JP2022108101A - ring file - Google Patents

Abstract

To provide a ring file which prevents a binding state of sheets, etc. from being released when a front cover is held in a closed posture, the ring file comprising a file body which is provided with a spine cover between proximal ends of paired covers and can take a cover open and closed state capable of rotating the other cover with respect to the spine cover orthogonal to one cover, and a ring binding tool having a binding ring at a proximal end vicinity part of the one cover of the file body.SOLUTION: A ring file RF provided with a binding ring 4F which comprises first and second ring forming members 6F and 7F engaged with distal end parts 62F and 72F, and configured to release the engagement when external force for disengagement to energize the ring forming members 6F and 7F in an approaching direction acts, wherein the other cover 12 has a locking hole 123 engaged with the binding ring 4F in the middle of a cover open and closed state without providing external force for disengagement.SELECTED DRAWING: Figure 16

Description

TECHNICAL FIELD The present invention relates to a ring file having a cover provided with a ring binding tool.

Conventionally, as this type of ring file, a back cover is provided between the base ends of the front cover and the back cover, and the cover can be opened and closed so that the front cover can be rotated with respect to the back cover perpendicular to the back cover. and a ring binder having a binding ring provided in the vicinity of the base end of the back cover of the file body (see, for example, Patent Document 1).

In such a ring file, a lock hole is provided in the front cover, and by engaging the lock hole with a binding ring of a ring binder, the front cover is in a closed position substantially parallel to the back cover. There are many things that can be kept in place.

JP 2018-34365 A

However, in the above-described conventional device, when the front cover is held in the closed position, the engaging portion of one of the first and second ring forming members forming the binding ring and the engaging portion of the other of the ring forming members are disengaged. It has been pointed out that a phenomenon in which the engagement is released and the bound state of the sheets or the like is released, though infrequently, occurs.

The inventors of the present invention conducted various investigations to investigate the cause of such a problem, and found that the problem caused the first and second ring-forming members forming the binding ring to be biased toward each other. It was discovered that this occurs in a fastener of the type in which engagement between the tips of both ring-forming members is released. In the prior art, when locked, the edge of the lock hole on the side opposite to the back cover abuts against the first ring forming member farther from the back cover. As a result, an external force acts on the first and second ring forming members in the direction of approaching each other, causing one engaging portion to engage with the other. We have come to recognize the phenomenon that the engagement between the tips of the two ring forming members is released by overcoming the meshing portion with the engaging portion of the ring forming member.

The present invention was made based on the results of such investigations, and the ring file according to the first aspect of the present invention has a spine cover between the base ends of a pair of covers, and is perpendicular to one of the covers. a file body capable of opening and closing the cover so that the other cover can be rotated with respect to the back cover; and a ring binder having a binding ring provided near the base end of one cover of the file body. wherein the binding ring comprises first and second ring-forming members whose distal ends are engaged with each other, and an external force for disengagement that biases both ring-forming members in a direction toward each other The other cover is engaged without applying an external force for releasing the engagement to the binding ring while the cover is being opened and closed. It has a lock hole that

The ring file according to the invention of claim 2 is the one described in claim 1, wherein the lock hole has a slit having a width dimension corresponding to the wire diameter of the binding ring, and a part of the slit and an elastically deforming portion for contracting the width, and is constructed so that a part of the binding ring can be inserted into the slit by utilizing the temporary elastic deformation of the elastically deforming portion. is.

The ring file according to the invention of claim 3 is the one according to claim 2, wherein the ring binding tool is attached to the base attached to the one cover and the part of the base opposite the back cover a first ring-forming member provided upright; and a second ring-forming member provided upright on the back cover side of the base and having an extension portion extending in the direction opposite to the back cover on the leading end side, , the second ring-forming member can be engaged and disengaged by relative rotation of the second ring-forming member, and the slit of the lock hole is positioned within the assumed rotation range of the other cover in the cover-opening/closing state. The directional edge is set to a dimension that does not substantially contact the first ring-forming member, and the elastically deforming portion of the lock hole contacts and engages the extending portion of the second ring-forming member. A ring file that fits.

In the present invention, "substantially no contact" is a concept including a state of no contact at all and a state of contact only to such an extent that an external force for disengagement cannot be applied to the binding ring.

A ring file according to the invention of claim 4 is the ring file according to claim 3, wherein the extending portion of the second ring forming member includes a base end curved portion and an anti-back cover portion from the base end curved portion. an intermediate straight portion extending in a direction and a tip curved portion that curves toward the base from the intermediate straight portion and abuts against the tip of the first ring forming member; A portion engages the intermediate linear portion.

In the present invention, the "intermediate linear portion" is not limited to a completely linear shape, and includes a gently curved shape (a shape with a smaller curvature than the base end curved portion and the distal end curved portion). It is a concept.

The ring file according to the invention of claim 5 is the one according to claim 3 or 4, wherein the assumed rotation range of the other cover is from the position where the other cover is separated from the binding ring , to a position where the rotation end of the other cover sheet abuts on the one cover sheet.

According to the present invention, the front cover is held in a closed position substantially parallel to the back cover by providing a lock hole in the front cover and engaging the lock hole with the binding ring of the ring binder. One engaging portion and the other engaging portion of the first and second ring-forming members that form the binding ring when the front cover is held in the closed posture in the ring file that can be held It is possible to prevent the occurrence of a problem that the binding state of sheets or the like is released due to disengagement from the binding.

The perspective view which shows the ring file which concerns on one Embodiment of this invention. The top view which shows the ring file which concerns on the same embodiment. Front view showing the ring file according to the same embodiment A arrow directional view in FIG. The top view which shows the ring binding tool which concerns on the same embodiment. The front view which shows the ring binding tool which concerns on the same embodiment. BB sectional view in FIG. CC sectional view in FIG. The X arrow directional view in FIG. Operation|movement explanatory drawing of the ring binding tool which concerns on the same embodiment. Sectional drawing for operation|movement description of the ring binding implement which concerns on the same embodiment. The figure which expands and shows the principal part in FIG. Operation|movement explanatory drawing of the ring binding tool which concerns on the same embodiment. Sectional drawing for operation|movement description of the ring binding implement which concerns on the same embodiment. FIG. 4 is a plan view showing an engaging portion between a binding ring and a lock hole according to the same embodiment; FIG. 10 is a diagram showing an assumed rotation range of the other cover according to the same embodiment; FIG. 10 is an operation explanatory view showing a mode of engagement between the binding ring and the lock hole according to the same embodiment; FIG. 10 is an operation explanatory view showing a mode of engagement between the binding ring and the lock hole according to the same embodiment; FIG. 10 is an operation explanatory view showing a mode of engagement between the binding ring and the lock hole according to the same embodiment;

An embodiment of the present invention will be described below with reference to the drawings.

This embodiment is a case where the present invention is applied to a ring file capable of realizing usability corresponding to a so-called lever arch file. As shown in FIGS. 1 to 4, this ring file RF consists of a file body 1 having a back cover 13 between base ends 11a and 12a of a pair of covers 11 and 12, and one side of the file body 1. It comprises a ring fastener 2 according to the present invention attached to the inner surface of the cover 11 in the vicinity of the base end 11a.

As shown in FIGS. 1 and 2, the file body 1 has a spine between the base end 11a of one cover 11 functioning as the back cover and the base end 12a of the other cover 12 functioning as the front cover. A cover 13 is provided, and a main folding line portion 11b is provided at the boundary between the cover 11 and the spine 13. As shown in FIG. The one cover sheet 11 has a binding attachment area 111 set in the vicinity of the base end 11a and a sheet corresponding area 112 adjacent to the binding attachment area 111. A sub-bending line portion 11c is formed at the boundary with the paper corresponding area 112. As shown in FIG. The other cover 12 has a binding ring holding area 121 set in the vicinity of the base end 12a and a sheet corresponding area 122 adjacent to the binding ring holding area 121. As shown in FIG. The binding ring holding area 121 is formed with lock holes 123 for holding the free ends of the binding rings 4F and 4B, which will be described later. is formed with a sub-bending line portion 12c. The back cover 13 is formed with finger hook holes 13a.

It should be noted that this file is intended to be used to replace paper with the lower side in FIG. It's called "back side".

As shown in FIGS. 5 to 8, 10 to 11 and 13 to 14, the ring binding tool 2 consists of a base 3 attached to the file body 1 and a pair of bindings provided on the base 3. It comprises rings 4F, 4B and a spring 5 built in the base 3.

Here, FIG. 5 is a partially broken plan view of the ring binder 2, and FIG. 6 is a front view of the ring binder 2. FIG. 7 and 8 are cross-sectional views along lines BB and CC in FIG. 5, respectively. FIG. 9 is an enlarged X arrow view of the main part in FIG. 10A and 10B are action explanatory diagrams for explaining the operation of the second ring forming members 7F and 7B, which will be described later, and FIG. 11 is a sectional view corresponding to FIG. 7 in the state shown in FIG. FIG. 12 is an enlarged view of a main part in FIG. 10. FIG. 13 is a front view showing a state in which second ring forming members 7F and 7B, which will be described later, are in an open posture (O), which will be described later, and FIG. 14 is a cross-sectional view corresponding to FIG. 7 in the state shown in FIG. It is a diagram.

As shown in FIGS. 6, 10 and 13, the binding rings 4F and 4B have base ends 61F and 61B supported by the base 3 and first engagement portions 63F and 63B at the tip ends 62F and 62B. Base end portions 71F and 71B are supported by the base 3, and distal end portions 72F and 72B have second engaging portions 73F and 73B. 6 in which the engaging portions 73F and 73B are engaged with the first engaging portions 63F and 63B to an open posture (O) in which the engagement is released as shown in FIG. ) and the second ring forming members 7F and 7B that can rotate between the two. The second ring forming members 7F and 7B are biased by the spring 5 in the opening direction. In this specification, the binding ring on the front side is denoted by reference numeral 4F, and the binding ring on the rear side is denoted by reference numeral 4B. In principle, each element constituting the binding ring 4F on the front side is also given a reference numeral with an F added to the end, and each element constituting the binding ring 4B on the back side also has a B added to the end in principle. are marked with Corresponding elements of the binding rings 4F and 4B on the front side and the back side are given the same names and the same reference numerals except for F or B at the end.

More specifically, the engaging portion of one of the ring forming members of each of the binding rings 4F, 4B is provided with at least a groove, and the engaging portion of the other ring forming member is provided with at least the groove. It has an engaging ridge. In this embodiment, as shown in FIGS. 9 and 12, the engaging portions 63F, 63B, 73F, and 73B of the first and second ring forming members 6F, 6B, 7F, and 7B are provided with ridges 631F. , 631B, 731F, 731B, and recessed grooves 632F, 632B, 732F, 732B, which are adjacent to and parallel to the ridges 631F, 631B, 731F, 731B, respectively. Further, the grooves 632F, 632B of the engaging portions 63F, 63B of the first ring forming members 6F, 6B are fitted with the ridges 731F, 731B of the engaging portions 73F, 73B of the second ring forming members 7F, 7B. While engaging, the concave grooves 732F and 732B of the engaging portions 73F and 73B of the second ring forming members 7F and 7B are engaged with the ridges 631F and 631B of the engaging portions 63F and 63B of the first ring forming members 6F and 6B. can engage.

The concave grooves 632F, 632B, 732F, 732B and the ridges 631F, 631B, 731F, 731B are formed by the axial centers L1F, L1B of the tip portions 61F, 61B, 71F, 71B of the ring forming members 6F, 6B, 7F, 7B. , L2F, and L2B. Specifically, as shown in FIG. 12, concave grooves 632F, 632B and ridges 631F, 631B provided in the engaging portions 63F, 63B of the first ring forming members 6F, 6B provide The ring forming members 6F, 6B are inclined by an angle θ in a front view with respect to the axial centers L1F, L1B of the distal end portions 62F, 62B of the ring forming members 6F, 6B. The concave grooves 732F, 732B and the ridges 731F, 731B provided in the second ring forming members 7F, 73B are inclined by an angle θ in front view with respect to the axial centers L2F, L2B of the distal end portions 72F, 72B of the second ring forming members 7F, 7B. I let you. In this embodiment, the inclination angle .theta. is set to 45.degree., but various values other than 90.degree. can be selected and adopted. Further, the concave grooves 732F, 732B and the ridges 731F, 731B provided in the second ring forming members 7F, 7B are, as shown in FIG. Rotation trajectories L3F and L3B between the closed posture (C) and the open posture (O) of the engaging portions 73F and 73B (more precisely, the trajectories L3F and L3B are the grooves 732F and 732B and It is set to form an angle φ with respect to tangential lines L31F and L31B at points where they intersect with the ridges 731F and 731B. Although the angle φ is set to 90° in this embodiment, it can be changed in various ways as long as it is close to 90°.

Further, as shown in FIG. 9, the concave groove 632F of the engaging portion 63F of the first ring forming member 6F on the front side is a linear groove opened toward the back side, The recessed groove 632B of the engaging portion 63B of the ring forming member 6B is a linear groove opened toward the front side. Furthermore, as shown in FIG. 9, the concave groove 732F of the engagement portion 73F of the second ring forming member 7F on the near side is a linear groove opened toward the near side, and the second ring forming member 7F on the far side The recessed groove 732B of the engaging portion 73B of the ring forming member 7B is a linear groove opened toward the inner side. That is, the recessed grooves 632F, 632B of the engaging portions 63F, 63B of the paired first ring forming members 6F, 6B are opened in the direction facing each other, and the paired second ring forming members 7F, 7B are open. The recessed grooves 732F, 732B of the engaging portions 73F, 73B are opened in directions away from each other. Each of the ridges 631F, 631B, 731F, 731B is provided adjacent to the tip side of each of the corresponding grooves 632F, 632B, 732F, 732B. ridges 631F and 631B of the engaging portions 63F and 63B of the second ring forming members 7F and 7B protrude in directions facing each other, and the ridges 731F and 731B of the engaging portions 73F and 73B of the paired second ring forming members 7F and 7B are separated from each other. projecting in the direction of As shown in FIGS. 9, 12, 16, 19 and 20, guide inclined surfaces 633F, 633B, 733F and 733B are formed on the tip side of the ridges 631F, 631B, 731F and 731B, By abutting the tip portions 62F, 62B of the first ring forming members 6F, 6B and the tip portions 72F, 72B of the second ring forming members 7F, 7B, the two ring forming members 6F, 6B, 7F, 7B are temporarily elastically displaced in the radial direction, and the respective ridges 631F, 631B, 731F, 731B are engaged with corresponding grooves 632F, 632B, 732F, 732B. In addition, in FIG. 12, the guiding inclined surface 633F is a patterned portion. In order to release this engagement, the distal end sides of the second ring forming members 7F, 7B are pinched in the direction toward each other to temporarily elastically deform the ring forming members 7F, 7B in the radial direction.

The first ring-forming members 6F, 6B described above are substantially straight members fixed to one side edge 3a of the base 3, and the second ring-forming members 7F, 7B are attached to the base 3. It is pivotally supported by the other side edge portion 3b and has a curved tip end. Therefore, the engaging portions 63F, 63B of the first ring forming members 6F, 6B and the engaging portions 73F, 73B of the second ring forming members 7F, 7B are offset from the center of the base 3 in the width direction. configured to engage in position. More specifically, as shown in FIG. 5, the base ends 61F, 61B of the first ring forming members 6F, 6B are fitted into the ring mounting holes 31a of the base 3 and fixed by caulking or the like. As shown in FIGS. 5 and 8, the second ring-forming members 7F, 7B are provided with shaft portions 711F, 711B at the base ends 71F, 71B, and the shaft portions 711F, 711B are connected to the base. 3 are inserted into cavities SP formed between the cavity forming portion 32 described later and the file body 1, and are supported by bearings 33 of the base 3 described later. The shaft portion 711F of the second ring forming member 7F on the near side and the shaft portion 711B of the second ring forming member 7B on the far side are positioned so that their distal ends face each other, and the shaft centers of the base 3 are aligned with each other. are pivotally supported respectively. The distal ends of the shaft portions 711F and 711B are connected to each other so as to be rotatable together by a connecting member 8 having an intermediate eccentric portion 81 that is eccentric with respect to the shaft portions 711F and 711B. Both the second ring forming members 7F, 7B and the connecting member 8 are integrally molded products made of metal wire.

As shown in FIG. 9, the tips 64F, 64B, 74F, 74B of the first and second ring forming members 6F, 6B, 7F, 7B are rounded. The radius of the tips 64F, 64B, 74F, 74B is such that the first ring forming members 6F, 6B and the second ring forming members 7F, 7B are engaged with each other to form binding rings 4F, 4B. This is to enable smooth movement of the bound sheets P along the binding rings 4F and 4B.

The base 3, as shown in FIGS. The cavity forming portion 32 is integrally formed on one side edge.

The base body 31 has a flat shape having a mounting flange 311 on its peripheral edge which is in contact with the file body 1 and is attached to the file body 1 via a fixing tool S such as a rivet. A hole 31a is provided, and base ends 61F and 61B of the first ring forming members 6F and 6B are fixed to the ring mounting hole 31a, respectively.

The cavity forming part 32 forms a cavity SP between itself and the file body 1 when attached to the file body 1 . Inside the cavity forming portion 32 facing the cavity SP, bearings 33 for pivotally supporting the base ends 71F and 71B of the second ring forming members 7F and 7B, and the spring disposed in the cavity SP 5 is provided with a spring bearing 34 supporting one end thereof.

More specifically, as shown in FIGS. 6 to 8, 10 to 11, and 13 to 14, the cavity forming portion 32 includes an upright wall 321 rising from one side edge of the base body 31 and the upright wall 321. It comprises a ceiling wall 322 extending from the upper end of the wall 321 while gradually lowering outward, and a descending wall 323 descending from the extending end of the ceiling wall 322. The bearings 33 are formed at both edge portions, and the spring bearings 34 are formed at an intermediate portion of the lower edge of the descending wall 323 .

The bearing 33, as shown in FIG. 8, is a partially cylindrical body curled so as to hold the shaft portions 711F, 711B of the base ends 71F, 71B of the second ring forming members 7F, 7B. It is provided integrally with the lower edge 323 a of the descending wall 323 .

As shown in FIGS. 7, 11 and 14, the spring bearing 34 is a flat plate-like one positioned between the bearings 33 and arranged at the bottom portion of the cavity SP. It extends in a cantilever manner from the edge 323a. The spring receiver 34 has a square shape in a plan view, and has a slit 34b for positioning the spring 4 in the vicinity of the extension end 34a.

In the base 3 described above, the base body 31, the cavity forming portion 32, the bearing 33, and the spring bearing 34 are integrally formed by subjecting a common sheet metal material to press working or the like. That is, the base 3 is an integrally molded product made of sheet metal.

Also, as shown in FIGS. 2 and 5, one side edge 3a of the base 3, specifically, the edge on the side where the ring mounting hole 31a is provided, is positioned away from the back cover 13 of the file body 1. The other side edge 3b of the base 3, more specifically, the edge on the cavity forming portion 32 side, is located near the boundary between the front cover 11 and the back cover 13 of the file main body 1. As shown in FIG.

The spring 5 is for urging the second ring-forming members 7F, 7B in the direction toward the open posture (O). is interposed in That is, as shown in FIGS. 7, 11 and 14, the spring 5 has a stationary portion 51 installed on the spring bearing 34 and a distal end portion 521 that elastically biases the intermediate eccentric portion 8 from below. and a curved connecting portion 53 that integrally connects the movable portion 52 and the stationary portion 51 together.

The stationary portion 51 has a plate-like shape and includes a tip bent portion 511 engaged with the extended end 34a of the spring bearing 34 and an intermediate bent portion 512 engaged with the slit 34b of the spring bearing 34 .

The movable portion 52 has a partially cylindrical shape with a tip portion 521 opening upward. is. By the action of the spring 5, the second ring forming members 7F and 7B are rotated to the open position (O). In this open posture (O), the connecting member 8 is set to abut against the top wall 322 of the cavity forming portion 32, and the locking action of the top wall 322 allows the second ring forming member 7F and 7B are held in the open position (O). That is, the cavity SP has a shape that allows the connecting member 8 to operate when the second ring forming members 7F and 7B rotate between the closed posture (C) and the open posture (O). Specifically, it is formed to have a sector shape when viewed from the front.

The ring file of this embodiment is for binding A4 size paper, for example, and the separation distance d between the binding rings 4F and 4B on the front side and the back side corresponds to the perforation pitch of a general two-hole file. is set to a value that Then, the position of the cavity forming portion 32 is adjusted so that the edge Pa on the binding side of the sheets P bound by the first ring forming members 6F and 6B is close to the standing wall 321 of the cavity forming portion 32 of the base 3. have set.

Next, the behavior of each part when moving the second ring forming members 7F, 7B from the open posture (O) to the closed posture (C) or in the opposite direction will be described.

When the second ring forming members 7F and 7B in the open posture (O) as shown in FIGS. 13 and 14 are applied with an operating force in the direction toward the closed posture (C), the spring 5 is opened as shown in FIG. is elastically deformed by receiving the transmission of the operating force via the intermediate eccentric portion 81 of the connecting member 8, and as shown in FIGS. hits the tips 62F, 62B of the first ring-forming members 6F, 6B. At this time, both the ring forming members 6F, 6B, 7F, 7B are guided by the guide inclined surfaces 633F, 633B, 733F, 733B and are temporarily elastically displaced in the radial direction. When further operating force is applied, each of the ridges 631F, 631B, 731F and 731B moves to a position facing each of the corresponding grooves 632F, 632B, 732F and 732B, and engages with the elastic restoring force. More specifically, the ridges 631F and 631B of the engagement portions 63F and 63B of the first ring forming members 6F and 6B correspond to the grooves 732F of the engagement portions 73F and 73B of the second ring forming members 7F and 7B. 732B, the engagement portions 73F and 73F of the second ring forming members 7F and 7B, the ridges 731F and 731B of the first ring forming members 6F and 6B and the grooves 632F of the engagement portions 63F and 63B of the first ring forming members 6F and 6B; 632B, the engaging portions 63F, 63B, 73F, 73B of the first and second ring forming members 6F, 6B, 7F, 7B are moved radially and toward each other by elastic restoring force. Then, the second ring forming members 7F, 7B assume the closed position (C) as shown in FIGS. 5-9.

The second ring forming members 7F, 7B are pinched toward each other to apply an operating force to engage the engaging portions 63F, 63B of the first ring forming members 6F, 6B with the second ring forming members 7F, 7B. When the engagement with the portions 73F, 73B is released, the biasing force of the spring 5 is transmitted to the second ring forming members 7F, 7B through the connecting member 8, thereby the second ring forming members 7F, 7B 7B is biased toward the open orientation (O). Then, when the second ring forming members 7F and 7B reach the open posture (O), the intermediate eccentric portion 81 of the connecting member 8 hits the top wall 322 of the cavity forming portion 32, and the second ring forming member Further rotation of 7F, 7B is restricted, and second ring forming members 7F, 7B are held in the open posture (O) by the ceiling wall 322 .

As described above, the ring file RF is provided with a back cover between the base ends of the pair of covers 11 and 12, and the back cover 13 is perpendicular to one cover 11 functioning as a back cover. A file body 1 capable of opening and closing the cover so that the other cover 12 functioning as a cover can be turned, and binding rings 4F and 4B provided in the vicinity of the base end 11a of one cover 11 of the file body 1. and a ring binding tool 2 having

Here, FIG. 15 is an enlarged plan view showing a related portion between the lock hole 123 provided in the other cover 12 and the ring binding tool 2. As shown in FIG. FIG. 16 is a diagram showing an assumed rotation range of the other cover 12. A solid line indicates a state in which the other cover 12 is separated from the binding ring 4F, and a rotation end 12d of the other cover 12 The imaginary lines each show the state in which they are in contact with each other. FIG. 17 is a cross-sectional view along the axis of the binding ring 4F when the other cover 12 is separated from the binding ring 4F. 18 is a cross-sectional view along the axis of the binding ring 4F in a state in which the other cover 12 is parallel to the one cover 11. FIG. FIG. 19 is a cross-sectional view along the axis of the binding ring 4F in a state where the rotating end 12d of the other cover 12 is in contact with the one cover 11. FIG.

The binding rings 4F, 4B of the ring binding tool 2 are provided with the first and second ring-forming members 6F, 6B, 7F, 7B whose tips are engaged with each other as described above. With such a configuration, the engagement is released when an external force for disengaging the ring forming members 6F, 6B, 7F and 7B is applied in the direction toward each other. That is, in this embodiment, the first ring-forming members 6F and 6B erected on the side of the base 1 opposite to the back cover (the side opposite to the back cover 13) are fixed to the base 1, and are fixed to the back cover 13 side. The erected second ring forming members 7F, 7B are rotated to engage with the first ring forming members 6F, 6B. , 6B, the first ring-forming members 6F, 6B are elastically deformed, and the engaging portions 63F, 63B become second ring-forming members 6F, 6B. The structure is such that the engaging portions 73F, 73B of the members 7F, 7B are overcome and the engagement between the first ring forming members 6F, 6B and the second ring forming members 7F, 7B is released.

The other cover 12 of the file body 1 has a lock hole 123 that engages the binding rings 4F and 4B without applying an external force for disengagement during the opening and closing of the cover.

The portion where the lock hole 123 and the ring fastener 2 are related will be described below. In the following description, only the front half of the ring binder 2 and the lock hole 123 on the front side will be described.

As shown in FIG. 15, the lock hole 123 has a slit 123a having a width corresponding to the wire diameter of the binding ring 4F and an elastically deforming portion 123b that partially reduces the width of the slit 123a. It is configured such that a portion of the binding ring 4F can be inserted into the slit 123a by utilizing the temporary elastic deformation of the elastic deformation portion 123b.

As shown in FIGS. 9 and 15, the ring binding tool 2 is erected on a base 3 attached to one cover 11 and a portion of the base 3 opposite the back cover (opposite to the back cover 13). a first ring-forming member 6F formed on the back cover 13 of the base 3, and a second ring having an extension part standing on the back cover 13 side of the base 3 and extending in the direction opposite to the back cover (the direction opposite to the back cover 13) on the leading end side. and a forming member 7F. The ring binder 2 is configured to use the binding ring 4F (4B) in the closed posture (C) or the open posture (O) by performing the operation described below. That is, the ring binding device 2 rotates the first and second ring forming members 6F and 7F relative to each other (rotation of the second ring forming member 7F in the opposite direction to the back cover 13), thereby The binding ring 4F is configured to take the closed posture (C) by applying an operation to bring the portions 62F and 72F closer to each other and engage the engagement portions 63F and 73F. In addition, as described above, this ring binding device 2 can be operated to release the engagement between the engaging portions 63F and 73F by pinching the second ring forming members 7F and 7B in the direction of approaching each other and applying an operating force. By being applied, the binding rings 4F and 4B are configured to assume the open posture (O). On the other hand, regardless of the intention of the user, when an external force acts on the first ring forming member 6F in the engaged state in the direction of approaching the back cover 13, the engagement portions 63F and 73F of the ring binding tool 2 are pushed out. Since the ridges 631F, 731F and the grooves 632F, 732F are not perpendicular to the direction of the external force, the first ring forming member 6F may be elastically deformed in the direction approaching the spine 13. Permissible. Therefore, when the external force reaches a certain level or more, the engagement state between the engaging portion 63F of the first ring forming member 6F and the engaging portion 73F of the second ring forming member 7F is released. .

As shown in FIG. 16, the slit 123a of the lock hole 123 has a longitudinal edge 123x substantially aligned with the first ring forming member 6F within the assumed rotation range R1 of the other cover 12 in the cover open/closed state. The elastically deforming portion 123b of the lock hole 123 is sized so that it does not come into contact with the extending portion 75F of the second ring forming member 7F.

Specifically, as shown in FIGS. 17 to 19, the first ring forming member 6F has a tip portion 62F that is inclined toward the spine 13 direction. In other words, the first ring forming member 6F has an inclined portion inclined toward the back cover 13 on the leading end side. On the other hand, the base end portion 71F of the second ring forming member 7F is supported by the base 3, and the base end portion 71F stands substantially perpendicularly to the base 3. An extending portion 75F extends toward the member 6F. The extending portion 75F includes a base end curved portion 751F, an intermediate linear portion 752F extending from the base end curved portion 751F in the direction opposite to the spine (the direction opposite to the spine 13), and a base 3 extending from the intermediate linear portion 752F. A tip curved portion 753F that curves to the side and abuts against the tip of the first ring forming member 6F, and the elastic deformation portion 123b of the lock hole 123 is engaged with the intermediate linear portion 752F. be.

Here, as shown in FIG. 16, the assumed rotation range R1 of the other cover sheet 12 (front cover sheet) is defined as the rotation range of the other cover sheet 12 from the position where the other cover sheet 12 is separated from the binding ring 4F. It means the range up to the position where the rotating end 12 d abuts on one of the cover sheets 11 .

The inner half of the ring binder 2 and the lock hole 123 on the inner side also have the same configuration as the front half and the lock hole 123 on the front side of the ring binder 2, and have the same configuration. Parts are given reference numerals in which the suffix F is changed to B, and description thereof is omitted.

With such a configuration, as shown in FIG. 1, by unfolding the pair of covers 11 and 12 and spine 13 in a plane, the ring binding tool 2 can be fully exposed. become. Therefore, by opening and closing the pair of binding rings 4F, 4B of the ring binder 2, it is possible to attach and detach paper sheets from the ring binder 2. As shown in FIG.

From this unfolded state, the back cover 13 is erected until it is perpendicular to one cover 11 (back cover), and the other cover 12 (front cover) is rotated with respect to the back cover 13, thereby forming the ring file RF. can be closed.

In this process, the cover can be opened and closed so that the other cover 12 can be rotated with respect to the spine 13 perpendicular to the cover 11. Then, the pair of lock holes 123 provided in the other cover 12 are engaged with the binding rings 4F and 4B of the corresponding binding tools, respectively, and the other cover 12 is in the closed position substantially parallel to the one cover 11. will be retained. Specifically, when an operating force in the closing direction is applied to the other cover 12, the extending portions 75F, 75B of the second ring forming members 7F, 7B of the binding rings 4F, 4B corresponding to the lock holes 123 enters the lock hole 123, the elastic deformation portion 123b of the lock hole 123 is temporarily deformed and engaged with the inner peripheral side of the intermediate linear portions 752F, 752B of the extension portions 75F, 75B.

When the other cover 12 is released in this engaged state, the other cover 12 is held in the closed position substantially parallel to the one cover 11, but the elastic deformation portion 123b of the lock hole 123 is When the binding rings 4F, 4B are engaged with the inner peripheral sides, the binding rings 4F, 4B are locked as shown in the imaginary line of FIG. 16 and FIG. There is a possibility that the other cover 12 will further enter the slit 123 a of the hole 123 and rotate until the tip 12 d of the other cover 12 reaches the one cover 11 .

However, in the present ring file RF, the slit 123a of the lock hole 123 is within the assumed rotation range R1 of the other cover 12, as shown in FIGS. 1 ring forming members 6F, 6B are set so that the ends of the slits 123a do not come into contact with the first ring forming members 6F, 6B even if the other cover 12 is closed too much due to excessive momentum. There is no Therefore, no external force for releasing the engagement acts on the first ring forming members 6F, 6B. It is possible to prevent an unexpected situation in which the ring forming members 6F, 6B and the second ring forming members 7F, 7B are disengaged from each other.

The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the present invention.

For example, the number of binding rings of the ring binding tool is not limited to two, and may be one or three or more. Also, the binding ring may rotate in a direction in which the first and second ring forming members are moved toward and away from each other. However, the problem of the present invention is that the first ring-forming member is fixed to the base and stands straight up, and the second ring-forming member has an extension portion extending toward the back cover side on the tip side. Since this problem occurs remarkably in a binding tool having a binding ring, it is particularly significant to apply the present invention to such a type of ring file.

Also, even when such a type of binding tool is used, the first ring-forming member is not limited to having an inclined portion inclined in the direction of the back cover on the leading end side, but may have such an inclined portion. If the present invention is applied to objects, particularly remarkable effects can be obtained. That is, when the front cover is further closed with the edge of the slit in contact with the inclined portion, the guiding action of the inclined portion strongly tilts the first ring forming member in the direction of the back cover to open the binding ring. However, if the present invention is applied, such a problem can be reliably eliminated.

In addition, in the above-described embodiment, the inclination angles of the concave grooves and the ridges provided at the engaging portions of the first and second ring forming members with respect to the axial center of the tip of the ring forming member when viewed from the front are Although .theta. is set to 45.degree., as described above, the inclination angle .theta. may be arbitrarily set other than 90.degree. Further, in the above-described embodiment, the grooves and ridges provided on the second ring forming member correspond to the rotation trajectory between the closed posture and the open posture of the engaging portion of the second ring forming member. Although the angle φ is 90°, this angle φ may be set arbitrarily, such as 120°. In particular, when the above-mentioned inclination angle θ is 60° or more and a value close to 90°, or when the above-mentioned concave groove and ridge make an angle φ with respect to the rotation locus, it is 120° or more and a value close to 180°. In the case of , the grooves and ridges are shortened, so there are fewer parts to regulate the external force applied to the back cover side, and the phenomenon of disengagement is likely to occur in a state close to skidding, but a ring with such a configuration If the present invention is applied to a file, the main effect of the present invention can be preferably obtained because the ring file does not receive an external force toward the back cover when the front cover is held in the closed posture.

Furthermore, the extending portion of the second ring forming member is not limited to the illustrated example, and for example, the extending portion as a whole may be curved. However, as in the previous embodiment, the extension of the second ring-forming member has an intermediate linear portion in between and the elastic deformation portion of the lock hole engages the intermediate linear portion. By doing so, it is possible to minimize the protrusion dimension of the binding ring with respect to the base, and it is possible to reduce the thickness dimension of the entire ring file without lowering the binding performance.

The size of the slit of the lock hole is preferably set to a value that does not touch the first ring forming member at all within the assumed rotation range of the front cover, as in the illustrated example. The present invention also includes a mode in which the portion lightly touches the ring forming member, but cannot be strongly energized to apply an external force for disengaging the ring forming member within the assumed rotation range.

In addition, various modifications may be made without departing from the gist of the present invention.

RF... Ring file 1... File body 11... One cover 11a... Base end of one cover 12... The other cover 123... Lock hole 123a... Slit 123b... Elastic deformation part 123x... Longitudinal edge of slit 13... Back cover 2 Ring binding tool 3 Base 4F, 4B Binding ring 6F, 6B First ring forming member 62F, 62B First end of first ring forming member 7F, 7B Second ring forming member 72F, 72B ... tip portion (extending portion) of the second ring-forming member
721F, 721B ... base end curved portions 722F, 722B ... intermediate linear portions 723F, 723B ... distal end curved portions R1 ... assumed rotation range

Claims (5)

A file body provided with a back cover between base ends of a pair of cover covers and capable of taking a cover opening/closing state in which the other cover can be rotated with respect to the spine perpendicular to one cover, and the file body. A ring binding tool having a binding ring provided in the vicinity of the base end of one cover,
The binding ring comprises first and second ring forming members whose tips are engaged with each other. configured to be disengaged,
A ring file in which the other cover has a lock hole that engages with the binding ring without applying an external force for releasing the engagement while the cover is being opened and closed. The lock hole has a slit having a width dimension corresponding to the wire diameter of the binding ring, and an elastically deforming portion that reduces the width of a part of the slit,
2. The ring file according to claim 1, wherein a part of said binding ring can be inserted into said slit by utilizing temporary elastic deformation of said elastic deformation portion. The ring binding tool comprises a base attached to the one cover, a first ring-forming member erected at a portion of the base opposite the spine, and a portion of the base at the spine. and a second ring forming member having an extending portion extending in the direction opposite to the back cover on the front end side thereof, and the front end portions thereof can be engaged and disengaged by relative rotation of the first and second ring forming members. and
The slit of the lock hole is set to a dimension such that the longitudinal edge thereof does not substantially come into contact with the first ring-forming member within the assumed rotation range of the other cover in the cover open/closed state,
The ring file, wherein the elastically deformable portion of the lock hole contacts and engages with the extending portion of the second ring forming member. The extending portion of the second ring forming member includes a base end curved portion, an intermediate straight portion extending from the base end curved portion in the direction opposite to the spine, and a curved portion toward the base side from the intermediate straight portion. 4. The ring file according to claim 3, further comprising a curved tip portion abutting the tip of the first ring forming member, and wherein the elastic deformation portion of the lock hole is engaged with the intermediate linear portion. . The assumed rotation range of the other cover is a range from a position where the other cover is separated from the binding ring to a position where a rotation end of the other cover is in contact with the one cover. 5. A ring file according to item 3 or 4.

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