JP2018034365A - Ring binder and ring file - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ring binder configured so as to secure the length of a portion where a recessed groove of an engaging part of one ring forming member is engaged with a projection of an engaging part of the other ring forming member without a need to maintain high quality management, and a ring file provided with such a ring binder.SOLUTION: This ring binder is constructed by supporting a first ring forming member and a second ring forming member so as to be mutually rotatable, and configured so as to selectively employ an open attitude where engaging parts respectively provided to the tips of the ring forming members are engaged/disengaged with each other to attach/detach a sheet to/from the ring forming members and a closed attitude where the sheet can be bound. The engaging part of one ring forming member is provided with at least a recessed groove. The engaging part of the other ring forming member is provided with a projection to be engaged with at least the recessed groove. The recessed groove and the projection are provided in the manner of tilting at an angle other than a right angle to an axis at the tips of the ring forming members.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a binding tool that is attached to and used on the inner surface side of a file body including a front cover, a back cover, and a back cover.

    As a binding tool of this type, a first ring forming member and a second ring forming member are supported by a base attached to a file body so as to be capable of relative rotation, and are attached to the tip of each ring forming member. The ring-forming member can be selectively engaged in an opening posture in which the paper can be loaded and unloaded, and a closing posture in which the paper can be bound. There are known (see, for example, Patent Document 1).

  By the way, in the conventional binding tool, the engaging part of the one ring forming member is provided with at least a concave groove, and the engaging part of the other ring forming member is engaged with at least the concave groove. The groove and the ridge are formed so as to extend in a direction perpendicular to the axis of the tip of the ring forming member.

  Therefore, the length dimension of the concave groove and the convex stripe depends on the diameter of the ring forming member, and if the entire binding tool is not made with a relatively high accuracy, the concave groove and the convex groove are formed. , That is, the dimension in the direction perpendicular to the axis of the portion where the concave groove and the convex stripe mesh with each other tends to be insufficient. As a result, maintaining high quality control is indispensable for commercialization.

  Such a problem also exists in the case where the base is not attached to the file main body, and some improvement is desired.

JP 2011-251428 A

  The present invention can secure the length of the portion where the concave groove of the engaging portion of one ring forming member is engaged with the convex line of the engaging portion of the other ring forming member without maintaining high quality control. It is an object of the present invention to provide a ring binding having a structure, and a ring file including such a ring binding.

  That is, the present invention has the following configuration.

  The ring and binding tool according to claim 1 is configured such that a first ring forming member and a second ring forming member are supported by a base so as to be capable of relative rotation, and are respectively provided at the distal ends of the ring forming members. A ring binding tool configured to selectively take an opening posture in which the ring forming member can disengage and disengage the paper and a closing posture in which the paper can be bound by engaging and disengaging the engaging portions. The engaging portion of the one ring forming member includes at least a concave groove, and the engaging portion of the other ring forming member includes at least a ridge that engages with the concave groove. The groove and the ridge are provided so as to be inclined so as to form an angle other than a right angle with respect to an axis at a tip portion of the ring forming member.

  According to a second aspect of the present invention, in the configuration according to the first aspect, a binding ring for binding sheets is formed by the first ring forming member and the second ring forming member. There is a pair of the binding rings on the base.

  The ring binding tool according to claim 3 is the configuration according to claim 2, wherein the first ring forming member has a base end fixed to the base, and the second ring forming member is A base end portion is rotatably supported by a bearing provided on the base.

  A ring binding tool according to a fourth aspect of the present invention is the configuration according to the third aspect, wherein the concave groove or the ridge provided in the second ring forming member is engaged with the second ring forming member. It is provided so as to be orthogonal to the rotation trajectory of the part.

  According to a fifth aspect of the present invention, in the configuration according to the first, second, third, or fourth aspect, the ends of the first and second ring forming members are rounded.

  According to a sixth aspect of the present invention, there is provided the ring binding tool according to the first, second, third, fourth or fifth aspect, wherein the first ring forming member is fixed to one side edge of the base. The second ring forming member is pivotally supported on the other side edge of the base and the tip side is curved, and the engaging portion of the first ring forming member and the second ring forming member are The engaging portion is configured to engage at a position deviated from the center in the width direction of the base.

  The ring file according to claim 7 is attached to a file main body in which a back cover is provided between the base ends of a pair of cover sheets, and an inner surface in the vicinity of the base end of one cover of the file main body. A ring binding tool, the one side edge of the base of the ring binding tool is located on the side away from the back cover of the file body, and the other side edge of the base is the cover of the file body. It is located near the boundary with the spine.

  According to the present invention, the length of the portion where the concave groove of the engaging portion of one ring forming member and the convex line of the engaging portion of the other ring forming member mesh with each other without maintaining high quality control. It is possible to provide a ring and jig having a configuration that can be secured, and a ring file including such a ring and jig.

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 a ring file according to the embodiment FIG. The top view which shows the ring binding tool which concerns on the embodiment. Front view showing a ring and a binding tool according to the embodiment BB sectional drawing in FIG. CC sectional drawing in FIG. X arrow line view in FIG. Action | operation explanatory drawing of the ring and binding tool which concerns on the same embodiment. Sectional drawing for an effect | action description of the ring and binding tool which concerns on the same embodiment. The figure which expands and shows the principal part in FIG. Action | operation explanatory drawing of the ring and binding tool which concerns on the same embodiment. Sectional drawing for an effect | action description of the ring and binding tool which concerns on the same embodiment. D arrow line view in FIG. E arrow line view in FIG. F arrow line view in FIG. G arrow line view in FIG. H arrow line view in FIG. The arrow I view in FIG. The front view which shows the 2nd binding ring formation member and connection member which concern on other embodiment of this invention.

  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 file that can realize usability according to a so-called lever arch file. The ring file RF includes, as shown in FIGS. 1 to 4, a file main body 1 in which a spine cover 13 is provided between base ends 11 a and 12 a of a pair of cover covers 11 and 12, and one of the file main bodies 1. It comprises a ring and a binding tool 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 a base end 11a of one cover 11 that functions as a back cover and a base end 12a of the other cover 12 that functions as a front cover. A cover 13 is provided, and a main fold line portion 11 b is provided at the boundary between the cover 11 and the spine 13. The one cover 11 includes 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 11 c is formed at the boundary with the paper corresponding area 112. The other cover 12 includes a binding ring holding area 121 set near the base end 12 a and a paper corresponding area 122 adjacent to the binding ring holding area 121. In the binding ring holding area 121, a slit 121a for holding free ends of the binding rings 4F and 4B, which will be described later, is formed. At the boundary between the binding ring holding area 121 and the paper corresponding area 122, A sub-bending line portion 12c is formed. A finger hook hole 13 a is formed in the spine cover 13.

  Note that this file is assumed to be a paper replacement operation with the lower side in FIG. 2 as the front, and hereinafter, in this specification, the lower side in FIG. It is called “the back side”.

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

  Here, FIG. 5 is a plan view showing the ring and binding tool 2 in a partially broken view, and FIG. 6 is a front view of the ring and binding tool 2. 7 and 8 are sectional views taken along lines BB and CC in FIG. 5, respectively. FIG. 9 is an enlarged view of the main part in FIG. FIG. 10 is an operation explanatory view for explaining the operation of second 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. FIG. 12 is an enlarged view showing a main part in FIG. FIG. 13 is a front view showing a state in which second ring forming members 7F and 7B described later are in an open posture (O) described later, and FIG. 14 is a cross-sectional view corresponding to FIG. 7 in the state shown in FIG. FIG. 15, FIG. 16 and FIG. 17 are respectively a D arrow view, an E arrow view, and an F arrow view in which the main part in FIG. 13 is enlarged. 18, 19, and 20 are respectively a G arrow view, an H arrow view, and an I arrow view in which the main part in FIG. 13 is enlarged.

  As shown in FIGS. 6, 10 and 13, the binding rings 4F and 4B are supported by base portions 61F and 61B on the base 3 and first engaging portions 63F and 63B on the tip portions 62F and 62B. The first ring forming members 6F, 6B having the base end portions 71F, 71B are supported by the base 3 and the second engaging portions 73F, 73B are provided at the distal end portions 72F, 72B. When the engagement portions 73F and 73B are engaged with the first engagement portions 63F and 63B from the closed posture (C) as shown in FIG. ), And the second ring forming members 7F and 7B that can be rotated. The second ring forming members 7F and 7B are urged in the opening direction by the spring 5. In addition, in this specification, the code | symbol 4F is attached | subjected to the near side binding ring, and the code | symbol 4B is attached | subjected to the back side binding ring. In addition, in principle, each element constituting the binding ring 4F on the front side is given a symbol with F added to the end, and B is also added to the elements constituting the binding ring 4B on the back side in principle. The code is attached. And in each element which comprises the near side and back side binding rings 4F and 4B, the corresponding name is attached | subjected to the corresponding thing, and the same code | symbol except F or B of the end is attached | subjected.

  More specifically, the engaging portion of one ring forming member of each binding ring 4F, 4B is provided with at least a concave groove, and the engaging portion of the other ring forming member is at least in the concave groove. It has protruding ridges to engage. In this embodiment, as shown in FIGS. 9 and 12, the protrusions 631F are formed on the engaging portions 63F, 63B, 73F, 73B of the first and second ring forming members 6F, 6B, 7F, 7B. 631B, 731F, and 731B, and concave grooves 632F, 632B, 732F, and 732B adjacent to the protrusions 631F, 631B, 731F, and 731B in parallel. In addition, the engaging portions 63F and 63B of the first ring forming members 6F and 6B have the protrusions 731F and 731B of the engaging portions 73F and 73B of the second ring forming members 7F and 7B in the concave grooves 632F and 632B of the second ring forming members 6F and 63B. The engaging portions 73F and 73B of the second ring forming members 7F and 7B engage with the concave grooves 732F and 732B of the second ring forming members 7F and 7B, and the protruding portions 631F and 631B of the engaging portions 63F and 63B of the first ring forming members 6F and 6B. Can be engaged.

  The concave grooves 632F, 632B, 732F, 732B and the convex strips 631F, 631B, 731F, 731B are axial centers L1F, L1B at the tip portions 61F, 61B, 71F, 71B of the ring forming members 6F, 6B, 7F, 7B. , L2F, and L2B are provided to be inclined so as to form an angle other than a right angle. Specifically, as shown in FIG. 12, the concave grooves 632F and 632B and the convex strips 631F and 631B provided in the engaging portions 63F and 63B of the first link forming members 6F and 6B are Inclined by an angle θ, for example, in a front view with respect to the axial centers L1F and L1B at the end portions 62F and 62B of the ring forming members 6F and 6B, and engaging portions 73F and 73B of the second link forming members 7F and 7B. The concave grooves 732F and 732B and the ridges 731F and 731B provided in the upper surface of the second ring forming member 7F and 7B are inclined by an angle θ with respect to the axial centers L2F and L2B at the distal ends 72F and 72B of the second ring forming members 7F and 7B I'm allowed. In this embodiment, the inclination angle θ is set to 45 ° in this embodiment, but various selections and adoptions are possible as long as the value is other than 90 °. Further, as shown in FIG. 12, the concave grooves 732F and 732B and the convex strips 731F and 731B provided in the second ring forming members 7F and 7B are formed in the second ring forming members 7F and 7B. The rotation trajectories L3F and L3B between the closing posture (C) and the opening posture (O) of the engaging portions 73F and 73B (more precisely, the rotation trajectories L3F and L3B are the concave grooves 732F and 732B and It is set so as to form an angle φ with respect to the tangent lines L31F and L31B) at the locations where the ridges 731F and 731B intersect. The angle φ is set to 90 ° in the present embodiment, but can be variously changed as long as the value is close to 90 °.

  Further, as shown in FIGS. 9 and 15 to 17, the concave groove 632F of the engaging portion 63F of the first ring forming member 6F on the near side is a linear groove opened toward the back side. The concave groove 632B of the engaging portion 63B of the first ring forming member 6B on the back side is a linear groove opened toward the front side. Further, as shown in FIGS. 9 and 18 to 20, the concave groove 732 </ b> F of the engaging portion 73 </ b> F of the second ring forming member 7 </ b> F on the near side is a linear groove opened toward the near side. The concave groove 732B of the engagement portion 73B of the second ring forming member 7B on the back side is a linear groove opened toward the back side. That is, the concave grooves 632F and 632B of the engaging portions 63F and 63B of the first ring forming members 6F and 6B forming a pair are opened in a direction facing each other, and the second ring forming members 7F and 7B forming the pair are opened. The concave grooves 732F and 732B of the engaging portions 73F and 73B are opened in directions away from each other. Each convex strip 631F, 631B, 731F, 731B is provided adjacent to the tip side of the corresponding concave groove 632F, 632B, 732F, 732B, and is a pair of first ring forming members 6F, 6B. The protruding portions 631F and 631B of the engaging portions 63F and 63B of the engaging portions 63F and 63B protrude in a direction facing each other, and the engaging portions 73F and 73B of the paired second ring forming members 7F and 7B are separated from each other. It protrudes 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 distal end side of the convex strips 631F, 631B, 731F, and 731B, The two ring forming members 6F, 6B, 7F, and 7B are brought into contact with each other by abutting the front ends 62F and 62B of the first ring forming members 6F and 6B with the front ends 72F and 72B of the second ring forming members 7F and 7B. Is temporarily elastically displaced in the radial direction, and the convex ridges 631F, 631B, 731F, 731B are engaged with the corresponding concave grooves 632F, 632B, 732F, 732B. In FIG. 12, a guide inclined surface 633F is a portion provided with a pattern. In order to release the engagement, the ring forming members 7F and 7B may be temporarily elastically deformed in the radial direction by pinching the leading ends of the second ring forming members 7F and 7B together.

  The first ring forming members 6F and 6B described above are substantially linear fixed to one side edge 3a of the base 3, and the second ring forming members 7F and 7B are formed on the base 3. It is pivotally supported by the other side edge 3b and the tip side is curved. Therefore, the engaging portions 63F and 63B of the first ring forming members 6F and 6B and the engaging portions 73F and 73B of the second ring forming members 7F and 7B are separated from the center in the width direction of the base 3. It is configured to engage in position. More specifically, as shown in FIG. 5, the base end portions 61F and 61B of the first ring forming members 6F and 6B are inserted 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 and 7B are provided with shaft portions 711F and 711B at the base end portions 71F and 71B, and the shaft portions 711F and 711B are formed on the base. 3 are inserted into cavities SP formed between a cavity forming portion 32 (described later) and the file body 1, and are respectively supported by bearings 33 (described later) of the base 3. Note that 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 back side are aligned with each other in the posture in which the tips are opposed to each other. Are supported by each. The ends of the shaft portions 711F and 711B are coupled to each other by a connecting member 8 having an intermediate eccentric portion 81 that is eccentric with respect to the shaft portions 711F and 711B. The second ring forming members 7F and 7B and the connecting member 8 are integrally formed products made of a metal wire.

  As shown in FIGS. 9 and 15 to 20, the tips 64F, 64B, 74F, and 74B of the first and second ring forming members 6F, 6B, 7F, and 7B are rounded. The roundness 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 the binding rings 4F, 4B. This is to enable the paper P bound along the binding rings 4F and 4B to be smoothly moved.

  As shown in FIGS. 1 to 2, 5 to 8, 10 to 11, and 13 to 14, the base 3 includes a base body 31 attached to the file body 1 and the base body 31. And the cavity forming portion 32 integrally formed on one side edge.

  The base body 31 has a flat shape with a mounting flange 311 attached to the file body 1 through a fastening tool S such as a rivet in contact with the file body 1 at the periphery, and is attached to both front and rear ends. A hole 31a is provided, and the base end portions 61F and 61B of the first ring forming members 6F and 6B are fixed to the ring mounting hole 31a, respectively.

  The cavity forming portion 32 forms a cavity SP between the file body 1 and the file body 1 while being attached to the file body 1. Inside the cavity forming portion 32 facing the cavity SP, a bearing 33 that pivotally supports the base end portions 71F and 71B of the second ring forming members 7F and 7B, and the spring disposed in the cavity SP. A spring receiver 34 for supporting one end of 5 is provided.

  More specifically, as shown in FIGS. 6 to 8, 10 to 11, and 13 to 14, the cavity forming portion 32 includes an upstanding wall 321 that rises from one side edge of the base body 31, and the upright wall 321. The top wall 322 extends from the upper end of the wall 321 while gradually decreasing from the upper end to the outer side, and the descending wall 323 descending from the extending end of the top wall 322. The bearings 33 are formed at both ends of the edge, and the spring receivers 34 are formed at the middle part of the lower edge of the descending wall 323.

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

  As shown in FIGS. 7, 11, and 14, the spring receiver 34 is a flat plate disposed between the bearings 33 and disposed at the bottom portion of the cavity SP, below the lowering wall 323. It extends from the edge 323a in a cantilever state. The spring receiver 34 has a quadrangular shape in plan view, and is provided with a slit 34b for positioning the spring 4 in the vicinity of the extended end 34a.

  The base 3 described above is one in which the base body 31, the cavity forming portion 32, the bearing 33, and the spring receiver 34 are integrally formed by pressing a common sheet metal material. That is, the base 3 is an integrally molded product made of sheet metal.

  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 on the side away from the spine 13 of the file body 1. The other side edge 3 b of the base 3, specifically, the edge on the cavity forming part 32 side, is located near the boundary between the cover 11 and the back cover 13 of the file body 1.

  The spring 5 is for urging the second ring forming members 7F and 7B in the direction toward the open posture (O), and is between the spring receiver 34 and the intermediate eccentric portion 81 of the connecting member 8. Is interposed. That is, as shown in FIGS. 7, 11 and 14, the spring 5 elastically biases the intermediate eccentric portion 8 from below with a stationary portion 51 installed on the spring receiver 34 and a tip portion 521. The movable part 52 is a leaf spring and integrally includes a movable connecting part 52 and a curved connecting part 53 that continuously connects the movable part 52 and the stationary part 51.

  The stationary portion 51 has a flat plate shape including a tip bent portion 511 engaged with the extended end 34 a of the spring receiver 34 and an intermediate bent portion 512 engaged with the slit 34 b of the spring receiver 34.

  The movable part 52 has a partial cylindrical shape with the tip end portion 521 opening upward, and the tip end portion 521 can hold and urge the intermediate eccentric portion 81 of the connecting member 8. It is. By the action of the spring 5, the second ring forming members 7F and 7B are rotated to the open posture (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 second ring forming member is engaged by the locking action by the top wall 322. 7F and 7B are held in the open posture (O). That is, the cavity SP is shaped to allow the operation of the connecting member 8 when the second ring forming members 7F and 7B rotate between the closed posture (C) and the open posture (O). Specifically, it is formed so as to have a fan shape when viewed from the front.

  The ring file of this embodiment is for binding, for example, A4 size paper, and the distance d between the front and back binding rings 4F, 4B corresponds to the punching pitch of a general two-hole file. Is set to a value. Then, the position of the cavity forming portion 32 is set so that the edge Pa on the binding origin side of the paper P bound to 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. It is set.

  Subsequently, the behavior of each part when the second 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 operation force in the direction toward the closed position (C) is applied to the second ring forming members 7F and 7B in the open position (O) as shown in FIGS. 13 and 14, the spring 5 as shown in FIG. Is elastically deformed by receiving the transmission of the operating force through the intermediate eccentric portion 81 of the connecting member 8, and as shown in FIGS. 10 and 12, the end portions 72F and 72B of the second ring forming members 7F and 7B Hits the front ends 62F and 62B of the first ring forming members 6F and 6B. At this time, the ring forming members 6F, 6B, 7F and 7B are guided by the guide inclined surfaces 633F, 633B, 733F and 733B and temporarily elastically displaced in the radial direction. When an operating force is further applied, the convex ridges 631F, 631B, 731F, and 731B move to positions corresponding to the corresponding concave grooves 632F, 632B, 732F, and 732B, respectively, and are engaged by an elastic return force. More specifically, the engaging portions 63F, 63B of the first ring forming members 6F, 6B are convex ridges 631F, 631B, and the engaging portions 73F, 73B of the second ring forming members 7F, 7B are recessed grooves 732F, 732B, and the engaging portions 73F and 73B of the second ring forming members 7F and 7B are the protruding strips 731F and 731B of the engaging portions 63F and 63B of the first ring forming members 6F and 6B. After moving to a position opposite to 632B, the engaging portions 63F, 63B, 73F, 73B of the first and second ring forming members 6F, 6B, 7F, 7B are moved in the radial direction and in the direction in which they approach each other by elastic return force. The second ring forming members 7F and 7B are moved to a closed posture (C) as shown in FIGS.

  The operating force is applied by pinching the second ring forming members 7F and 7B in the direction of close contact, and the engaging portions 63F and 63B of the first ring forming members 6F and 6B are engaged with the second ring forming members 7F and 7B. When the engagement with the portions 73F and 73B is released, the urging force of the spring 5 is transmitted to the second ring forming members 7F and 7B through the connecting member 8, whereby the second ring forming members 7F and 7B are transmitted. 7B is urged toward the open posture (O). 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 and 7B is restricted, and the second ring forming members 7F and 7B are held in the open posture (O) by the top wall 322.

  According to the configuration of the present embodiment as described above, the concave portions 632F, 632B, 732F, 732B and the convex strip 631F of the engaging portions 63F, 63B, 73F, 73B of the ring forming members 6F, 6B, 7F, 7B are provided. , 631B, 731F, 731B are formed at an angle θ other than a right angle with respect to the axial centers L1F, L1B, L2F, L2B at the tip portions 62F, 62B, 72F, 72B of the ring forming members 6F, 6B, 7F, 7B. The first ring forming members 6F and 6B and the second ring forming member 7F are not required to be precisely formed when forming the ring forming members 6F, 6B, 7F and 7B. , 7B can be secured longer. Therefore, the strength of engagement between the first ring forming members 6F and 6B and the second ring forming members 7F and 7B can be ensured with a simple configuration. Accordingly, the first and second ring forming members 6F, 6B, 7F, and 7B are rounded at the tips 64F, 64B, 74F, and 74B while ensuring the strength of the engagement, and the binding rings 4F and 4B are rounded. In order to prevent the paper P from being caught when the paper P is moved along the guide P, the guide inclined surfaces 633F, 633B, 733F, and 733B are provided in a wider region on the tip side of the ridges 631F, 631B, 731F, and 731B. It is possible to smoothly perform the operation of engaging the first ring forming members 6F and 6B with the second ring forming members 7F and 7B. In particular, in this embodiment, the grooves 632F, 632B, 732F, 732B and the ridges 631F, 631B, 731F, 731B are formed at an angle θ other than a right angle with the axis L1F, L1B, L2F, L2B. Since the first and second ring forming members 6F, 6B, 7F, and 7B are provided with an inclination, even if the tips 64F, 64B, 74F, and 74B are rounded, the guide inclined surfaces 633F, 633B, and 733F are provided. , 733B and ridges 631F, 631B, 731F, 731B can be prevented from becoming unduly small.

  Further, the concave grooves 732F and 732B and the convex strips 731F and 731B of the engaging portions 73F and 73B of the second ring forming members 7F and 7B are orthogonal to the rotation trajectories L3F and L3B of the engaging portions 73F and 73B. Therefore, the grooves 732F and 732B and the ridges 731F and 731B can be smoothly engaged with the ridges 631F and 631B and the grooves 632F and 632B of the first ring forming members 6F and 6B, respectively. it can.

  Furthermore, according to the configuration of the present embodiment, the following effects can be obtained.

  That is, the base 3 is provided with a cavity forming portion 32 that forms a cavity SP with the file body 1 in a state of being attached to the file body 1, and the inside of the cavity forming portion 32 facing the cavity SP. Further, a bearing 33 that pivotally supports base end portions 71F and 71B of the second ring forming members 7F and 7B and a spring receiver 34 that supports one end of the spring 5 disposed in the cavity SP are provided. Therefore, it is possible to store a portion such as the bearing 33 and the spring receiver 34 in the cavity SP between the base 3 and the file body 1 without adding a special cover member, and to hide a complicated portion.

  Compared with the binding tool used in the lever-type arch file, the first ring forming members 6F and 6B which are the ring forming members on the side away from the spine cover 13 can be brought closer to the spine cover 13 side. The width dimension of 2 can be reduced without difficulty, and as a result, the width dimension of the file body 1 can be reduced without difficulty.

  Unlike the binding tool used in the lever-type arch file, an operation lever for receiving an operation force for rotating the second ring forming members 7F and 7B to the closed position (C) against the urging force of the spring 5 is provided. Therefore, the removal operation of the paper P bound by any of the first and second ring forming members 6F, 6B, 7F, and 7B can be smoothly performed with the file body 1 opened.

  Since the leaf spring-like spring 5 having the stationary portion 51 and the movable portion 52 is interposed between the spring receiver 34 and the intermediate eccentric portion 81 of the connecting member 8, a compression coil spring is provided. In the case where the retainer or the torsion coil spring is provided, the second ring forming members 7F and 7B are opened with a small installation space and a small number of parts without providing a shaft member for winding the torsion coil spring. The structure for energizing to the side can be realized.

  The cavity forming portion 32 is provided only in the region on the side of the other side edge 3b of the base 3, that is, on the side close to the spine 13 of the file body 1, and Since the entire region of the region on the side away from 13 forms a flat base body 31, the above-described configuration and the effects related to the configuration can be realized without reducing the amount of paper P that can be bound. Can do.

  A cavity SP formed between the cavity forming portion 32 and the file main body 1 is formed in a fan shape when viewed from the front, and the operation of the connecting member 8 is allowed inside the cavity SP. The top wall 322 of the cavity forming portion 32 can function as a stopper that restricts the second ring forming members 7F and 7B from rotating further from the closed position (C) to the open position (O). it can. Therefore, the rotation range of the second ring forming members 7F and 7B can be set without providing a special stopper member.

  In the embodiment described above, the second ring forming members 7F and 7B of the front side and back side binding rings 4F and 4B have a shape overlapping in front view for the sake of clarity of illustration and description. As shown in FIG. 21, in the state where the closed position (C) is not reached, the distal end portion 72B of the second ring forming member 7B of the back side binding ring 4B is the second side of the front side binding ring 4F. The shapes of the second ring forming members 7F and 7B are set so as to precede the closed posture (C) side by a minute angle ψ compared to the front end portion 72F of the ring forming member 7F. The minute angle ψ can be obtained by applying the operation of closing the first and second ring forming members 6F and 7F on the near side to the closed posture (C), and the first and second ring forming members 6B and 7B on the back side. The ring-forming members 7F and 7B and the connecting member 8 are bent and torsionally rigid, or the first and second ring-forming members 6F, 6B, 7F and 7B. The ring forming member is appropriately set in consideration of the drag received by the ring forming member. In this embodiment, the angle is set to about 3 °, but can be set to an appropriate value.

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

  For example, the grooves and ridges of the engaging portion of the ring forming member are not limited to linear ones, and may be curved shapes such as arcs or other shapes as long as the forming direction can be specified. Good.

  Furthermore, the present invention is not limited to an arch file type file in which a binding tool is provided at the base end portion of the cover of the file body, and may be applied to a file having a mode in which a binding tool is provided on the back cover of the file body.

  In addition, in the above-described embodiment, the binding tool provided with a pair of binding rings is described. However, the present invention is applied to a binding tool provided with three or more binding rings or a binding tool provided with only one binding ring. Of course you can.

  In addition, the base end portion of the first ring forming member is fixed to the base, and the base end portion of the second ring forming member is rotatably supported by a bearing provided on the base. Of course, the present invention may be applied to a ring binding tool in which the base end portions of the first and second ring forming members are rotatably supported by bearings provided on the base.

  Furthermore, it goes without saying that the present invention may be applied to a ring binding tool in which the tips of the first and second ring forming members are not rounded.

  And it is not limited to the ring binding tool attached to the file body, but functions as a ring binding tool and a base in which the base end portions of the first and second ring forming members are rotatably supported by a shaft member functioning as a base. The present invention is applied to a ring binding tool in which a base end portion of a first ring forming member is fixed to a shaft member to be supported, and a base end portion of a second ring forming member is rotatably supported by the shaft member. May be.

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

2 ... Ring binding tool 3 ... Base 5 ... Spring 6F, 6B ... 1st ring formation member 62F, 62B ... Tip part L1F, L1B ... Shaft center 63F, 63B ... Engagement part 631F, 631B ... Projection 632F, 632B ... Groove 7F, 7B ... Second ring forming member 72F, 72B ... Tip L2F, L2B ... Center axis 73F, 73B ... Engagement portion 731F, 731B ... Projection 732F, 732B ... Groove

Claims (7)

The first ring forming member and the second ring forming member are supported by the base so as to be rotatable relative to each other, and the engaging portions respectively provided at the tip portions of the ring forming members are engaged with and disengaged from each other. A ring binding tool configured to allow the ring forming member to selectively adopt an opening posture capable of loading and unloading paper and a closing posture capable of binding paper;
The engaging portion of the one ring forming member is provided with at least a concave groove, and the engaging portion of the other ring forming member is provided with a protrusion that engages with at least the concave groove. A ring binding tool, wherein the concave groove and the convex strip are provided so as to be inclined so as to form an angle other than a right angle with respect to an axis at a tip portion of the ring forming member.   The binding ring for binding sheets is formed by the first ring forming member and the second ring forming member, and a pair of the binding rings are provided on the base. Rings and bindings.   The first ring forming member has a base end fixed to the base, and the second ring forming member supports the base end rotatably on a bearing provided on the base. The ring and binding tool according to claim 2 which is a thing.   The said recessed groove or the said protruding item | line provided in the said 2nd ring formation member is provided so that it may orthogonally cross to the rotation locus | trajectory of the said engaging part in the said 2nd ring formation member. Ring binding. The ring binding tool according to claim 1, 2, 3 or 4, wherein the first and second ring forming members have rounded ends. The first ring forming member is a substantially linear member fixed to one side edge of the base, and the second ring forming member is pivotally supported by the other side edge of the base and the tip side is curved. The engaging portion of the first ring forming member and the engaging portion of the second ring forming member are configured to engage at a position deviating from the center in the width direction of the base. A ring and binding tool according to 1, 2, 3, 4 or 5.   A file main body comprising a back cover between the base ends of a pair of cover sheets, and the ring and binding tool according to claim 6 attached to the inner surface of the base end vicinity of one cover of the file main body. The one side edge of the base of the ring and binding tool is located on the side away from the back cover of the file body, and the other side edge of the base is located near the boundary between the cover and back cover of the file body. Ring file.

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