JP6516275B1 - Binding tool - Google Patents

Abstract

To provide a binding tool capable of easily performing an operation of arranging a shaft member between ring support members in manufacturing a binding tool.
Two ring support members (2a, 2b) adjacent to each other, each having a pair of ring portions (4a, 4b) and a bearing portion formed, and each ring support member along the longitudinal direction of the ring support member A fastener having a shaft member 3 disposed through the bearing portion and connecting the two ring support members to each other, the ring including the inside of the bearing portion between the two ring support members. An insertion guide passage 6 is provided which has a shaft disposition space As extending in the longitudinal direction of the support member and which is eccentric to the central axis of the shaft disposition space As on at least one end side of the ring support member.
[Selected figure] Figure 8

Description

  In the present invention, a binding member capable of opening and closing a pair of ring portions formed on each ring support member by rotational displacement of two ring support members around a shaft member, such as loose leaf paper and other paper sheets The present invention relates to a binding tool suitable for use in the binding of paper, and in particular, proposes a technique capable of realizing easy production of such a binding tool.

In this type of binding tool, a shaft portion made of metal or the like as a separate member is passed through a bearing portion formed on each of two ring support members, and the ring support member is rotationally displaced around the shaft member By doing this, the ring portion of the ring support member is opened and closed. Thereby, in the closed position in which the ring portion is formed by bringing the tip of the ring portion close to each other, the sheet can be stapled, while in the open position in which the tip of the ring portion is separated, the sheet is removed be able to.
As such a binding tool, there are conventional ones described in Patent Documents 1 to 6 and the like.

Patent No. 5698320 gazette Patent No. 5797685 gazette Patent No. 5226146 gazette Patent No. 4954301 Patent No. 5049984 Patent No. 5049985 gazette

  By the way, according to the above-described binding tool having a shaft member, although smooth rotational displacement of the ring support member and smooth open / close operation of the ring portion can be performed, when the ring support member is manufactured, It is necessary to pass another shaft member through the bearing portion of the ring support member and place it there.

Here, from the viewpoint of preventing the shaft member from coming off from the end of the ring support member during use, the arrangement space of the shaft member between the two ring support members is linear to the end of the ring support member It is not desirable to have a shape that penetrates.
On the other hand, in consideration of this, in the case where a wall or the like for retaining the shaft member is provided on the end of the ring support member on the extension of the arrangement space of the shaft member, the end of the ring support member is manufactured. In order to insert the shaft member from the side, it is necessary to allow the shaft member to enter the disposition space from a direction oblique to the longitudinal direction of the ring support member while bending and deforming and passing it through the bearing portion of the ring support member .

  In this case, depending on the shape of the ring support member, the material of the shaft member made of metal or the like, the strength or diameter, and other conditions, there is a problem that the operation of arranging the shaft member in the arrangement space between the ring support members is difficult. there were.

  An object of the present invention is to address such a problem, and an object of the present invention is to support a shaft member at the time of manufacturing a predetermined binding tool having a ring support member and a shaft member. An object of the present invention is to provide a binding tool capable of easily performing an operation of arranging between members.

In the binding tool of the present invention, two ring support members adjacent to each other, each having a pair of ring portion and bearing portion formed thereon, and the bearing portion of each ring support member along the longitudinal direction of the ring support member And a shaft member disposed between the two ring support members for connecting the two ring support members together, and by rotational displacement of the ring support members around the shaft members, the ring portion is paired with the ring Two said rings being movable between a closed position in which the respective tips of the parts are close to one another forming a ring shape and an open position in which the respective said tips are separated from one another Between the support members, there is a longitudinally extending shaft-arranging space of the ring support member, including the inside of the bearing portion, on at least one end side of the ring support member, Serial provided insertion guide passage eccentrically from the central axis of the shaft arrangement space Rutotomoni, said shaft arrangement space, the end portion side of the ring support member, said shaft than elsewhere the shaft accommodation space It has an enlarged space portion expanding in a direction away from the central axis of the arrangement space, and a part of the expanded space portion is partitioned as the insertion guide passage, and the insertion guide passage is relative to the central axis of the shaft arrangement space. It has an inclined guide surface .

  Here, it is preferable that the insertion guide passage is at least partially offset from the central axis of the shaft disposition space in the width direction of two adjacent ring support members.

In the binding tool of the present invention, the insertion guide passage may reach an end of the ring support member.
In this case, the end portion of the ring support member may be an enlarged end portion whose outer periphery is enlarged compared to other portions, and the enlarged end portion has a shaft insertion hole to which the insertion guide passage is connected. It is preferable to be provided.

It is preferable that the shaft insertion hole of the enlarged end portion is offset from the central axis of the shaft disposition space in a direction different from the eccentric direction of the insertion guide passage.
In particular, here, the insertion guide passage is eccentric to one side in the width direction of two ring support members adjacent to each other with respect to the central axis of the shaft disposition space, and the shaft insertion hole is in the width direction. It is more preferable that the other side be offset.

  It is preferable that a retaining wall portion for accommodating the shaft member in the shaft disposition space is provided at a position of the enlarged end portion where the shaft disposition space is extended.

The shaft insertion hole may be present inside the outer peripheral surface of the enlarged end.
Alternatively, the shaft insertion hole may be opened on the outer peripheral surface of the enlarged end.

  In the binding tool as described above, the shaft member is preferably a metal rod having a diameter of 1 mm or more.

  By the way, each ring support member has a frame portion including a flat side surface connected to the base of the ring portion and a flat surface on the side on which the ring shape is formed by the pair of ring portions. Preferably, the bearing portion is accommodated inside the frame portion.

  In this case, the frame portion projects to the back side and the back side more than the bearing portion, and the ring portion moves closer to the open position from the closed position and comes close to each other, and comes into contact with the open position. It is preferable to have.

  In the binding tool of the present invention, the two ring support members are relatively movable in the longitudinal direction, and further include a coil spring for biasing the two ring support members in the longitudinal direction. be able to.

  In the binding tool according to the present invention, the shaft member is provided with an insertion guide passage eccentric to the central axis of the shaft disposition space between the ring support members on at least one end side of the ring support member. When entering from the part side toward the shaft disposition space, it is possible to reach the shaft disposition space while deforming the shaft member and escaping to the above-mentioned eccentric insertion guide passage. As a result, the work of arranging the shaft member between the ring support members can be easily performed.

It is a perspective view showing the binding tool of one embodiment of this invention in the state where a ring part is in a closed position. It is a perspective view which shows the binding tool of FIG. 1 in the state which has a ring part in an open position. It is a side view of the binding tool of FIG. It is a cross-sectional view which follows the IV-IV line of FIG. It is a cross-sectional view which follows the VV line | wire of FIG. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 3 and a similar cross-sectional view showing the ring portion in the open position. It is a longitudinal cross-sectional view parallel to the width direction containing the central axis of the shaft arrangement | positioning space which shows the principal part by the side of the edge part of the binding tool of FIG. It is a longitudinal cross-sectional view similar to FIG. 7 which each shows the state in the middle of an assembly of the binding tool of FIG. It is a bottom view of the binding tool of FIG. They are a longitudinal cross-sectional view parallel to the width direction containing the central axis of shaft arrangement space, and a bottom view showing the modification of the end of a ring support member. It is a perspective view which shows a part of each longitudinal direction of the ring support member which the binding tool of FIG. 1 has. It is a fragmentary longitudinal cross-section which passes along this slide convex part which shows operation | movement by the slide convex part which the ring support member of the binding tool of FIG. 1 has. It is a partial rear view of the binding tool of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The binding tool 1 illustrated in FIGS. 1 to 3 can be understood from the long ring supporting members 2a and 2b adjacent to each other in a direction parallel to each other in one direction and shown in FIGS. And a straight round bar or other rod-like shaft member 3 disposed between the ring support members 2a and 2b.

Here, in each of the ring support members 2a and 2b, substantially semi-circular ring portions 4a and 4b that are curved and extend from the side surface Ss to the surface Sf side have predetermined intervals in the longitudinal direction. And multiple pairs are formed.
Here, in each of the ring support members 2a and 2b, as shown in FIGS. 4 and 5, for example, the width direction of two ring support members 2a and 2b adjacent to each other (FIG. 4, 5, one or more bearing portions 5 having a substantially "C" shape or the like and open to the outside in the left and right direction are formed in the longitudinal direction.

  And here, the shaft member 3 is disposed parallel to the longitudinal direction of the ring support members 2a, 2b, through the inside of the respective bearing portions 5 of the ring support members 2a, 2b, whereby the ring support member 2a, 2b are mutually connected by each inserted bearing part 5 of the shaft member 3, and the binding tool 1 as shown is comprised.

  Such a binding tool 1 is shown in FIGS. 1 and 2 by rotationally displacing the ring support members 2a and 2b around the shaft members 3 inserted into the bearing portions 5 of the ring support members 2a and 2b. As shown, the opening and closing operation of the ring portions 4a and 4b formed on the ring support members 2a and 2b can be generated.

More specifically, as shown in FIG. 1, the respective paired ring parts 4a, 4b of the ring support members 2a, 2b approach each other at the tips of the ring parts 4a, 4b and their ring parts 4a , 4b form a ring shape such as a modified circular shape in which the curvature is slightly reduced in the vicinity of the surface Sf of the ring support members 2a, 2b. This state is referred to as the state in which the ring portions 4a and 4b are in the closed position.
When the ring support members 2a and 2b are pivotally displaced around the shaft member 3 from this closed position, the tips of the pair of ring portions 4a and 4b are separated from each other, as shown in FIG. It can be moved to the open position in which the ring parts 4a, 4b open. When the ring support members 2a and 2b are rotationally displaced in the reverse direction from the open position, the closed position can be obtained.

  Accordingly, the illustrated binding tool 1 can move the pair of ring portions 4a, 4b between the closed position and the open position, whereby, in the open position of the ring portions 4a, 4b, such as loose leaf paper etc. The sheet can be stapled by inserting the ring portions 4a and 4b into the holes provided in the sheet and moving the ring portions 4a and 4b to the closed position in this state. Thereafter, if necessary, the ring portions 4a and 4b are moved to the open position, and the paper sheet can be removed.

  By the way, in order to manufacture the binding tool 1, when the ring support members 2a and 2b are made of plastic, the ring support members 2a and 2b are formed by injection molding or the like, and then the ring support members 2a and 2b are adjacent to each other. In a state of being piled up in parallel, the shaft member 3 made of metal or the like is passed through the bearing portion 5 positioned between each of the ring support members 2a and 2b, and between the ring support members 2a and 2b. An operation of disposing the shaft member 3 in the shaft disposition space including the inside of the bearing portion 5 to be partitioned is required.

Here, temporarily, the linear shaft disposition space corresponding to the shape of the shaft member is linearly extended in the longitudinal direction to the end portion of the ring support member, and the shaft disposition space linearly penetrates to the end portion In this case, the operation of arranging the shaft member at the time of manufacturing the binding tool is facilitated since the shaft member may be inserted straight from the end.
However, in this case, when using the binding tool, the shaft member can easily come off from the shaft disposition space that leads linearly to the end of the ring support member, and the binding tool is easily disassembled.

  In order to prevent this, it is necessary to provide a wall or the like, which will be described later, for preventing the shaft member from coming off on the extension of the arrangement space of the shaft member at the end of the ring support members 2a and 2b. If the shaft member 3 is inserted from the end portion side of the ring support members 2a and 2b at the time of manufacturing the binding tool 1, the shaft member 3 is removed from the ring support member 2a, It will be made to approach, curving and deforming from a direction oblique to the longitudinal direction of 2b.

  In order to facilitate the entry of the shaft member 3 between the ring support members 2a and 2b, in this embodiment, as shown in FIG. 7, at least one end side of the ring support members 2a and 2b, An insertion guide passage 6 is provided which is eccentric from the central axis Cs of the shaft arrangement space As. The illustrated binding tool 1 has the ring support members 2a and 2b in the same shape, so the insertion guide passage 6 exists on both end sides of the ring support members 2a and 2b, but the end portion on either side It may be only the side.

According to this, when arranging the shaft member 3 at the time of manufacturing the binding tool 1, as shown in FIGS. 8A and 8B, from the end side of the ring supporting members 2a and 2b superimposed on each other When the shaft member 3 is inserted, the shaft member 3 can enter the shaft arrangement space As while being escaped into the insertion guide passage 6 which is eccentric from the central axis Cs of the shaft arrangement space As. The shaft member 3 can be disposed in the shaft disposition space As while keeping the degree of the bending deformation small.
As a result, the work of arranging the shaft member 3 can be easily performed.

  Further, by providing the insertion guide passage 6, even if the shaft member 3 having a large diameter and a high strength, for example, can be disposed in the shaft disposition space As, the shaft member 3 makes the binder 1 as a whole as a whole. Can be realized.

Although not shown, depending on the structure of the binding tool 1, the insertion guide passage may be, for example, the surface Sf side on which the ring shape of the ring portions 4a and 4b is formed with respect to the central axis Cs of the shaft arrangement space As It is also possible to make it eccentric to the back side Sb side etc. on the opposite side.
However, the ring support members 2a and 2b are provided with the bearing portion 5 and other mechanisms, and the shaft member 3 is effectively released during the operation of arranging the shaft member 3 while preventing interference with these mechanisms. In order to enable insertion, as in the illustrated embodiment, the insertion guide passage 6 is in the width direction (vertical direction in FIGS. 7 and 8) of two ring support members adjacent to each other, that is, either one It is preferable to make it eccentric to the side Ss side.

  In this embodiment, as shown in FIGS. 7 and 8, on the end side of the ring support members 2a and 2b, a part of the shaft disposition space As is further away from the central axis Cs than other portions of the shaft disposition space As. An enlarged space portion Es expanding in the direction is provided, and the enlarged portion of the expanded space portion Es is divided into the above-mentioned insertion guide passage 6, and the insertion guide passage 6 is provided there.

The illustrated insertion guide passage 6 is a space inner surface which divides the enlarged portion of the expanded space portion Es, for example, the shaft arranging space As width toward the end side with respect to the central axis Cs of the shaft arranging space As. It has a guide inclined surface 7 which inclines in a direction that extends in the direction. As shown in FIG. 8 (b), the guide inclined surface 7 is inserted from the end side of the ring support members 2a and 2b and passes the insertion guide passage 6 toward the shaft arrangement space As. It functions to guide you to enter. According to this, smoother insertion of the shaft member 3 between the ring support members 2a and 2b can be realized.
In this example, the central axis Cs of the shaft arrangement space As is coaxial with the central axis of the shaft member 3 properly arranged in the shaft arrangement space As.

  By the way, in this embodiment, the end of the ring support members 2a and 2b into which the shaft member 3 is inserted has a disk-like enlarged end whose outer periphery is enlarged compared to the other portions of the ring support members 2a and 2b. It is assumed that eight. The enlarged end 8 may be used for gripping by the user who performs the opening and closing operation of the ring portions 4a and 4b when using the binding 1. However, the enlarged end 8 may not be necessary.

  Here, the enlarged end 8 is provided with a shaft insertion hole 9 penetrating the enlarged end 8 in the longitudinal direction, and the insertion guide passage 6 described above reaches the enlarged end 8, The shaft insertion hole 9 is communicated and connected. With this configuration, at the time of the operation of arranging the shaft member 3 at the time of manufacturing the binding tool 1, the shaft member 3 is inserted into the shaft insertion hole 9 provided at the enlarged end 8 of the ring support members 2a and 2b. It can lead to the guide channel 6 and also to the shaft arrangement space As. Although it is possible to prevent the insertion guide passage from reaching the end of the ring support member, in this case, the shaft member 3 to be inserted from the front of the end must be deformed to a certain extent. Are concerned.

As shown in FIG. 9, the shaft insertion hole 9 can be provided as a notch having an opening on the outer peripheral surface 8a of the enlarged end 8 such as a disk. However, at the enlarged end 8 provided with the shaft insertion hole 9 shown in FIG. 9, when the user grips the enlarged end 8, the user can feel discomfort because the corner of the notched shaft insertion hole 9 abuts I can not deny sex.
Therefore, as shown in FIG. 10, the shaft insertion hole 19 may be formed on the inner side of the outer peripheral surface 18a without being opened to the outer peripheral surface 18a of the disk-like enlarged end portion 18. Since the shaft insertion hole 19 is not opened to the outer peripheral surface 18a of the enlarged end 18, when the user grips the enlarged end 18, there is no discomfort in the case of the shaft insertion hole 9 of FIG. In the shaft insertion hole 19 of FIG. 10, it is desirable that the outer peripheral surface 18a and the shaft insertion hole 19 have a certain thickness to secure a required strength.

Incidentally, as shown in FIG. 7, the shaft insertion hole 9 shown in FIGS. 7 to 9 is inclined relative to the central axis Cs as shown in FIG. 7 and moves to the central axis Cs toward the shaft arrangement space As. It can be an approaching slope. Thereby, the large bending deformation of the shaft member 3 at the time of inserting the shaft member 3 can be further suppressed.
On the other hand, since the shaft insertion hole 19 of FIG. 10 can be provided closer to the central axis Cs than the shaft insertion hole 9 of FIGS. 7 to 9, the shaft member 3 can be easily inserted.

In any shaft insertion holes 9 and 19 described above, the shaft member 3 can be easily inserted by being shifted in the direction different from the eccentric direction of the insertion guide passage 6 with respect to the central axis Cs of the shaft arrangement space As. It is preferable from the viewpoint of
More specifically, as in the illustrated embodiment, one side of the insertion guide passage 6 in the width direction of the ring support members 2a and 2b with respect to the central axis Cs of the shaft arrangement space As (FIGS. 7 and 10) Conversely, when the shaft insertion holes 9 and 19 are eccentric to the lower side in (a), the other side in the width direction with respect to the central axis Cs (upper in FIGS. 7 and 10A) It is preferable to shift the position to the side). By doing this, when inserting the shaft member 3, as can be understood from the place shown in FIG. 8, the widths from the shaft insertion holes 9 and 19 positioned on the other side in the width direction of the ring support members 2a and 2b A region where the shaft member 3 can be bent and deformed can be secured toward the insertion guide passage 6 positioned on one side of the direction.

  As described above, when the shaft insertion holes 9 and 19 are offset from the central axis Cs of the shaft arrangement space As, the positions of the enlarged ends 8 and 18 where the shaft arrangement space As is extended, a disk in the illustrated example Preferably, the retaining wall 10, 20 of the shaft member 3 is provided substantially at the center of the enlarged end 8, 18 of the shape. By providing the retaining wall portions 10 and 20, it is possible to prevent the shaft member 3 from being separated from the shaft disposition space As and falling off from the end of the ring support members 2a and 2b when using the binding 1. .

In the case of manufacturing the binding tool 1 having the configuration described above, the shaft member 3 can be easily inserted between the ring support members 2a and 2b to arrange the shaft member 3 in the shaft arrangement space As. it can.
As a result, it is possible to use a metal rod having a large diameter and a certain degree of strength as the shaft member 3, thereby enhancing the overall rigidity of the binding member 1 and opening and closing the ring portions 4 a and 4 b. The ease of use of the binding 1 can be improved, including the ease. The diameter of the metal rod as the shaft member 3 is preferably 1 mm or more. Usually, the diameter of the metal rod is often 2 mm or less.
The shaft member 3 may be made of plastic.

  The ring support members 2a and 2b used for the above-described binding tool 1 can have substantially flat frame portions 11a and 11b in which the ring portions 4a and 4b and the bearing portion 5 are formed. As shown in FIG. 6, in the frame portions 11a and 11b, a ring shape is formed by flat side surfaces Ss to which the bases of the ring portions 4a and 4b are connected and a pair of ring portions 4a and 4b. It includes a flat surface Sf on the side. Here, the flat surface means a flat surface which is not curved as a whole, although a hole portion by the bearing portion 5 or the like may be present as in the illustrated example. In particular, in this embodiment, the side surface Ss and the surface Sf of the frame portion 11a are oriented orthogonal to each other.

  In such frame portions 11a and 11b, at least a part in the longitudinal direction, as understood from FIG. 6A, for example, the portion on the back surface Sb side becomes narrower as it goes to the back surface Sb side and is closed. By forming the void Vf inward at the position, or the like, the stopper projection 12 can be provided which protrudes to the back surface Sb side from the bearing portion 5. The stopper protrusions 12 approach each other as the ring portions 4a and 4b move from the closed position to the open position, and abut on each other in the open position as shown in FIG. 6 (b) to further open the ring portions 4a and 4b. To prevent. The dimensions and shape of the stopper projection 12 can be appropriately determined according to the degree of opening of the ring portions 4a and 4b.

Further, in this embodiment, the two ring support members 2a and 2b are relatively movable in the longitudinal direction, and the frame portions 11a and 11b of the ring support members 2a and 2b have relative longitudinal directions. With such movement, the ring support members 2a and 2b are displaced in a direction away from each other, and a slide opening mechanism is provided to assist the movement of the ring portions 4a and 4b to the open position.
The slide opening mechanism is provided on each of the mutually opposing inner side surfaces of the frame portions 11a and 11b of the ring support members 2a and 2b, as shown in FIGS. 11 (a) and (b) respectively. It can be configured by the slide convex portions 13a and 13b that protrude.

The slide protrusions 13a and 13b both have inclined surfaces facing each other, and are provided so as to slightly extend in the longitudinal direction.
In the assembled state of the binding tool 1, as shown in FIG. 12 (a), the inclined surfaces of the slide convex portions 13a and 13b are separated from each other at the closed position, but the ring support members 2a and 2b As shown in FIG. 12 (b) as they move relative to each other in the longitudinal direction, they come in contact with each other, and move further, as shown in FIG. 12 (c). Displace in the direction away from you. In addition, the recessed part 14 which the other slide convex part 13b entraps in a closed position can be provided in the location adjacent to the longitudinal direction of one slide convex part 13a.

  The slide convex portions 13a and 13b are positioned as close as possible to the shaft member 3 which is the center of the rotational displacement of the ring support members 2a and 2b, for example, the surface Sf from the shaft member 3 to the shaft arrangement space As as in the illustrated example. It is preferable that the ring support members 2a and 2b can be widely separated by a short stroke in the longitudinal direction of the ring support members 2a and 2b if they are provided adjacent to the shaft member 3 or the shaft arrangement space As on the side.

  Further, in this embodiment, as shown in FIGS. 11 (a) and 11 (b), the mutually opposing end portions of the bearing portions 5 provided on the ring support members 2a and 2b engage with each other in the closed position. The engagement is released with the relative movement of the ring support members 2a and 2b in the longitudinal direction, and the engagement claws 15a and 15b are provided to enable the rotational displacement of the ring support members 2a and 2b. ing. Thereby, it is possible to prevent an unintended opening of the ring portions 4a and 4b before relatively moving the ring support members 2a and 2b in the longitudinal direction.

  Also, in the binding tool 1 of this embodiment, for example, in the central region in the longitudinal direction of the ring support members 2a and 2b, as shown in FIG. 13, those two ring support members 2a and 2b are It further comprises a coil spring 16 biasing the ring portions 4a, 4b in a closing direction. The coil spring 16 cooperates with the engagement pawl 15a as described above to function to maintain the ring portions 4a, 4b in the closed position. Thus, in order to move the ring portions 4a, 4b from the closed position to the open position, the user moves the ring support members 2a, 2b in the longitudinal direction against the biasing force of the coil spring 16, thereby engaging the engagement. The engagement state of the joint claws 15a and 15b is released. At this time, since the ring support members 2a and 2b are displaced in the direction away from each other based on the function of the slide opening mechanism described above, the ring portions 4a and 4b are then moved to the open position almost automatically. become.

  A shaft member 3 is disposed inside the coil spring 16 so as to pass therethrough. When manufacturing the binder 1 having the coil spring 16, after the ring support members 2a and 2b are superimposed on each other and the coil spring 16 is disposed at a predetermined position between the ring support members 2a and 2b, the ring support member The shaft member 3 is inserted from the end of 2a, 2b. However, it is good also as a binding tool which does not have a coil spring.

Reference Signs List 1 binding tool 2a, 2b ring support member 3 shaft member 4a, 4b ring portion 5 bearing portion 6 insertion guide passage 7 guide inclined surface 8, 18 enlarged end portion 8a, 18a outer peripheral surface 9, 19 shaft insertion hole 10, 20 Wall part 11a, 11b Frame part 12 Stopper projection part 13a, 13b Slide convex part 14 Concave part 15a, 15b Engaging claw 16 Coil spring Sf Front side Sb Back side Sb Back side Vf Vacant place As Shaft arrangement space Es Expansion space portion Cs Shaft arrangement space Central axis

Claims (13)

Two ring support members adjacent to each other, each pair having a ring portion and a bearing portion formed thereon, and disposed through the bearing portion of each ring support member along the longitudinal direction of the ring support member; And a shaft member connecting the ring support members to each other, and the rotational displacement of the ring support member around the shaft members causes the ring portions to be formed with the respective tip portions of the ring portions forming a pair. A closure which is movable between a closed position in which a ring shape is formed close to each other and an open position in which the respective tips are separated from each other,
Between the two ring support members, there is provided a shaft disposition space extending in the longitudinal direction of the ring support member including the inside of the bearing portion, and at least one end of the ring support member is the shaft insertion guide passage is provided Rutotomoni eccentrically from the center axis of the arrangement space,
The shaft disposition space has an enlarged space portion on the end side of the ring support member, which extends in a direction away from the central axis of the shaft disposition space relative to other portions of the shaft disposition space; A part of the space portion is divided as the insertion guide passage,
The binding tool , wherein the insertion guide passage has a guide inclined surface which is inclined with respect to a central axis of the shaft disposition space .   2. The binding tool according to claim 1, wherein the insertion guide passage is at least partially offset from the central axis of the shaft disposition space in the width direction of two ring support members adjacent to each other. The insertion guide passage, binding tool according to claim 1 or 2 comprising reaches the end of the ring support member. End of the ring support member is an enlarged end that is larger periphery than the other portions, the enlarged end portion, the insertion guide passage shaft insertion hole is provided leading claim 3 The binding described in. 5. The binding tool according to claim 4 , wherein the shaft insertion hole of the enlarged end portion is offset from a central axis of the shaft disposition space in a direction different from an eccentric direction of the insertion guide passage. The insertion guide passage is eccentric to one side in the width direction of two ring support members adjacent to each other with respect to the central axis of the shaft disposition space, and the shaft insertion hole is deviated to the other side in the width direction The binding tool according to claim 5 , wherein the binding tool is positioned. The binding wall according to any one of claims 4 to 6 , wherein a retaining wall portion for housing a shaft member in the shaft disposition space is provided at a position of the enlarged end portion where the shaft disposition space is extended. Equipment. The binding according to any one of claims 4 to 7 , wherein the shaft insertion hole is present inside the outer peripheral surface of the enlarged end. The binding according to any one of claims 4 to 7 , wherein the shaft insertion hole is opened at the outer peripheral surface of the enlarged end. The binding according to any one of claims 1 to 9 , wherein the shaft member is a metal rod having a diameter of 1 mm or more. Each ring support member has a frame portion including a flat side surface connected with the base of the ring portion and a flat surface on the side on which the ring shape is formed by the pair of ring portions The binding according to any one of claims 1 to 10 , wherein the bearing portion is accommodated inside the frame portion. The frame portion may have a stopper protrusion on the back surface side, which protrudes on the back surface side more than the bearing portion, and the ring portions approach each other in the open position from the closed position toward the open position. Item 11. The binding according to item 11 . Two of the ring supporting member is relatively movable in the longitudinal direction, and having further a coil spring for urging the mutual two ring support member longitudinally claim 1 any one of the 12 The binding as described in the paragraph.