Folder

Abstract

[The technical problem to be solved] Provide a folder with a structure that allows for both open and closed covers. Technical means to solve the problem The folder is configured to be able to change its orientation, with the cover (A) in an open (H) and closed position. The binding device (B) includes front and rear binding rings (R(f)) and (R(r)), configured to be able to be in an open (P) and closed position; and a base portion (d2) mounted on the inner surface of the side cover (3). The front cover (1) and the bottom cover (2) have first and second connecting holes (a1) and (a2) that allow the front and rear binding rings (R(f)) and (R(r)) to pass through, and can change their orientation between an open (H) and closed position.

Description

Folder The present invention relates to a file folder with a cover and a binding tool. Conventionally, various file folders including a cover and a binding tool are known (for example, see Patent Document 1). This file folder has a structure in which a base portion with a binding tool is mounted on the outer surface of a side cover. However, the folder of this structure has a base of a certain size, and the posture of opening the folder in a manner such that the front cover and the bottom cover are opened in substantially the same plane on the placement surface of the top plate etc. becomes difficult to stabilize. Furthermore, it is desirable that when the file folder is not in use, the inner surfaces of the front cover and the bottom cover can be appropriately closed so that they face each other without being affected by the presence of the binding. [Prior Art Document] [Patent Document] [Patent Document 1] Japanese Patent No. 6681742 [Problems to be solved by the invention] The present invention has been made with the above-mentioned issues in mind, and at least provides a file folder having a structure that allows the cover to be properly opened or closed. [Solution to Problem] That is, the present invention has the following structure. The invention described in claim 1 is a file folder comprising a cover and a binding device, wherein the cover comprises a front cover, a side cover, and a bottom cover connected via a hinge portion, the front cover and the bottom cover are configured to be able to change their postures so as to be able to adopt an open posture in which they are unfolded with approximately the same surface, and a closed posture in which the inner surfaces of the front cover and the bottom cover are able to face each other, and the binding device comprises: a binding ring configured to be able to adopt an open posture and a closed posture; and a base portion mounted on the inner surface of the side cover, the front cover and the bottom cover having a connecting hole for allowing the binding ring to pass through, and being able to change their posture between the open posture and the closed posture. The invention recorded in claim 2 is the file folder recorded in claim 1, which is provided with a mounting device for mounting the aforementioned base portion on the inner surface of the aforementioned side cover, and the aforementioned mounting device comprises: a mounting base arranged on the outer side of the aforementioned side cover, and a snap-fitting protrusion, which protrudes from the mounting base, passes through the aforementioned side cover, and snaps into engagement with the snap-fitting portion formed on the aforementioned base portion. The invention described in claim 3 is the file folder described in claim 2, wherein the aforementioned engaging protrusions protrude toward both ends of the longitudinal direction of the aforementioned mounting base, and the engaging protrusions are engaged with the aforementioned engaging portion in a locked state. The invention described in claim 4 is the file folder described in claim 1, wherein the horizontal width of the side cover is set to be approximately the same as or longer than the horizontal width of the base portion, and is set to be shorter than the horizontal width of the binding ring. The invention described in claim 5 is the file folder described in claim 1, wherein the cover is configured to be capable of changing its position by folding the outer surfaces of the front cover and the bottom cover so that they face each other. The invention recorded in claim 6 is the file folder recorded in claim 1, wherein the aforementioned binding tool comprises: a first binding tool component and a second binding tool component, the first binding tool component having the aforementioned base portion and a first ring constituting portion extending from the base portion to constitute the aforementioned binding ring, the second binding tool component being provided with a second ring constituting portion to constitute the aforementioned binding ring, and the aforementioned second binding tool component being rotatable relative to the aforementioned first binding tool component in such a manner as to be able to adopt the aforementioned closed posture in which the front end portions of the aforementioned first and second ring constituting portions are engaged with each other and the aforementioned open posture in which the front end portions of the aforementioned first and second ring constituting portions are separated. The invention described in claim 7 is the file folder described in claim 6, wherein the first binding member and the second binding member are each formed of a synthetic resin. [Effects of the Invention] As described above, according to the present invention, it is possible to provide at least a file folder having a structure that allows the cover to be appropriately positioned in an open position and a closed position. 1 to 16 , an embodiment of the present invention will be described. In this embodiment, the vertical direction, the horizontal direction, and the front-rear direction are defined for ease of description. In this embodiment, the present invention is applied to a binding tool B capable of binding objects J (hereinafter simply referred to as "bound objects J") such as sheets having binding holes j1, and a file folder having the binding tool B. The file folder comprises a cover A and two binding tools B attached to the inner surface of a side cover 3 of the cover A. The two binding tools B have the same structure. The two binding tools B are attached to the front end (front end) and the inner end (rear end) of the side cover 3 using a mounting tool G in a manner that allows them to be separated from each other. The following describes the folder structures in detail. <<Cover A>> The cover A includes a front cover 1, side covers 3, and a bottom cover 2 that are connected to each other so as to be relatively rotatable via a hinge portion N. The cover A is in the form of a sheet formed of synthetic resin. The cover A is constructed so as to be capable of changing its posture to: an open posture (H) in which the front cover 1, the side covers 3, and the bottom cover 2 can be unfolded in roughly the same plane on a loading surface such as a top plate; a closed posture (T) in which the inner surfaces of the front cover 1 and the bottom cover 2 can face each other; and a folded posture (K) in which the outer surfaces of the front cover 1 and the bottom cover 2 can face each other. <Front Cover 1> The front cover 1 is generally rectangular and includes a base front cover portion 12 adjacent to the side cover 3 via a hinge portion N, and a front cover body portion 11 connected to the base front cover portion 12 via an intermediate hinge portion cn. In this embodiment, the front cover 1 is composed of a front cover body 11, an intermediate hinge portion cn, and a base front cover portion 12. Specifically, the front cover 1 is provided with the intermediate hinge portion cn. Therefore, the front cover 1 in the closed position (T) can be flexibly adjusted in relation to the amount, number, and size of the objects J to be bound by the binder B, allowing the relative position of the front cover body 11 and the base front cover portion 12 to be changed. The base end front cover portion 12 is set to be substantially the same as or shorter than the horizontal width w1 of the side cover 3. In this embodiment, the base end front cover portion 12 is set to be shorter than the horizontal width w1 of the side cover 3. The front cover body portion 11 is the main portion constituting the front cover 1. The front cover 1 has a first communicating hole a1 that allows the front and rear binding rings R(f) and R(r) of the binding tool B to pass through, thereby enabling the binding tool B to change between an open position (H) and a closed position (T). The first communicating hole a1 forms the left portion of the front and rear binding rings R(f) and R(r), that is, the front and rear second ring components e1(f) and e1(r) to pass through. Furthermore, the first communicating hole a1 corresponds to the movable region of the front and rear second ring-forming portions e1(f) and e1(r) that are movable about the shaft portion e2, and is provided not only in the front cover body portion 11 and the base front cover portion 12 that constitute the front cover 1, but also across the side cover 3. A left-right dimension w4 of the first communicating hole a1 is set to be longer than a left-right dimension w5 of the second communicating hole a2, described later. <Bottom Cover 2> The bottom cover 2 is generally rectangular and includes a base bottom cover portion 22 adjacent to the side cover 3 via a hinge portion N, and a front cover body 21 connected to the base bottom cover portion 22 via an intermediate hinge portion cn. In this embodiment, the bottom cover 2 is composed of a bottom cover body 21, an intermediate hinge portion cn, and a base bottom cover portion 22. Specifically, the bottom cover 2 is provided with an intermediate hinge portion cn. Therefore, when the bottom cover 2 is in the closed position (T), the relative position of the bottom cover body 21 and the base bottom cover portion 22 can be flexibly changed depending on the amount, number, and size of the objects J to be bound by the binder B. The base end bottom cover portion 22 is set to have a width that is substantially the same as or shorter than the width w1 of the side cover 3. In this embodiment, the base end bottom cover portion 22 is set to have a width that is shorter than the width w1 of the side cover 3. The bottom cover body portion 21 is the main portion of the bottom cover 2. The bottom cover 2 has a second communicating hole a2 that allows the front and rear binding rings R(f) and R(r) of the binding tool B to pass through, thereby enabling the binding tool B to change between the open position (H) and the closed position (T). The second communicating hole a2 allows the right portions of the front and rear binding rings R(f) and R(r), that is, the front and rear first ring components d1(f) and d1(r), to pass through. The second communication hole a2 is formed across the bottom cover body 21 and the base bottom cover 22 of the bottom cover 2. The left-right dimension w5 of the second communication hole a2 is set shorter than the left-right dimension w4 of the first communication hole a1. <Side Cover 3> The side cover 3 is provided between the front cover 1 and the bottom cover 2. The horizontal width w1 of the side cover 3 is set to be longer than the horizontal width w2 of the base portion d2 constituting the binding device B, and is set to be shorter than the horizontal width w3 of the front and rear binding rings R(f) and R(r) forming the closed position (C). The binding tools B are separately attached to the front end (the end directly in front) and the rear end (the end in the back) of the side cover 3. That is, the file folder has two binding tools B separated in the front-to-back direction relative to the side cover 3. The side cover 3 is provided with through-holes 31 through which the engaging protrusions g2 of the attachment tools G for attaching the binding tools B pass. <Hinge N, Intermediate Hinge CN> The hinge N and the intermediate hinge CN are referred to as resin hinges. Specifically, the hinge N and the intermediate hinge CN are formed to be thinner than the front cover body 11, the base front cover 12, the side cover 3, the bottom cover body 21, and the base bottom cover 22, thereby making them easily deformable. In addition, the front cover 1 and the bottom cover 2 may also be structures without the middle hinge portion cn. <<Binding tool B>> Binding tool B comprises: front and rear binding rings (R(f)), (R(r)), which are configured to be able to adopt an open posture (P) and a closed posture (C); and a single base portion d2 mounted on the inner surface of the side cover 3, which is arranged on the base end side of the front and rear binding rings R(f), R(r). The binding tool B has: a first binding tool component D, which is provided with front and rear first ring constituting parts d1(f), d1(r) constituting the front and rear binding rings R(f), R(r); and a second binding tool component E, which is provided with front and rear second ring constituting parts e1(f), e1(r) constituting the front and rear binding rings R(f), R(r). The binding tool B is configured to be capable of adopting a closed posture (C) in which the front end portions of the first and second ring components d1(f), d1(r), e1(f), and e1(r) at the front and rear ends are engaged with each other, and an open posture (P) in which the front end portions of the first and second ring components d1(f), d1(r), e1(f), and e1(r) at the front and rear ends are separated. More specifically, the binder B constitutes a second binder component E that can rotate relative to the first binder component D, thereby being able to adopt a closed posture (C) in which the front and rear binding rings R(f) and R(r) form a closed loop and an open posture (P) in which the front and rear binding rings R(f) and R(r) do not form a closed loop. <First Binding Member D> The first binding member D is integrally formed of synthetic resin and is attached to the inner surface of the side cover 3 using an attachment G. The first binding member D comprises a base portion d2 having a shaft portion e2 to which the second binding member E is attached, and a shaft portion receiving space sp open at least downwardly; and front and rear first ring-forming portions d1(f) and d1(r) extending integrally from the base portion d2 and forming the front and rear binding rings R(f) and R(r). The shaft portion receiving space sp of the base portion d2 is located in the longitudinal center (front-back center) of the base portion d2. [Base portion d2] The base portion d2 includes: front and rear engaging holes 4f and 4r provided at both ends in the longitudinal direction and serving as engaging portions capable of engaging with the engaging protrusion g2 of the mounting device G; a pair of front and rear shaft support portions 5f and 5r capable of rotatably supporting both ends of the shaft portion e2 provided in the second binding device component E; a through hole M extending in the up and down directions between the front shaft support portion 5f and the rear shaft support portion 5r; and front and rear notch portions Y provided between the front and rear engaging holes 4f and 4r and the through hole M for avoiding interference with the base ends of the front and rear second ring constituting portions e1(f) and e1(r) in the second binding device component E. The front and rear engaging holes 4f and 4r are provided in the base portion d2, further outward (front and rear) than the location where the shaft portion receiving space sp is formed. The front and rear engaging holes 4f and 4r cooperate with the mounting fixture G to mount the base portion d2 relative to the side cover 3 with the bottom surface of the base portion d2 connected to the inner surface of the side cover 3. Furthermore, the shapes of the base portion d2 near the front and rear engagement holes 4f and 4r, that is, the front and rear end shapes of the base portion d2, are formed to be visually different from each other in order to prevent misidentification of posture during installation. The front and rear shaft supports 5f and 5r rotatably support the ends of the substantially cylindrical shaft e2. Each of the front and rear shaft supports 5f and 5r comprises left and right shaft support walls 51 and 52 spaced apart from each other across a shaft accommodation space sp; an upper shaft support wall 53 connecting the upper ends of the left and right shaft support walls 51 and 52 with their lower surfaces facing the shaft accommodation space sp; and a fall-prevention projection v projecting from the inner surface of the right shaft support wall 52 toward the left shaft support wall 51. When the shaft e2 of the second binding tool member E is accommodated in the shaft accommodation space sp from the lower side of the base portion d2, it is prevented from falling off by the anti-falling protrusions v constituting the front and rear shaft support portions 5f and 5r, and becomes difficult to escape from the shaft accommodation space sp. and a front and rear connecting portion 8 connecting the front and rear ends of the left intermediate wall portion 6 and the right intermediate wall portion 7. A pressed engaging surface 61, 71 is defined in the middle portion of the left and right intermediate wall portions 6, 7 in the front-to-back direction. The pressed engaging surface is pressed by the convex portion t of the shaft portion e2 during the rotation of the second binding member E between the closed position (C) and the open position (P). The left intermediate wall portion 6 is supported in a cantilever manner with respect to the right intermediate wall portion 71 via the front and rear connection portions 7 . [Front and rear first ring components d1(f) and d1(r)] The front and rear first ring components d1(f) and d1(r) are partially annular and extend from the base component d2. Engaging claws x1 project from the front ends of the front and rear first ring components d1(f) and d1(r) in mutually opposing directions. Specifically, the front end of the front first ring component d1(f) projects the engaging claw x1 inward (rearward), while the front end of the rear first ring component d1(r) projects the engaging claw x1 inward (frontward). <Second Binding Component E> The second binding component E is integrally formed of synthetic resin and is supported rotatably relative to the first binding component D. The second binding tool component E has: an axis portion e2, which is rotatably supported relative to the base portion d2; and front and rear second ring forming portions e1(f), e1(r), which extend integrally from the axis portion e2 to form front and rear binding rings R(f), R(r). [Shaft e2] The shaft e2 is a rod-shaped portion extending in the front-rear direction. At least both longitudinal ends of the shaft e2 are cylindrical and rotatably engageable with the front and rear shaft supports 5f and 5r. A protrusion t is integrally formed in the middle portion of the longitudinal direction of the shaft portion e2, protruding in a direction perpendicular to the axis s. The protrusion t is configured to temporarily expand the width of the pair of wall portions forming the through hole M, that is, the left and right intermediate wall portions 6 and 7, when the second binder member E is changed from the closed position (C) to the open position (P). That is, the second binding tool component E is constructed in a posture between the closed posture (C) and the open posture (P), that is, the separation width w8 of the left and right middle wall bodies 6 and 7 when it is in the intermediate posture (U) is longer than the separation width w7 of the left and right middle wall bodies 6 and 7 when the second binding tool component E is in the closed posture (C) and the open posture (P). The protrusions t are provided in pairs so as to protrude in opposite directions relative to the shaft e2. The protrusions t are provided on an imaginary straight line q perpendicular to the axis s of the shaft e2 so that their protruding ends t1 substantially coincide with each other. The pair of protrusions t are formed so as to protrude in an oblique direction from the shaft portion e2 when the second binder member E is in the closed position (C) and the open position (P). The pair of protrusions t are formed so as to protrude substantially horizontally from the shaft e2 when the second binder member E is in the intermediate posture (U). In this embodiment, the portion where the shaft portion e2 and the protrusion t are provided is formed into a substantially lemon shape when viewed in cross section. [Front and Rear Second Ring Components e1(f) and e1(r)] The front and rear second ring components e1(f) and e1(r) are partially annular, extending from the shaft portion e2. Engaging claws x2 project from the front ends of the front and rear second ring components e1(f) and e1(r) in opposite directions. Specifically, the front end of the front second ring component e1(f) has the engaging claws x2 projecting outward (forward), while the front end of the rear second ring component e1(r) has the engaging claws x2 projecting outward (rear). The user uses his fingers to temporarily elastically deform the front and rear second ring components e1(f) and e1(r) in a direction toward each other, thereby disengaging the front end portions of the front and rear second ring components e1(f) and e1(r) from the front end portions of the front and rear first ring components d1(f) and d1(r). Then, by rotating the second binding member E relative to the first binding member D, the front and rear binding rings R(f) and R(r) that are in a closed position (C) can be changed in position toward an open position (P). <<Mounting Tool G>> The mounting tool G is used to mount the base portion d2 on the inner surface of the side cover 3. The mounting tool G is formed of a synthetic resin. The mounting device G comprises: a mounting base g1 arranged on the outer side of the side cover 3, a locking protrusion g2 protruding from the mounting base g1, passing through a through hole 31 provided on the side cover 3 and engaging with front and rear locking holes 4f and 4r formed on the base portion d2 as a locking portion. The mounting base g1 is connected to the outer surface of the side cover 3. The mounting base g1 is formed into a rectangular plate extending along the longitudinal direction of the side cover 3. The horizontal width w6 of the mounting base g1 is set to be shorter than the horizontal width w1 of the side cover 3. Notches g11 are provided at left and right side ends of the mounting base g1 to prevent interference with the front and rear second ring components e1 ( f ) and e1 ( r ) serving as the movable ring. Furthermore, since the attachment G is formed in a bilaterally symmetrical shape, it can be properly engaged with the base portion d2 of the binding tool B even if it is turned left-right. The engaging projection g2 is formed at both ends of the mounting base g1 in the longitudinal direction. The engaging projection g2 is composed of two separate claw portions g21. The front portions of the two claw portions g21 constituting the engaging projection g2 have anti-return projections tk formed thereon. The two engaging protrusions g2 provided on the attachment base g1 are engaged with the engaging holes 4f and 4r formed in the front and rear of the base portion d2 of the binding tool B in a locked state. Next, the operation of the binding tool B when the front and rear binding rings R(f) and R(r) in the closed position (C) pass through the intermediate position (U) and change their positions to the open position (P) will be described. First, when the front and rear binding rings R(f) and R(r) are in the closed position (C), the engaging claws x1 of the front end portions of the front and rear first ring components d1(f) and d1(r) and the engaging claws x2 of the front end portions of the front and rear second ring components e1(f) and e1(r) engage with each other. From this state, the user uses his fingers to disengage the engaging claws x1 and x2 in the engaged state, temporarily elastically deforming the front and rear second ring components e1(f) and e1(r) toward each other, and rotates the second binding member E having the front and rear second ring components e1(f) and e1(r) relative to the first binding member D in the direction in which the engaging parts x1 and x2 move away from each other in the left and right directions. At this time, a pair of protrusions t provided on the shaft portion e2 can temporarily expand the separation width of the left and right intermediate wall portions 6 and 7 forming the through hole M during the process of the second binding member E changing from the closed position (C) to the intermediate position (U). That is, the left middle wall body 6, which is cantilevered relative to the right middle wall body 7 via the front and rear connecting parts 8, is pressed by the convex part t when the posture is changed from the closed posture (C) to the middle posture (U), and can be temporarily elastically displaced in a direction away from the right middle wall body 5. That is, the shaft portion e2 having the pair of protrusions t presses and pushes the left and right intermediate wall portions 6 and 7 outwards while the second binder member E changes from the closed position (C) to the intermediate position (U). The pair of protrusions t, which project diagonally in the closed position (C), are formed to project approximately horizontally in the intermediate position (U). The shafts e2 of the pair of protrusions t in the intermediate position (U) are longer in the transverse direction than in the closed position (C). Therefore, the shafts e2 of the pair of protrusions t resist the elastic restoring force of the member that attempts to return the left intermediate wall portion 6 to its original position, pressing the left intermediate wall portion 6 outward and temporarily widening the distance between the left and right intermediate wall portions 6 and 7. From this state, when the shaft portion e2 having the pair of protrusions t further rotates, that is, when it rotates from the intermediate position (U) to the open position (P), the elastic restoring force of the left intermediate wall portion 6, which attempts to return to its original position, presses the portion of the protrusion t on one side other than the top. The second binder member E, which is subjected to the elastic force, is pushed toward the open position (P) and rotates to the final open position (P). Through the above process, the second binder member E can adopt the open position (P) from the closed position (C) through the intermediate position (U), and can be stabilized in a state that is difficult to return to the final open position (P). Furthermore, the second binder member E can be rotated from the open position (P) to the closed position (C) via the intermediate position (U) by performing the above-mentioned procedure in reverse order using the operating force of the user. As described above, the file folder of this embodiment includes the cover A and the binding tool B. Moreover, the cover A has a front cover 1, a side cover 3, and a bottom cover 2 connected via a hinge portion N, and is constructed so as to be able to change its posture between an unfolded open posture (H) in which the front cover 1 and the bottom cover 2 are in roughly the same plane, and a closed posture (T) in which the inner surfaces of the front cover 1 and the bottom cover 2 are able to face each other. The binding device B comprises: front and rear binding rings R(f), R(r) that are capable of adopting an open posture (P) and a closed posture (C), and a base d2 installed on the inner surface of the side cover 3, the front cover 1 and the bottom cover 2 have a first connecting hole a1 and a second connecting hole a2 as connecting holes that allow the front and rear binding rings R(f), R(r) to pass through, and can change the posture between the open posture (H) and the closed posture (T). Therefore, the file folder of this embodiment can provide a structure in which a binding tool B is provided on the inner surface of the side cover 3, and the file folder can adopt not only the open posture (H) of the cover A but also the closed posture (T) as appropriate. That is, since the base portion d2 of the binding tool B is attached to the inner surface of the side cover 3, the cover A can be appropriately placed in the double-leaf position (H) on a placement surface such as a top plate. Alternatively, the cover A can be positioned in a closed position (T) as appropriate. Specifically, the front cover 1 and the bottom cover 2 are provided with a first communication hole a1 and a second communication hole a2. The presence of the first communication hole a1 and the second communication hole a2 prevents the front cover 1 and the bottom cover 2 from interfering with the front and rear binding rings R(f) and R(r) in the binding tool B. In other words, the presence of the first and second communicating holes a1 and a2 prevents the neatly closed position (T) of the front cover 1 and the bottom cover 2 from being damaged. The cover A in the closed position (T) can be appropriately thin overall in appearance by cooperating with the front and bottom covers 1 and 2. A mounting tool G is provided for mounting the base portion d2 on the inner surface of the side cover 3. The mounting tool G includes a mounting base g1 disposed on the outer side of the side cover 3, and an engaging protrusion g2 protruding from the mounting base g1 and penetrating the side cover 3 and engaging with front and rear engaging holes 4f and 4r as engaging portions formed on the base portion d2. Therefore, the binding tool B can be appropriately attached to the inner surface of the side cover 3 using the attachment tool G. The engaging projections g2 are provided protrudingly at both ends of the mounting base g1 in the longitudinal direction and can be fitted into the front and rear engaging holes 4f and 4r. Therefore, the binding tool B attached to the side cover 3 by the attachment tool G is unlikely to come off. The width w1 of the side cover 3 is set to be substantially the same as or longer than the width w2 of the base portion d2 and is set to be shorter than the lateral dimensions w3 of the front and rear binding rings R(f) and R(r). Therefore, the width w2 of the base portion d2 of the binding tool B is set to a value suitable for attachment to the side cover 3, and the front and rear binding rings R(f) and R(r) of the binding tool B can bind the objects J appropriately. The cover A is configured to be able to change its position so as to be in a folded position (K) in which the outer surfaces of the front cover 1 and the bottom cover 2 face each other. Therefore, the file folder can be in a form that is convenient for the user by placing the cover A in the folded position (K). The binding tool B comprises: a first front and rear binding tool component D, which has a first front and rear ring forming portion d1(f), d1(r) constituting a base portion d2 and front and rear binding rings R(f), R(r) extending from the base portion d2 as binding rings; and a second binding tool component E, which has a second front and rear ring forming portion e1(f), e1(r) constituting the front and rear binding rings R(f), R(r). Furthermore, the second binding member E is configured to be rotatable relative to the first binding member D in a closed position (C) in which the front end portions of the first and second ring components d1(f), d1(r), e1(f), and e1(r) are engaged with each other, and in an open position (P) in which the front end portions of the first and second ring components d1(f), d1(r), e1(f), and e1(r) are separated. Therefore, the binding tool B has an appropriate structure capable of binding the objects J using the first and second binding tool members D and E. The first binder member D and the second binder member E are each formed of a synthetic resin. Therefore, the binder B is excellent in flexibility in elastic deformation, light weight, and freedom of design that allows for formation of complex shapes. In addition, the present invention is not limited to the embodiments described above in detail. The base portion of the first binder member may also be provided with a recess that opens upward instead of a through hole that penetrates in the vertical direction. Even if it is such a structure, the projection of the second binder member can temporarily expand the separation width of the paired wall portions that form the recess, and can achieve the desired purpose. The first and second binding members are not limited to being able to rotate relative to each other. For example, the first and second binding members may be relatively displaced by sliding, for example, to achieve a closed position in which the front ends of the first and second ring components engage with each other, and an open position in which the front ends of the first and second ring components separate from each other. The convex portion is not limited to being provided on the shaft portion, and the convex portion only needs to be provided on the second binding tool member. The shapes of the communication holes provided in the front cover and the bottom cover can be various and are not limited to those shown in the above-mentioned embodiment. The base portion of the binding tool can be installed on the inner surface of the side cover in an appropriate manner. For example, the base portion can also be installed on the inner surface of the side cover using an adhesive rather than a mounting tool. The installation tool can be single or multiple. In other words, one installation tool can be used to install two binding tools on the side covers of the cover, or two or more installation tools can be used to install one binding tool on the side covers of the cover. The engaging protrusion does not need to be locked in engagement with the engaging portion. The engaging portion is not limited to the engaging hole, and may be in any shape as long as it is a structure capable of engaging with the engaging protrusion. The horizontal width of the side cover may also be set to be substantially the same as the horizontal width of the base. The cover may be configured so that the outer surfaces of the front cover and the bottom cover cannot be folded so as to face each other. Furthermore, the specific configuration of each component is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. A: Cover 1: Front cover 2: Bottom cover 3: Side cover B: Binding tool D: First binding tool component E: Second binding tool component G: Mounting tool [Figure 1] A perspective view of an embodiment of the present invention. [Figure 2] A top view of the embodiment. [Figure 3] A perspective view of the embodiment. [Figure 4] A perspective view of the embodiment. [Figure 5] A perspective view of the embodiment. [Figure 6] A perspective view of the embodiment. [Figure 7] An exploded perspective view of the embodiment. [Figure 8] A sectional view taken along line AA of Figure 2. [Figure 9] An exploded perspective view of the embodiment. [Figure 10] An exploded perspective view of the embodiment. [Figure 11] A sectional view taken along line BB of Figure 2. [Figure 12] A sectional view taken along line CC of Figure 4. [Figure 13] A sectional view taken along line DD of Figure 5. [Figure 14] A left side view of the embodiment. [Figure 15] A sectional view taken along line EE of Figure 14. [Figure 16] A sectional view taken along line EE of Figure 14 (a sectional view taken along the same cut as in Figure 15) showing a folded cover. 1: Front cover 2: Bottom cover 3: Side cover 4f: front snap-in hole 4r: rear locking hole 5f: front shaft support 5r: rear shaft support 6: Left middle wall 7: Right middle wall 8: Connection 11: Front cover body 12: Base end front cover 21: Front cover body 22: Base end bottom cover 71: snap-fit ​​surface A(H): Cover (the front cover's folio) a1: first connecting hole a2: second connecting hole B(P): Binding tool (opening posture of binding tool) cn: Middle hinge D: First binding tool component d1(f): first ring component d1(r): The first ring component at the back d2: base e1(f): Second ring component e1(r): Second ring component e2: around the shaft G: Mounting tool g1: Install the base g2: Engaging convex part M:Through hole N: Hinge R(f): front binding ring R(r): Rear binding ring sp: shaft accommodation space t1(t): protruding end (convex part)

Claims

1. A folder comprising a cover and a binding device, characterized in that: the cover has a front cover, a side cover, and a bottom cover connected by a hinge portion; the front cover and the bottom cover are configured to be posterior-changeable in that they can be opened in a bi-fold position with substantially the same surface, and in a closed position with their inner surfaces facing each other; the binding device comprises: a binding ring configured to be posterior-open and posterior-closed; and a base portion mounted on the inner surface of the side cover; the front cover and the bottom cover have a communicating hole allowing the binding ring to pass through, and are posterior-changeable between the bi-fold position and the closed position; the communicating hole of the front cover is also provided across the side cover.

2. As in request item 1, the folder contains, The mounting device is equipped with a mounting base for mounting the aforementioned base portion on the inner surface of the aforementioned side cover. The mounting device includes a mounting base disposed on the outer side of the aforementioned side cover and an engaging protrusion that protrudes from the mounting base, penetrates the aforementioned side cover, and engages with the engaging portion formed on the aforementioned base portion.

3. As in request item 2, the folder contains, The aforementioned engaging protrusions protrude at both ends of the aforementioned mounting base along the longitudinal direction, and these engaging protrusions engage with the aforementioned engaging portion in a locked state.

4. As in request item 1, the folder contains, The width of the aforementioned side cover is set to be approximately the same as or longer than the width of the aforementioned base portion, and is set to be shorter than the width of the aforementioned binding ring.

5. As in request item 1, the folder contains, The aforementioned cover configuration allows for changes in posture by folding the outer surfaces of the front and bottom covers together so that they face each other.

6. As in request item 1, the folder contains, The aforementioned binding device includes: a first binding device component and a second binding device component. The first binding device component has the aforementioned base portion and a first ring component extending from the base portion to form the aforementioned binding ring. The second binding device component has a second ring component forming the aforementioned binding ring. The second binding device component is configured to rotate relative to the aforementioned first binding device component by means of a closed posture in which the front ends of the aforementioned first and second ring components engage with each other and an open posture in which the front ends of the aforementioned first and second ring components separate.

7. As in request item 6, the folder, The aforementioned first binding component and the aforementioned second binding component are respectively formed of synthetic resin.

Images