so that the annular portion 51 of the ring 4 corresponding to the annular portion corresponding region 81 is on the longitudinal direction side of the ring notebook N It is also possible to suppress shifting or deformation.

  Furthermore, since the base 6 has a flat plate shape, the thickness of the ring notebook N can be relatively suppressed. Since the base 6 is positioned between the back cover 2 and the inner cover 3 adjacent to the back cover 2, when the ring notebook N is closed, the base 6 can be seen from either the front cover 1 side or the back cover 2 side. Also, the base 6 is concealed. Also, when the ring notebook N is opened at a portion other than the back cover 2, the base 6 is not visible to the user. Therefore, when the ring notebook N is normally used, only the annular portion 51 of the ring 4 is exposed to the outside, so that an appearance similar to that of a conventional ring of metal wire can be obtained. .

  Further, when the ring main body 5 is joined to the base 6 by welding, the welding surface 86 of the tip connection portion corresponding region 82 of the ring main body corresponding portion 8 and the welding surface 93 of the base corresponding portion 9 are plastically deformed. And the base 6 can be brought into close contact with each other.

  The present invention is not limited to the embodiment described above.

  For example, the method for forming the chamfered portion is not limited to the above-described injection molding, and can be variously changed. For example, after punching the sheet material, the chamfered portion may be formed by cutting both side edges on the outer surface side of the annular portion.

  Further, the shape of the chamfered shape portion may be any shape as long as it improves the feeling of use of the ring notebook, for example, as shown in FIGS. Also good. In the following, in FIG. 13 to FIG. 15, portions corresponding to the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. That is, as shown in FIG. 13, the annular portion 51 is provided with a chamfered portion 57 having a curved shape only on both side edges 56 on the outer surface 55 side, or as shown in FIG. It is conceivable to have a chamfered portion 57 having an elliptical shape in cross section and having a curved shape on both side edges 56 on the outer surface 55 side and both side edges 56 on the inner surface 59 side. As described above, the chamfered portion 57 may be formed only on the both side edges 56 on the outer surface 55 side without being formed on the both side edges 56 on the inner surface 59 side of the annular portion 51. The shape of both side edges 56 on the outer surface 55 side and the shape of both side edges 56 on the inner surface 59 side of the annular portion 51 can be variously changed. In addition, as shown in FIG. 15, the annular portion 51 may include a chamfered portion 57 that forms a linear shape on both side edges 56 on the outer surface 55 side and on both side edges 56 on the inner surface 59 side. That is, the chamfered portion 57 can be variously changed in addition to the curved shape, as well as the linear shape.

  Further, the arc shape of the ring body may be any, and in the above-described embodiment, two kinds of curved belt-like portion corresponding portions having different curvatures are provided in the annular portion corresponding region of the ring body corresponding portion. However, various modifications can be made as long as the curved belt-like portion of the completed annular portion is designed to easily guide the paper. Of course, the curvature of the curved belt-like portion corresponding region may be the same as a whole (the curvature is set to one type), or various kinds of curved belt-like portion corresponding portions having different curvatures may be set. is there. Further, the shape of the curved belt-like portion is not limited to an arc.

  Further, in the above-described embodiment, at the manufacturing stage of the ring notebook, a part other than the main part of the base corresponding part and a part other than the main part of the tip connection part corresponding region of the ring main body corresponding part welded to the base corresponding part. However, this is not a limitation. For example, after welding the tip connection part corresponding region of the ring body corresponding part to the base corresponding part, the tip connection part corresponding region protruding from the other side edge of the base corresponding part is separated, or conversely, the tip connection part The base corresponding portion that protrudes from the tip edge of the corresponding region may be cut off. In addition, the tip edge of the tip connection portion corresponding region of the ring main body corresponding portion and the other side edge of the base corresponding portion may be aligned at the welding stage so that separation processing is not performed after welding. It is. That is, the ring forming member may not include the “part other than the main part” (the blank part) in the above-described embodiment. Further, the shape of the tip of the ring body and the shape of the tip of the ring body corresponding portion may be an arc shape or a triangle shape in addition to the illustrated square shape.

  Furthermore, the ring forming member is not limited to one having a length dimension substantially corresponding to the vertical dimension of the ring notebook, and may be shorter than this. In that case, a ring notebook may be formed using a plurality of ring forming members. That is, in the above-described embodiment, the paper is bound by a single ring forming member having a length dimension from the upper end to the lower end of the ring notebook, but the upper end to the lower end of the ring notebook is divided into a plurality of locations. The sheets may be bound by a plurality of ring forming members having dimensions shorter than those described above.

  In addition to the notebook size and normal notebook size, the ring notebook can be of various sizes. Further, the shape of the binding hole may be a circle, an ellipse, or other shapes besides a rectangle.

  The joining method of the base and the tip connection portion is not limited to welding, and may be bonding using an adhesive or the like. That is, “welding” in the above-described embodiment may be read as “adhesion”.

  The material of the ring body may be, for example, a fiber such as paper, a glass fiber, a metal such as aluminum, a shape memory alloy, a sheet-like nonwoven fabric in which fibers are entangled without being woven, or other appropriate materials in addition to the above-described synthetic resin May be natural materials.

  In addition, various changes may be made without departing from the spirit of the present invention.

N ... Ring notebook 11, 21, 31 ... Binding hole 4 ... Ring 5 ... Ring body 51 ... Annular part 52 ... Tip connection part 55 ... Outer surface 56 ... Side edge 57 ... Chamfered shaped part 6 ... Base 7 ... Ring forming member 8 ... Ring body corresponding part 81 ... Ring part corresponding area 82 ... Tip connection part corresponding area 88 ... Main part 89 ... Parts other than main part 9 ... Base corresponding part 95 ... Main part 96 ... Parts other than main part

Claims (4)

A ring notebook in which a plurality of sheets having binding holes are bound by a synthetic resin ring,
The ring connects a plurality of ring main bodies respectively inserted through the binding holes and the base ends of the ring main bodies, and maintains the front ends of the ring main bodies to maintain the ring main bodies in a closed ring shape. The ring body includes an annular portion for binding paper and a tip connection portion welded to the base, and the annular portion is chamfered on both side edges on the outer surface side. A ring notebook with a shaped part. The ring notebook according to claim 1, wherein the annular portion has a shape that gradually becomes thinner from a center toward both side edges in a cross section. The ring is made of a ring forming member including a ring body corresponding part for forming the ring body and a base corresponding part for forming the base, and the ring body corresponding part The annular portion corresponding region and the distal end connecting portion corresponding region continuously provided on the distal end side of the annular portion corresponding region, and forcibly bending and deforming the annular portion corresponding region The ring notebook according to claim 1 or 2, wherein the annular portion is formed by the annular portion corresponding region by welding the connecting portion corresponding region to the base corresponding portion. A method for producing a ring notebook according to claim 1, 2 or 3,
Synthetic resin ring formation comprising a ring main body corresponding portion having an annular portion corresponding region corresponding to the annular portion and a tip connecting portion corresponding region corresponding to the tip connecting portion, and a base corresponding portion corresponding to the base The members are integrally formed by injection molding,
A plurality of ring body corresponding portions of the ring forming member are respectively inserted into a plurality of binding holes of the paper,
Bending and deforming each ring body corresponding part to weld the tip connection part corresponding region of the ring body corresponding part to the base corresponding part,
Separate the part other than the main part of the tip connection part corresponding region of the ring main body corresponding part welded to the base corresponding part and the part other than the main part of the base corresponding part,
A ring notebook manufacturing method in which the base and the tip connecting portion of the ring body are formed by the main portion, and the annular portion of the annular ring body that binds paper is formed by the annular portion corresponding region of the ring body corresponding portion. .