CN114763039A - Ring type file - Google Patents

Abstract

In a ring-type file provided with a file body and a ring-type binding tool, the binding state of paper and the like is prevented from being released when a front cover is kept in a closed posture, the file body is formed by arranging a back cover between the base ends of a pair of covers, and can adopt a cover opening and closing state in which the other cover can be rotated relative to the back cover orthogonal to one cover, and the ring-type binding tool is provided with a binding ring in the vicinity of the base end of one cover of the file body. In a ring-type file in which a binding ring includes 1 st and 2 nd ring forming members whose tip end portions are engaged with each other and in which engagement-releasing external force for biasing the two ring forming members in a direction to approach each other is applied, the other cover has a lock hole which is engaged with the binding ring without applying the engagement-releasing external force to the binding ring in the middle of the cover being opened and closed.

Description

Ring type file

Technical Field

The present invention relates to a ring-type file having a cover provided with a ring-type binding tool.

Background

Conventionally, as this type of ring-type file, a ring-type file is known which includes a file main body having a spine provided between base ends of a front cover and a rear cover and capable of assuming a cover open/close state in which the front cover can be rotated with respect to the spine orthogonal to the rear cover, and a ring-type binder having a binding ring provided in a portion near the base end of the rear cover of the file main body (see, for example, patent document 1).

In such a ring-type file, there are many ring-type files in which a lock hole is provided in the front cover and the lock hole is engaged with a binding ring of a ring-type binding tool, whereby the front cover can be held in a closed posture substantially parallel to the rear cover.

Documents of the prior art

Patent literature

Patent document 1: japanese patent laid-open publication No. 2018-34365

Disclosure of Invention

Problems to be solved by the invention

However, in the above-described conventional ring folder, the following are pointed out: although rare, the following phenomena occur: when the front cover is held in the closed position, the engagement between one of the 1 st and 2 nd loop forming members forming the binding loop and the other engagement is released, and the bound state of the sheets or the like is released.

Means for solving the problems

The present inventors have made various investigations to find out the cause of such a problem, and as a result, have found that: this problem occurs in a binding tool of the type in which the engagement between the distal ends of the two ring forming members is released by biasing the 1 st and 2 nd ring forming members forming the binding rings in the direction of approaching each other. Further, the following phenomena are recognized: in the conventional ring-type file, the edge on the reverse-spine-sealing side of the locking hole abuts against the 1 st ring forming member that is far from the spine during locking, and therefore, if the locking hole is strongly fitted to the binder ring, the 1 st ring forming member is biased so as to be pulled toward the spine, and as a result, an external force in a direction in which the 1 st and 2 nd ring forming members approach each other acts on the first and second ring forming members, and the engagement between the tips of the two ring forming members is released as the engaging portion with the other engaging portion passes over.

The present invention has been made based on the finding result, and a ring-type document holder according to the invention described in claim 1 includes a holder main body having a back cover provided between base ends of paired covers, and can adopt a cover opening/closing state in which the other cover can be rotated with respect to the spine orthogonal to the one cover, the ring-type binding tool has a binding ring provided in the vicinity of the base end of one cover of the folder body, the binding ring having a 1 st and a 2 nd ring forming members for engaging the tip end portions thereof with each other, and is configured to be released when an external force for releasing the engagement is applied to urge the two ring forming members in a direction of approaching each other, the other cover has a lock hole that engages with the binder ring without applying an external force for releasing engagement to the binder ring in the middle of the cover being in the open-closed state.

A ring-type file according to claim 2 of the present invention is the ring-type file according to claim 1, wherein the locking hole includes a slit having a width corresponding to a diameter of the wire of the binding ring and an elastic deformation portion that reduces a width of a part of the slit, and the ring-type file is configured so that the part of the binding ring can be inserted into the slit by temporary elastic deformation of the elastic deformation portion.

The ring-type file according to the invention described in claim 3 is a ring-type file according to claim 2, the ring binder includes a base portion attached to the one cover, a 1 st ring forming member erected on a portion of the base portion on a back-sealing side, and a 2 nd ring forming member erected on a portion of the base portion on the back-sealing side and having an extension portion extending in a back-sealing direction on a distal end side, the tip parts of the first and second ring forming members can be engaged with and disengaged from each other by relative rotation of the first and second ring forming members, the slit of the locking hole is set to a size such that the longitudinal end edge of the slit does not substantially contact the 1 st ring forming member within the range of the envisaged rotation of the other cover in the cover open/closed state, the elastically deformable portion of the locking hole is engaged with the extending portion of the 2 nd ring forming member by contacting the extending portion.

In the present invention, "substantially not in contact" is a concept including a state of not being in contact at all and a state of being in contact only to the extent that an external force for releasing engagement cannot be applied to the binder ring.

In the ring-shaped file according to the invention described in claim 4, in the ring-shaped file according to claim 3, the extension portion of the 2 nd ring forming member includes a base end curved portion, an intermediate straight portion extending from the base end curved portion in the reverse spine direction, and a tip end curved portion curved from the intermediate straight portion toward the base side and abutting against the tip end of the 1 st ring forming member, and the elastically deformable portion of the lock hole is engaged with the intermediate straight portion.

In the present invention, the "intermediate straight line portion" is a concept including not only a completely straight line shape but also a gently curved shape (a shape having a curvature smaller than those of the base end curved portion and the distal end curved portion).

In the ring-type file according to claim 5 of the present invention, in the ring-type file according to claim 3 or 4, the expected range of rotation of the other cover is a range from a position at which the other cover is separated from the binder ring to a position at which a rotation end of the other cover is brought into contact with the one cover.

Effects of the invention

According to the present invention, in a ring-type file in which a lock hole is provided in a front cover and a binder ring of a ring-type binding tool is engaged with the lock hole, thereby holding the front cover in a closed posture substantially parallel to a back cover, it is possible to prevent a problem that when the front cover is held in the closed posture, one of engagement portions of 1 st and 2 nd ring forming members forming the binder ring is disengaged from the other engagement portion, and a bound state of paper or the like is released.

Drawings

Fig. 1 is a perspective view showing a ring-type folder according to an embodiment of the present invention.

Fig. 2 is a plan view showing the ring type folder of this embodiment.

Fig. 3 is a front view showing the ring type folder of this embodiment.

Fig. 4 is a view from direction a in fig. 3.

Fig. 5 is a plan view showing the ring binder of this embodiment.

Fig. 6 is a front view showing the ring binder of this embodiment.

Fig. 7 is a sectional view B-B in fig. 5.

Fig. 8 is a cross-sectional view taken along line C-C of fig. 5.

Fig. 9 is an X-direction view in fig. 6.

Fig. 10 is an explanatory view of the operation of the ring binder of this embodiment.

Fig. 11 is a sectional view for explaining the operation of the ring binder of the embodiment.

Fig. 12 is an enlarged view of a main portion of fig. 10.

Fig. 13 is an explanatory view of the operation of the ring binder of this embodiment.

Fig. 14 is a sectional view for explaining the operation of the ring binder of the embodiment.

Fig. 15 is a plan view showing an engagement portion between the binding ring and the locking hole in the embodiment.

Fig. 16 is a view showing an assumed range of rotation of the cover according to the other embodiment.

Fig. 17 is an explanatory view showing an engagement mode of the binder ring and the lock hole according to the embodiment.

Fig. 18 is an explanatory view showing an engagement form of the binding ring and the lock hole in the embodiment.

Fig. 19 is an explanatory view showing an engagement form of the binding ring and the lock hole in the embodiment.

Description of the reference numerals

RF … ring folder

1 … folder body

11 … cover

11a … base end of cover

12 … cover of another aspect

123 … locking hole

123a … slit

123b … elastic deformation part

Longitudinal end edge of 123x … slit

13 … seal ridge

2 … Ring type binding tool

3 … base

4F, 4B … binding ring

6F, 6B … st Ring Forming Member

62F, 62B … Top end portion of 1 st Ring Forming member

7F, 7B … No. 2 Ring Forming Member

72F, 72B … Top end portion (extension) of 2 nd Ring Forming member

721F, 721B … base end bending part

722F, 722B … middle straight line part

723F, 723B … Top bend

Range of rotation envisaged by R1 …

Detailed Description

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

In the present embodiment, the present invention is applied to a ring folder that can realize usability according to a so-called "quick-action" folder. As shown in fig. 1 to 4, the ring-type file RF includes a file body 1 having a back cover 13 provided between base ends 11a and 12a of paired covers 11 and 12, and a ring-type binder 2 of the present invention attached to an inner surface of one of the covers 11 of the file body 1 in the vicinity of the base end 11 a.

As shown in fig. 1 and 2, the folder body 1 is formed by providing a back cover 13 between a base end 11a of one cover 11 functioning as a back cover and a base end 12a of the other cover 12 functioning as a front cover, and a main bending line portion 11b is provided at a boundary between the cover 11 and the back cover 13. The one cover 11 includes a binding tool attachment region 111 set in a portion near the base end 11a, and a sheet corresponding region 112 adjacent to the binding tool attachment region 111, and a sub-bend line portion 11c is formed at a boundary between the binding tool attachment region 111 and the sheet corresponding region 112. The other cover 12 includes a binder holding area 121 set in a portion near the base end 12a, and a sheet corresponding area 122 adjacent to the binder holding area 121. A lock hole 123 for holding free end portions of the binding rings 4F and 4B described later is formed in the binding ring holding region 121, and a sub-bending portion 12c is formed at a boundary between the binding ring holding region 121 and the paper sheet corresponding region 122. A finger hook hole 13a is formed in the seal ridge 13.

Note that, in this folder, it is assumed that the sheet replacement operation is performed with the lower side in fig. 2 being the near side, and hereinafter, in this specification, the lower side in fig. 2 is referred to as the "near side" and the upper side is referred to as the "far side".

As shown in fig. 5 to 8, 10 to 11, and 13 to 14, the ring-type binding tool 2 includes a base portion 3 attached to the folder body 1, 1 pair of binder rings 4F and 4B provided in the base portion 3, and a spring 5 incorporated in the base portion 3.

Here, fig. 5 is a plan view showing the ring binder 2 partially cut away, and fig. 6 is a front view of the ring binder 2. Fig. 7 and 8 are cross-sectional views taken along lines B-B and C-C of fig. 5, respectively. Fig. 9 is an enlarged X-direction view of a main portion in fig. 6. Fig. 10 is an explanatory view for explaining operations of the 2 nd ring forming members 7F and 7B described later, and fig. 11 is a cross-sectional view corresponding to fig. 7 in the state shown in fig. 10. Fig. 12 is an enlarged view of a main portion of fig. 10. Fig. 13 is a front view showing a state in which a 2 nd ring forming member 7F, 7B described later is brought into an open posture (O) described later, and fig. 14 is a cross-sectional view corresponding to fig. 7 in the state shown in fig. 13.

As shown in fig. 6, 10 and 13, the binder rings 4F and 4B are composed of 1 st ring forming members 6F and 6B and 2 nd ring forming members 7F and 7B, base end portions 61F and 61B of the 1 st ring forming members 6F and 6B are supported by the base 3, the 1 st ring forming members 6F and 6B have 1 st engaging portions 63F and 63B at tip end portions 62F and 62B, base end portions 71F and 71B of the 2 nd ring forming members 7F and 7B are supported by the base 3, the 2 nd ring forming members 7F, 7B have 2 nd engaging portions 73F, 73B at distal end portions 72F, 72B, and the 2 nd ring forming members 7F, 7B are rotatable between a closed posture (C) shown in fig. 6 in which the 2 nd engaging portions 73F, 73B are engaged with the 1 st engaging portions 63F, 63B and an open posture (O) shown in fig. 13 in which the engagement is released. The 2 nd ring forming members 7F, 7B are urged in the opening direction by the spring 5. In the present specification, the front binding ring is denoted by reference numeral 4F, and the back binding ring is denoted by reference numeral 4B. Further, elements constituting the front binding ring 4F are also denoted by reference numerals with F added to the tail thereof as a rule, and elements constituting the back binding ring 4B are also denoted by reference numerals with B added to the tail thereof as a rule. In addition, in each element constituting the front and rear binder rings 4F and 4B, the corresponding element is given the same name, and the same reference numeral is given except for the last F or B.

More specifically, the engaging portion of one of the ring forming members of the binding rings 4F and 4B has at least a recessed groove, and the engaging portion of the other ring forming member has at least a projecting strip that engages with the recessed groove. In addition, in this embodiment, as shown in fig. 9 and 12, the engaging portions 63F, 63B, 73F, 73B of the 1 st and 2 nd ring forming members 6F, 6B, 7F, 7B are provided with projections 631F, 631B, 731F, 731B and recesses 632F, 632B, 732F, 732B adjacent to the projections 631F, 631B, 731F, 731B in parallel, respectively. Furthermore, the convex pieces 731F, 731B of the engaging portions 73F, 73B of the 2 nd ring forming members 7F, 7B can be engaged with the concave grooves 632F, 632B of the engaging portions 63F, 63B of the 1 st ring forming members 6F, 6B, and the convex pieces 631F, 631B of the engaging portions 63F, 63B of the 1 st ring forming members 6F, 6B can be engaged with the concave grooves 732F, 732B of the engaging portions 73F, 73B of the 2 nd ring forming members 7F, 7B.

The concave grooves 632F, 632B, 732F, 732B and the convex strips 631F, 631B, 731F, 731B are provided so as to be inclined at an angle other than a right angle with respect to the axial centers L1F, L1B, L2F, L2B at the tip end portions 61F, 61B, 71F, 71B of the ring forming members 6F, 6B, 7F, 7B. Specifically, as shown in fig. 12, the concave grooves 632F, 632B and the convex strips 631F, 631B provided in the engaging portions 63F, 63B of the 1 st ring forming members 6F, 6B are inclined by an angle θ, for example, in the front view with respect to the axial centers L1F, L1B of the tip portions 62F, 62B of the 1 st ring forming members 6F, 6B, and the concave grooves 732F, 732B and the convex strips 731F, 731B provided in the engaging portions 73F, 73B of the 2 nd ring forming members 7F, 7B are inclined by an angle θ, for example, in the front view with respect to the axial centers L2F, L2B of the tip portions 72F, 72B of the 2 nd ring forming members 7F, 7B. In this embodiment, the inclination angle θ is set to 45 ° in the present embodiment, but may be selected and used variously as long as it is a value other than 90 °. As shown in fig. 12, the recessed grooves 732F and 732B and the projecting strips 731F and 731B of the 2 nd ring forming members 7F and 7B are set so as to be angled with respect to the rotational trajectories L3F and L3B (more precisely, tangents L31F and L31 Φ 31B at the portions where the rotational trajectories L3F and L3B intersect the recessed grooves 732F and 732B and the projecting strips 731F and 731B) between the closed posture (C) and the open posture (O) of the engaging portions 73F and 73B of the 2 nd ring forming members 7F and 7B. The angle Φ is set to 90 ° in the present embodiment, but may be variously changed as long as it is a value close to 90 °.

As shown in fig. 9, the recessed groove 632F of the engaging portion 63F of the front 1 st ring forming member 6F is a linear groove that opens to the rear side, and the recessed groove 632B of the engaging portion 63B of the rear 1 st ring forming member 6B is a linear groove that opens to the front side. As shown in fig. 9, the recessed groove 732F of the engaging portion 73F of the 2 nd ring forming member 7F on the near side is a linear groove opened toward the near side, and the recessed groove 732B of the engaging portion 73B of the 2 nd ring forming member 7B on the far side is a linear groove opened toward the far side. That is, the recesses 632F, 632B of the engaging portions 63F, 63B of the pair of 1 st ring forming members 6F, 6B are open in the direction facing each other, and the recesses 732F, 732B of the engaging portions 73F, 73B of the pair of 2 nd ring forming members 7F, 7B are open in the direction away from each other. The projections 631F, 631B, 731F, 731B are provided adjacent to each other on the tip end side of the corresponding recesses 632F, 632B, 732F, 732B, the projections 631F, 631B of the engaging portions 63F, 63B of the pair of 1 st ring forming members 6F, 6B project in the direction facing each other, and the projections 731F, 731B of the engaging portions 73F, 73B of the pair of 2 nd ring forming members 7F, 7B project in the direction away from each other. As shown in fig. 9, 12, 16, and 19, guide inclined surfaces 633F, 633B, 733F, and 733B are formed on tip end sides of the convex strips 631F, 631B, 731F, and 731B, and by abutting the tip end portions 62F and 62B of the 1 st ring forming members 6F and 6B and the tip end portions 72F and 72B of the 2 nd ring forming members 7F and 7B against each other, the two ring forming members 6F, 6B, 7F, and 7B are temporarily elastically displaced in the radial direction, and the convex strips 631F, 631B, 731F, and 731B engage with the corresponding concave grooves 632F, 632B, 732F, 732B. In fig. 12, the guide inclined surface 633F is a portion where a pattern is provided. When the engagement is released, the 2 nd ring forming members 7F and 7B may be temporarily elastically deformed in the radial direction by pinching the tip sides of the ring forming members 7F and 7B in a direction in which they approach each other.

The above-described 1 st loop forming members 6F, 6B are substantially linear members fixed to one side edge portion 3a of the base portion 3, and the 2 nd loop forming members 7F, 7B are members that are pivotally supported by the other side edge portion 3B of the base portion 3 and bent at the tip end side. Thus, the engaging portions 63F, 63B of the 1 st ring forming members 6F, 6B and the engaging portions 73F, 73B of the 2 nd ring forming members 7F, 7B are configured to engage at positions deviated from the widthwise center of the base 3. Specifically, as shown in fig. 5, the base end portions 61F and 61B of the 1 st ring forming members 6F and 6B are fitted into the ring mounting hole 31a of the base 3 and fixed by caulking or the like. As shown in fig. 5 and 8, the 2 nd ring forming members 7F and 7B include shaft portions 711F and 711B at base end portions 71F and 71B, and the shaft portions 711F and 711B are inserted into cavities SP formed between a cavity forming portion 32, which will be described later, of the base portion 3 and the folder body 1, and are pivotally supported by bearings 33, which will be described later, of the base portion 3. The shaft portion 711F of the 2 nd ring forming member 7F on the front side and the shaft portion 711B of the 2 nd ring forming member 7B on the rear side are pivotally supported by the base 3 with their axial centers aligned in a posture in which the tip ends face each other. The distal ends of the shaft portions 711F and 711B are coupled to each other by a coupling member 8 having an intermediate eccentric portion 81 eccentric with respect to the two shaft portions 711F and 711B so as to be integrally rotatable. The two 2 nd ring forming members 7F and 7B and the connecting member 8 are integrally formed articles made of metal wire.

As shown in fig. 9, the leading ends 64F, 64B, 74F, and 74B of the 1 st and 2 nd ring forming members 6F, 6B, 7F, and 7B are rounded. The arcs of the leading ends 64F, 64B, 74F, 74B are used to allow the stapled paper P to smoothly move along the staple rings 4F, 4B in a state where the 1 st loop forming members 6F, 6B and the 2 nd loop forming members 7F, 7B are engaged with each other to form the staple rings 4F, 4B.

As shown in fig. 1 to 2, 5 to 8, 10 to 11, and 13 to 14, the base 3 includes a base body 31 attached to the folder body 1, and the hollow forming portion 32 integrally formed at one side edge of the base body 31.

The base body 31 has a flat shape having a mounting flange 311 at the periphery thereof, which is in contact with the folder body 1 and is mounted to the folder body 1 via a fastening tool S such as a rivet, and has ring mounting holes 31a at the front and rear end portions, and base end portions 61F and 61B of the 1 st ring forming members 6F and 6B are fixed to the ring mounting holes 31a, respectively.

The hollow forming portion 32 forms a hollow SP with the folder body 1 in a state of being attached to the folder body 1. Inside the hollow forming portion 32 facing the hollow SP, a bearing 33 that pivotally supports base end portions 71F, 71B of the 2 nd ring forming members 7F, 7B and a spring holder 34 that supports one end of the spring 5 disposed in the hollow SP are provided.

Specifically, as shown in fig. 6 to 8, 10 to 11, and 13 to 14, the cavity forming portion 32 includes an upright wall 321 that rises from one side edge of the base main body 31, a top wall 322 that gradually becomes lower and extends outward from an upper end of the upright wall 321, and a depressed wall 323 that descends from an extending end of the top wall 322, the bearings 33 are formed at both end portions of a lower edge of the depressed wall 323, and the spring holder 34 is formed at a middle portion of the lower edge of the depressed wall 323.

As shown in fig. 8, the bearing 33 is a partially cylindrical member that is curled so as to wrap shaft portions 711F and 711B of base end portions 71F and 71B of the 2 nd ring forming members 7F and 7B, and is integrally provided on a lower edge 323a of the descending wall 323.

As shown in fig. 7, 11 and 14, the spring holder 34 is a flat plate-shaped member located between the two bearings 33 and disposed at the bottom portion of the hollow SP, and extends in a cantilever state from a lower edge 323a of the descending wall 323. The spring holder 34 is a rectangular member in plan view, and includes a slit 34b for positioning the spring 5 in the vicinity of the extended end 34 a.

The base portion 3 described above is formed by integrally forming the base main body 31, the hollow portion 32, the bearing 33, and the spring receiver 34 by press working or the like of a common metal plate material. That is, the base 3 is an integrally molded product made of a metal plate.

As shown in fig. 2 and 5, one side edge 3a (specifically, an end edge on the side where the ring attachment hole 31a is provided) of the base portion 3 is located on the side away from the back cover 13 of the file folder body 1, and the other side edge 3b (specifically, an end edge on the side of the hollow forming portion 32) of the base portion 3 is located in the vicinity of the boundary between the cover 11 and the back cover 13 of the file folder body 1.

The spring 5 is interposed between the spring support 34 and the intermediate eccentric portion 81 of the coupling member 8, and biases the 2 nd ring forming members 7F and 7B in a direction toward the open posture (O). That is, as shown in fig. 7, 11, and 14, the spring 5 is a plate spring-like member integrally including a stationary portion 51 provided in the spring holder 34, a movable portion 52 elastically biasing the intermediate eccentric portion 8 from below at a tip end portion 521, and a curved coupling portion 53 integrally connecting the movable portion 52 and the stationary portion 51.

The stationary portion 51 is a flat plate-shaped member having a distal end bent portion 511 engaged with the extending end 34a of the spring holder 34 and an intermediate bent portion 512 engaged with the slit 34b of the spring holder 34.

The movable portion 52 has a partially cylindrical shape with a tip end portion 521 opened upward, and can be biased by wrapping the intermediate eccentric portion 81 of the coupling member 8 at the tip end portion 521. By the action of this spring 5, the 2 nd ring forming members 7F, 7B are rotated to the open posture (O). In the open posture (O), the connecting member 8 is set to abut against the ceiling wall 322 of the cavity forming portion 32, and the 2 nd ring forming members 7F and 7B are held in the open posture (O) by the locking action of the ceiling wall 322. That is, the cavity SP is formed in a shape (specifically, a front view sector shape) that allows the coupling member 8 to operate when the 2 nd ring forming members 7F and 7B rotate between the closed posture (C) and the open posture (O).

The ring-type folder of this embodiment is used for binding sheets of a4 size, for example, and the distance d between the front and back binding rings 4F and 4B is set to a value corresponding to the perforation pitch of a general two-hole folder. The position of the cavity-forming portion 32 is set so that the end edge Pa of the paper P bound to the 1 st loop-forming member 6F, 6B on the binding root side (binding work side) approaches the upright wall 321 of the cavity-forming portion 32 of the base 3.

Next, the behavior of each section when the 2 nd ring forming members 7F and 7B are moved from the open posture (O) to the closed posture (C) or in the opposite direction will be described.

When an operating force in the direction toward the closed posture (C) is applied to the 2 nd ring forming members 7F, 7B in the open posture (O) as shown in fig. 13 and 14, the spring 5 is elastically deformed by receiving the transmission of the operating force through the intermediate eccentric portion 81 of the connecting member 8 as shown in fig. 11, and the tip portions 72F, 72B of the 2 nd ring forming members 7F, 7B abut against the tip portions 62F, 62B of the 1 st ring forming members 6F, 6B as shown in fig. 10 and 12. At this time, the two ring forming members 6F, 6B, 7F, 7B are temporarily elastically displaced in the radial direction guided by the guide inclined surfaces 633F, 633B, 733F, 733B. When an operating force is further applied, the convex strips 631F, 631B, 731F, 731B move to positions corresponding to the concave grooves 632F, 632B, 732F, 732B, and are engaged by an elastic restoring force. More specifically, after the projections 631F, 631B of the engaging portions 63F, 63B of the 1 st ring forming members 6F, 6B are moved to the positions where the recesses 732F, 732B of the engaging portions 73F, 73B of the 2 nd ring forming members 7F, 7B are opposed to the projections 731F, 731B of the engaging portions 73F, 73B of the 2 nd ring forming members 7F, 7B are opposed to the recesses 632F, 632B of the engaging portions 63F, 63B of the 1 st ring forming members 6F, 6B, 7F, 7B, the engaging portions 63F, 63B, 73F, 73B of the 1 st and 2 nd ring forming members 6F, 6B, 7F, 7B are moved in the radial direction and the direction to approach each other by the elastic restoring force, and the 2 nd ring forming members 7F, 7B are brought into the closed posture (C) shown in fig. 5 to 9.

When the 2 nd ring forming members 7F and 7B are pinched in the direction of approaching each other and an operating force is applied to disengage the engaging portions 63F and 63B of the 1 st ring forming members 6F and 6B from the engaging portions 73F and 73B of the 2 nd ring forming members 7F and 7B, the biasing force of the spring 5 is transmitted to the 2 nd ring forming members 7F and 7B via the coupling member 8, and the 2 nd ring forming members 7F and 7B are biased toward the open posture (O). When the 2 nd ring forming members 7F and 7B reach the open posture (O), the intermediate eccentric portion 81 of the connecting member 8 abuts against the ceiling wall 322 of the cavity forming portion 32, further rotation of the 2 nd ring forming members 7F and 7B is restricted, and the 2 nd ring forming members 7F and 7B are held in the open posture (O) by the ceiling wall 322.

As described above, the ring folder RF includes: a folder body 1 having a back cover provided between base ends of a pair of covers 11 and 12, the folder body 1 being capable of assuming a cover open/close state in which the other cover 12 functioning as a front cover can be rotated with respect to a back cover 13 perpendicular to the one cover 11 functioning as a back cover; and a ring-type binding tool 2, wherein the ring-type binding tool 2 has binding rings 4F and 4B provided near a base end 11a of one cover 11 of the folder main body 1.

Here, fig. 15 is an enlarged plan view of a portion of the cover 12 that is provided with the locking hole 123 and the ring binder 2. Fig. 16 is a diagram showing an intended rotation range of the other cover 12, and shows a state in which the other cover 12 is separated from the binder ring 4F by a solid line, and a state in which the rotating end 12d of the other cover 12 is in contact with the one cover 11 by a phantom line. Fig. 17 is a cross-sectional view along the axial center of the binder ring 4F in a state where the cover 12 is separated from the binder ring 4F. Fig. 18 is a cross-sectional view along the axial center of the binding ring 4F in a state where the other cover 12 is parallel to the one cover 11. Fig. 19 is a cross-sectional view along the axial center 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.

As described above, the binder rings 4F and 4B of the ring binder 2 include the 1 st and 2 nd ring forming members 6F, 6B, 7F, and 7B having the tip end portions engaged with each other, but in such a configuration, when an external force for releasing the engagement that biases the two ring forming members 6F, 6B, 7F, and 7B in the direction of approaching each other acts, the engagement is released. That is, in this embodiment, the following configuration is made: the 1 st loop forming members 6F, 6B provided upright on the opposite ridge side (the side opposite to the ridge 13) of the base 1 are fixed to the base 1, and the 2 nd loop forming members 7F, 7B provided upright on the ridge 13 side are rotated to engage with the 1 st loop forming members 6F, 6B, but when an external force for releasing the engagement in the ridge 13 direction acts on the leading end side of the 1 st loop forming members 6F, 6B in this engaged state, the 1 st loop forming members 6F, 6B are elastically deformed, and the engaging portions 63F, 63B thereof pass over the engaging portions 73F, 73B of the 2 nd loop forming members 7F, 7B, and the engagement between the 1 st loop forming members 6F, 6B and the 2 nd loop forming members 7F, 7B is released.

The other cover 12 of the folder body 1 has a lock hole 123 that engages with the binder rings 4F and 4B without applying an external force for releasing engagement to the binder rings 4F and 4B in the middle of the cover opened and closed state.

The locking hole 123 and the ring binder 2 will be described below in connection with each other. In the following description, only the front half of the ring binder 2 and the front lock hole 123 will be described.

As shown in fig. 15, the locking hole 123 includes a slit 123a having a width corresponding to the wire diameter of the binding ring 4F and an elastic deformation portion 123b for reducing the width of a part of the slit 123a, and is configured to be able to insert a part of the binding ring 4F into the slit 123a by temporary elastic deformation of the elastic deformation portion 123 b.

As shown in fig. 9 and 15, the ring-type binding tool 2 includes a base 3 attached to one cover 11, a 1 st ring forming member 6F erected on a portion on the reverse-spine-sealing side (the side opposite to the spine 13) of the base 3, and a 2 nd ring forming member 7F erected on a portion on the spine-sealing 13 side of the base 3 and having an extending portion extending in the reverse-spine-sealing direction (the direction opposite to the spine 13) on the tip side. The ring binder 2 is configured to use the binder rings 4F (4B) in the closed position (C) or the open position (O) by performing the following operation. That is, the ring binder 2 is configured such that the binder ring 4F is brought into the closed posture (C) by applying an operation of bringing the distal end portions 62F and 72F thereof close to each other and engaging the engaging portions 63F and 73F with each other by relatively rotating the 1 st and 2 nd ring forming members 6F and 7F (rotation of the 2 nd ring forming member 7F in the direction opposite to the spine 13). As described above, the ring binder 2 is configured such that the binder rings 4F and 4B are brought into the open posture (O) by an operation of pinching the 2 nd ring forming members 7F and 7B in a direction to approach each other and applying an operation force to release the engagement between the engaging portions 63F and 73F. On the other hand, when an external force in a direction approaching the seal back 13 is applied to the 1 st ring forming member 6F in the engaged state regardless of the intention of the user, the convex strips 631F, 731F and the concave grooves 632F, 732F of the engaging portions 63F, 73F are not orthogonal to the direction of the external force, and the 1 st ring forming member 6F is allowed to be elastically deformed in the direction approaching the seal back 13. Therefore, when the external force reaches a certain magnitude or more, the engagement state between the engagement portion 63F of the 1 st ring forming member 6F and the engagement portion 73F of the 2 nd ring forming member 7F is released.

As shown in fig. 16, the slit 123a of the lock hole 123 is set to a size such that the longitudinal end edge 123x thereof does not substantially contact the 1 st ring forming member 6F in the virtual rotation range R1 of the other cover 12 in the cover open/close state, and the elastic deformation portion 123b of the lock hole 123 contacts and engages with the extension portion 75F of the 2 nd ring forming member 7F.

Specifically, as shown in fig. 17 to 19, the tip end portion 62F of the 1 st loop forming member 6F forms an inclined portion inclined toward the seal ridge 13. In other words, the 1 st loop forming member 6F includes an inclined portion inclined toward the seal ridge 13 on the distal end side. On the other hand, the base end portion 71F of the 2 nd ring forming member 7F is supported by the base portion 3, and the base end portion 71F stands substantially perpendicular to the base portion 3, and an extending portion 75F extends from the standing end thereof toward the 1 st ring forming member 6F. The extension portion 75F includes a base end curved portion 751F, an intermediate straight line portion 752F extending from the base end curved portion 751F in the reverse ridge sealing direction (the direction opposite to the ridge seal 13), and a tip end curved portion 753F curved from the intermediate straight line portion 752F toward the base portion 3 side and abutting against the tip end of the 1 st ring forming member 6F, and the elastic deformation portion 123b of the lock hole 123 engages with the intermediate straight line portion 752F.

Here, as shown in fig. 16, the assumed turning range R1 of the other cover 12 (front cover) means a range from a position where the other cover 12 is separated from the binding ring 4F to a position where the turning end 12d of the other cover 12 is in contact with the one cover 11.

Since the rear half and the rear side lock hole 123 of the ring binder 2 are also formed in a shape symmetrical to the front half and the front side lock hole 123 of the ring binder 2 and have the same configuration, corresponding portions are denoted by reference numerals with the end F being changed to B, and the description thereof is omitted.

With such a configuration, as shown in fig. 1, the pair of covers 11 and 12 and the spine 13 are spread out in a planar manner, whereby the entire surface of the ring binder 2 is exposed. Therefore, by opening and closing the pair of binder rings 4F and 4B of the ring binder 2, the work of attaching and detaching the sheets or the like to and from the ring binder 2 can be performed.

From this expanded state, the spine 13 is erected so as to be orthogonal to one cover 11 (back cover) and the other cover 12 (front cover) is rotated relative to the spine 13, whereby the ring-shaped folder RF can be brought into a closed state.

In this process, the cover open/close state in which the other cover 12 can be turned with respect to the spine 13 orthogonal to the one cover 11 can be assumed, but in the middle of the cover open/close state, as shown in fig. 18, the pair of lock holes 123 provided in the other cover 12 are engaged with the corresponding binder rings 4F, 4B of the binding tool, respectively, and the other cover 12 is held at the closed position substantially parallel to the one cover 11. Specifically, when an operating force in the closing direction is applied to the other cover 12, the extending portions 75F and 75B of the 2 nd loop forming members 7F and 7B of the binder rings 4F and 4B corresponding to the locking holes 123 enter the locking holes 123, and the elastic deformation portions 123B of the locking holes 123 are temporarily deformed to engage with the inner peripheral sides of the intermediate straight portions 752F and 752B of the extending portions 75F and 75B.

When the hand is removed from the other cover 12 in this engaged state, the other cover 12 is held at the closed position substantially parallel to the one cover 11, but when the other cover 12 is further urged in the closing direction from the stage at which the elastic deformation portion 123B of the locking hole 123 engages with the inner peripheral side of the binding rings 4F and 4B, there is a possibility that the binding rings 4F and 4B enter the slit 123a of the locking hole 123 and the other cover 12 rotates until the tip end 12d thereof reaches the one cover 11, as shown by the imaginary line in fig. 16 and fig. 19.

However, in the ring folder RF, as shown in fig. 15 and 17 to 19, the slit 123a of the lock hole 123 is set to a size such that the longitudinal end edge 123x thereof does not come into contact with the 1 st ring forming members 6F and 6B within the assumed rotation range R1 of the other cover 12, and therefore, even if the other cover 12 is excessively closed with an impact, the end of the slit 123a does not come into contact with the 1 st ring forming members 6F and 6B. Therefore, the 1 st ring forming members 6F and 6B are not subjected to an external force for releasing the engagement, and an unexpected situation in which the engagement state of the 1 st ring forming members 6F and 6B and the 2 nd ring forming members 7F and 7B constituting the binder rings 4F and 4B is released against expectation when the other cover 12 is closed can be prevented.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the present invention.

For example, the number of binding rings of the ring binder is not limited to 2, and may be 1 or 3 or more. The binding ring may be configured such that the 1 st and 2 nd ring forming members are rotated in the approaching and separating directions, respectively. However, the problem of the present invention is particularly significant in a binding tool in which binding rings are formed by a 1 st ring forming member fixed to a base and standing straight, and a 2 nd ring forming member having an extension portion extending toward a reverse spine side on a tip side, and therefore, the present invention is applied to this type of ring-type file.

Even when the binding tool of this type is used, the 1 st loop forming member is not limited to one having the inclined portion inclined in the back sealing direction on the leading end side, but a particularly significant effect can be obtained by applying the present invention to a structure having such an inclined portion. That is, when the front cover is further closed in a state where the edge of the slit abuts on the inclined portion, a problem that the 1 st loop forming member is strongly biased in the direction of the back cover by the guiding action of the inclined portion and the binder ring is opened is easily caused.

In addition, in the above-described embodiment, the inclination angle θ of the concave groove and the convex groove provided at the engaging portion of the 1 st and 2 nd ring forming members with respect to the axial center of the tip portion of the ring forming member in the front view is set to 45 °, but as described above, the inclination angle θ may be set arbitrarily (for example, 60 ° or the like) as long as it is a value other than 90 °. In the above-described embodiment, the angle Φ formed by the recessed groove and the projecting groove provided in the 2 nd ring forming member with respect to the rotational locus between the closed posture and the open posture of the engaging portion in the 2 nd ring forming member is 90 °, but the angle Φ may be set arbitrarily (for example, 120 °. In particular, when the inclination angle θ is 60 ° or more and more close to 90 °, or when the angle Φ formed by the concave groove and the convex line with respect to the rotational locus is 120 ° or more and more close to 180 °, the concave groove and the convex line become short, so that the portion restricted by the external force applied to the spine side becomes small, and the engagement and disengagement phenomenon in the state close to the lateral sliding easily occurs.

Also, the extension portion of the 2 nd ring forming member is not limited to the extension portion illustrated in the drawings, and for example, the extension portion may be integrally bent. However, if the extension portion of the 2 nd ring forming member has an intermediate straight line portion in the middle and the elastic deformation portion of the lock hole is engaged with the intermediate straight line portion as in the above-described embodiment, the protruding dimension of the binder ring with respect to the base portion can be reduced as much as possible, and the thickness dimension of the entire ring-shaped file can be reduced without degrading the binding performance.

Further, the size of the slit of the lock hole is preferably set to a value that does not come into contact with the 1 st ring forming member at all in any position within the assumed rotation range of the front cover as in the illustrated example, but the present invention also includes a configuration in which although the end of the slit lightly contacts the ring forming member, it is not possible to strongly apply a force to the ring forming member within the assumed rotation range to such an extent that an external force for releasing engagement is applied thereto.

In addition, various modifications are possible within a range not to impair the gist of the present invention.

Claims (5)

1. A ring-type file is provided with a file body and a ring-type binding tool, wherein the file body is formed by arranging a back cover between the base ends of a pair of covers and can adopt a cover opening and closing state that the other cover can rotate relative to the back cover orthogonal to one cover, the ring-type binding tool is provided with a binding ring arranged near the base end of one cover of the file body,

the binding ring is provided with a 1 st ring forming member and a 2 nd ring forming member which make the top end parts mutually engaged, and is configured to be released when external force for releasing the engagement which biases the two ring forming members in the direction of approaching each other acts,

the other cover has a locking hole which is engaged with the binding ring without applying an external force for releasing engagement to the binding ring in the middle of the cover opening and closing state.

2. A ring file according to claim 1,

the locking hole has a slit having a width corresponding to the diameter of the wire of the binding ring and an elastic deformation portion for reducing the width of a part of the slit,

the ring-shaped folder is configured such that a part of the binding ring can be inserted into the slit by temporary elastic deformation of the elastic deformation portion.

3. The ring file of claim 2,

the ring binder comprises a base part assembled on one cover, a 1 st ring forming member erected on a part on the reverse back cover side of the base part, and a 2 nd ring forming member erected on a part on the back cover side of the base part and having an extending part extending in the reverse back cover direction on the top end side, wherein the top ends of the 1 st ring forming member and the 2 nd ring forming member can be engaged with and disengaged from each other by relative rotation of the 1 st ring forming member and the 2 nd ring forming member,

the slit of the locking hole is set to a size such that the longitudinal end edge of the slit does not substantially contact the 1 st ring forming member within the range of the envisaged rotation of the other cover in the cover open/closed state,

the elastic deformation portion of the locking hole is engaged with the extension portion of the 2 nd ring forming member by contacting the extension portion.

4. A ring file according to claim 3,

the extension portion of the 2 nd loop forming member includes a base end curved portion, an intermediate straight portion extending from the base end curved portion in the reverse ridge direction, and a tip end curved portion curved from the intermediate straight portion toward the base portion side and abutting against the tip end of the 1 st loop forming member, and the elastic deformation portion of the lock hole is engaged with the intermediate straight portion.

5. A ring file according to claim 3 or 4,

the expected turning 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 turning end of the other cover is brought into contact with the one cover.

Images