TWI701161B - Binding tool - Google Patents

Abstract

The binding tool of the present invention is the following binding tool 1, which has two ring support members 2a, 2b and a length along the ring support members 2a, 2b, each of which is adjacent to each other and is formed with a pair of ring portions 4a, 4b and a bearing portion 5 The direction of the shaft member 3 which is arranged by the above-mentioned bearing portion 5 of each ring support member 2a, 2b and connects the two ring support members 2a, 2b to each other, can be rotated by the ring support members 2a, 2b around the shaft member 3 Shift to move the ring parts 4a, 4b between the closed position where the front ends of the pair of ring parts 4a, 4b are close to each other to form a ring shape and the open position where the respective front ends are separated from each other. The ring support members 2a, 2b have a shaft arrangement space As extending in the longitudinal direction of the ring support members 2a, 2b including the inner side of the bearing portion 5, at the end of at least one of the ring support members 2a, 2b An insertion guide passage 6 eccentric from the central axis of the shaft arrangement space As is provided on the side.

Description

Binding tool

The present invention relates to a binding tool that can open and close the paired ring portions formed on each ring support member by the rotation and displacement of the two ring support members around the shaft member. For example, it relates to a kind of paper suitable for loose-leaf paper. A binding tool for binding pages, especially a technology that can realize the easy manufacture of the binding tool.

This kind of binding tool allows a shaft member made of metal, which is a member separate from the two ring support members, to pass through the bearing portions formed on each member of the two ring support members, and the ring support member is rotated and displaced around the shaft member , Thereby opening and closing the ring part of the ring support member. Thereby, the paper sheets can be bound at the closed position where the front end of the ring part is approached to form a ring shape. On the other hand, the paper sheets can be detached at the open position where the front end of the ring part is separated. As such a binding tool, those described in Patent Documents 1 to 6 are known. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 5698320 [Patent Document 2] Japanese Patent No. 5797685 [Patent Document 3] Japanese Patent No. 5226146 [Patent Document 4] Japanese Patent No. 4954301 [Patent Document 5] Japanese Patent No. 5049984 [Patent Document 6] Japanese Patent No. 5049985

[The problem to be solved by the invention]

However, according to the above-mentioned binding tool having a shaft member, even if a smooth rotation displacement of the ring support member and a smooth opening and closing action of the ring part accompanying it can be achieved, a shaft member different from the ring support member is required during its manufacture Pass through the bearing part of the ring supporting member and arrange the work on it.

Here, from the viewpoint of preventing the shaft member from falling 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 made straight through to the end of the ring support member The shape is not ideal. On the other hand, in consideration of the above situation, when the end of the ring support member is located on the extension line of the arrangement space of the shaft member, a wall portion for stopping the shaft member is provided in order to make the shaft member To insert from the end side of the ring support member, the shaft member must be bent and deformed from a direction inclined with respect to the longitudinal direction of the ring support member into the arrangement space and enter, and pass through the bearing portion of the ring support member.

In this case, there is a problem that the shape of the ring support member or the material, strength, or diameter of the shaft member such as metal makes it difficult to arrange the shaft member in the arrangement space between the ring support members.

The subject of the present invention is to cope with such problems, and its object is to provide a binding tool that can easily perform the operation of arranging the shaft member between the ring support members when manufacturing a predetermined binding tool having a ring support member and a shaft member. [Means to solve the problem]

The binding tool of the present invention has two ring support members adjacent to each other and each formed with a pair of ring portions and bearing portions, and is arranged along the length direction of the ring support members through the bearing portions of each ring support member and The shaft member that connects the two ring support members to each other can be formed by rotating and displacing the ring support members around the shaft member so that the ring portions and the front ends of the ring portions in the pair approach each other. Move between the closed position of the ring shape and the open position where the respective front end portions are separated from each other, and between the two ring support members, there is a shaft arrangement that includes the inner side of the bearing portion and extends along the length direction of the ring support member. In the space, an insertion guide passage eccentric from the center axis of the shaft arrangement space is provided on the end side of at least one of the ring support members.

Here, it is preferable that the insertion guide path is eccentric from the central axis of the shaft arrangement space in the width direction of the two adjacent ring support members at least in part.

Furthermore, here, the insertion guide passage is preferably provided in an enlarged space portion that is enlarged in a direction deviating from the central axis of the shaft arrangement space compared to other portions of the shaft arrangement space.

In addition, it is preferable that the insertion guide passage has a guide inclined surface inclined with respect to the central axis of the shaft arrangement space.

In the binding tool of the present invention, the insertion guide path may be provided to reach the end of the ring support member. In this case, the end of the ring support member may be an enlarged end whose outer circumference is enlarged compared to other parts, and it is suitable that the enlarged end is provided with a shaft insertion hole connected to the insertion guide passage.

The shaft insertion hole of the enlarged end is preferably located at a position that is offset in a direction different from the eccentric direction of the insertion guide passage with respect to the central axis of the shaft arrangement space. Especially here, it is more preferable that the insertion guide passage is eccentric to one side of the width direction of the two ring support members adjacent to each other with respect to the central axis of the shaft arrangement space, and the shaft insertion hole is located eccentric to the width The position on the other side of the direction.

It is preferable that a stop wall portion for accommodating the shaft member in the shaft arrangement space is provided at a position where the shaft arrangement space of the enlarged end portion extends.

Furthermore, the shaft insertion hole may be provided inside the outer peripheral surface of the enlarged end portion. Alternatively, the shaft insertion hole may be opened to the outer peripheral surface of the enlarged end.

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

In addition, each of the above-mentioned ring support members preferably has a side surface of a flat surface connected to the base of the ring portion, and a frame portion having a flat surface on the side where the ring shape is formed by the pair of ring portions , And the bearing part is housed inside the frame part.

In this case, it is appropriate that the frame portion on the back side has a stop that protrudes further to the back side than the bearing portion, and as the ring portion approaches each other from the closed position toward the open position, and abuts at the open position. Move the protrusion.

Furthermore, the binding tool of the present invention can be configured such that the two ring supporting members can move relative to each other along the length direction, and further have a coil spring for urging the two ring supporting members mutually along the length direction. [Effects of Invention]

In the binding tool of the present invention, by providing an eccentric insertion guide path from the center axis of the shaft arrangement space between the ring support members on the end side of at least one of the ring support members, the shaft member is self-supported by the ring When the end of the member enters into the shaft arrangement space, the shaft member can be deformed, and at the same time, it can be biased to the eccentric insertion guide path and reach the shaft arrangement space. As a result, the work of arranging the shaft member between the ring support members can be easily performed.

Hereinafter, the 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 includes: long ring support members 2a, 2b, which are arranged adjacent to each other in one direction; and a rod-shaped shaft member 3 such as a straight rod, as shown in FIG. 4 It can be seen that the shaft member 3 is arranged between the ring support members 2a and 2b as a cross-sectional view in -6.

Here, each ring support member 2a, 2b is formed with a predetermined interval in the longitudinal direction of each ring portion 4a, 4b of substantially semicircular arc shape curved and extended from the side surface Ss to the surface Sf side. Moreover, here, on each of the ring supporting members 2a, 2b, one or more bearing portions 5 are formed along the longitudinal direction between the ring supporting members 2a, 2b. The bearing portions 5 are shown in Figs. 4 and 5, for example, substantially facing each other. The two adjacent ring support members 2a, 2b have an open "C" shape on the outside in the width direction (the left and right directions in FIGS. 4 and 5).

And, here, the shaft member 3 is arranged parallel to the longitudinal direction of the ring support members 2a, 2b through the inner side of the bearing portion 5 of the ring support members 2a, 2b, whereby the ring support members 2a, 2b are inserted into the shaft The bearing parts 5 of the component 3 are connected to each other to form the binding tool 1 as shown in the figure.

The binding tool 1 rotates and displaces the ring support members 2a, 2b around the shaft member 3 inserted into the bearing portions 5 of the ring support members 2a, 2b, thereby, as shown in Figs. 1 and 2, The ring portions 4a, 4b formed on the ring supporting members 2a, 2b are opened and closed.

In more detail, as shown in FIG. 1, the ring portions 4a, 4b of the ring support members 2a, 2b are close to each other at the front end of the ring portions 4a, 4b. By these ring portions 4a, 4b, In the vicinity of the surface Sf of the ring support members 2a and 2b, a ring shape such as a special circular shape with a slightly smaller curvature is formed. This state is called a state where the ring portions 4a and 4b are in the closed position. If the ring support members 2a, 2b are rotated and displaced around the shaft member 3 from the state of the closed position, the front ends of the paired ring portions 4a, 4b are separated from each other, as shown in Fig. 2 and can be moved to The open position where the ring parts 4a, 4b are opened. If the ring support members 2a and 2b are rotated and displaced in the opposite direction from the open position, the closed position can be obtained.

Therefore, the binding tool 1 shown in the figure can move the pair of ring portions 4a, 4b between the closed position and the open position, whereby the ring portions 4a, 4b are inserted into the open positions of the ring portions 4a, 4b. In the hole of loose-leaf paper, etc., the loop parts 4a, 4b are moved to the closed position in this state, whereby the paper sheets can be bound. After that, if the ring parts 4a, 4b are moved to the open position as needed, the paper sheet can be detached.

In addition, in order to manufacture the binding tool 1, when the ring support members 2a, 2b are made of plastic, the following operations are required: after the ring support members 2a, 2b are formed by injection molding or the like, the ring support members 2a, 2b In the state where 2b are adjacent to each other and overlapped in parallel, the shaft member 3 made of metal is passed through the bearing portion 5 of each of the ring support members 2a, 2b, and the shaft member 3 is arranged between the ring support members 2a, 2b. The shaft arrangement space which is divided from each other includes the inner side of the bearing part 5.

Here, it is assumed that the linear shaft arrangement space corresponding to the shape of the shaft member is linearly extended in the longitudinal direction to the end of the ring support member, and the shaft arrangement space penetrates linearly to the end, the binding tool The arranging operation of the shaft member during the manufacturing process is to insert the shaft member directly from the end, so it becomes easy. However, in this case, when the binding tool is used, the shaft member becomes easy to fall off from the shaft arrangement space linearly connected 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 portion for stopping the shaft member, etc., described later, on the extension line of the arrangement space of the shaft member at the end of the ring support member 2a, 2b, thereby manufacturing the binding tool 1. When inserting the shaft member 3 from the end side of the ring support members 2a, 2b, the shaft member 3 is deflected from the above-mentioned wall portion and the like and bends and deforms from a direction inclined with respect to the longitudinal direction of the ring support members 2a, 2b. enter.

In order to make it easy to enter the shaft member 3 between the ring support members 2a and 2b, in this embodiment, as shown in FIG. 7, it is provided on the end side of at least one of the ring support members 2a and 2b. The insertion guide passage 6 is eccentric from the center axis Cs of the shaft arrangement space As. Furthermore, since the binding tool 1 shown in the figure makes the ring support members 2a, 2b the same shape as each other, the insertion guide path 6 exists on the both end sides of the ring support members 2a, 2b, but it may only be The end side on either side.

Thereby, during the arrangement operation of the shaft member 3 when manufacturing the binding tool 1, as shown in Fig. 8 (a) and (b), if the shaft member 3 is inserted from the end side of the ring support members 2a, 2b overlapping each other , The shaft member 3 can be biased into the insertion guide passage 6 eccentric from the central axis Cs of the shaft arrangement space As, and enter the shaft arrangement space As, so that the degree of bending deformation of the shaft member 3 during insertion can be suppressed to a lower level It is small, and the shaft member 3 is arranged in the shaft arrangement space As. Thereby, the arrangement work of the shaft member 3 can be easily performed.

Moreover, by providing the insertion guide path 6, for example, even a shaft member 3 with a larger diameter and higher strength can be arranged in the shaft arrangement space As, and the shaft member 3 can be used to improve the overall binding tool 1 Rigidity etc.

Although the illustration is omitted, the structure of the binding tool 1 allows the insertion guide path to be directed, for example, to the surface Sf side of the ring shape formed by the ring portions 4a and 4b with respect to the central axis Cs of the shaft arrangement space As, or to This side is eccentric such as the back side Sb on the opposite side. However, bearing parts 5 or other mechanisms are provided on the ring support members 2a and 2b. In order to prevent interference with these mechanisms, and to effectively deviate and insert the shaft member 3 during the configuration operation of the shaft member 3, it is preferable to As in the embodiment shown in the figure, the insertion guide passage 6 is eccentric to the width direction of the two adjacent ring support members (the vertical direction in FIGS. 7 and 8), that is, the side surface Ss of either side.

In this embodiment, as shown in FIGS. 7 and 8, on the end side of the ring support members 2a, 2b, a part of the shaft arrangement space As is provided with an offset from the center axis Cs compared to the other parts of the shaft arrangement space As. The enlarged space part Es that expands in the direction of the direction, the enlarged part of the enlarged space part Es is divided into the above-mentioned insertion guide passage 6, and the insertion guide passage 6 is provided therein.

In addition, the insertion guide passage 6 shown in the figure serves as a space inner surface that divides the enlarged portion of the enlarged space portion Es, and has a guide inclined surface 7 which faces the central axis Cs of the shaft arrangement space As, for example, It is inclined in the direction in which the axis arrangement space As is enlarged in the width direction toward the end side. As shown in FIG. 8( b ), the guide inclined surface 7 functions to guide the shaft member 3 inserted from the end side of the ring support members 2 a and 2 b and enter the shaft arrangement space As through the insertion guide passage 6. Thereby, it is possible to realize smoother insertion into the shaft member 3 between the ring supporting members 2a and 2b. Furthermore, in this example, the central axis Cs of the shaft arrangement space As is coaxial with the central axis of the shaft member 3 appropriately arranged in the shaft arrangement space As.

In addition, in this embodiment, the end portions of the ring support members 2a, 2b inserted into the shaft member 3 are the enlarged end portions 8 of a disk shape whose outer periphery is enlarged compared with the other parts of the ring support members 2a, 2b. The enlarged end 8 is a user who can hold the opening and closing actions of the loop parts 4a and 4b when the binding tool 1 is used, but the enlarged end 8 may not be necessary in some cases.

In addition, the enlarged end portion 8 is provided with a shaft insertion hole 9 extending through the enlarged end portion 8 in the longitudinal direction. The above-mentioned insertion guide passage 6 reaches the enlarged end portion 8 and is connected to the shaft insertion hole 9 . With this configuration, during the arranging operation of the shaft member 3 when manufacturing the binding tool 1, the shaft member 3 can be inserted into the shaft insertion hole 9 provided at the enlarged end 8 of the ring support member 2a, 2b and reach it Insert the guide passage 6 and further to the shaft arrangement space As. Furthermore, the insertion guide passage may not reach the end of the ring support member, but in this case, the shaft member 3 inserted from the near side of the end may be deformed greatly to some extent.

As shown in FIG. 9, the shaft insertion hole 9 can be provided in the form of a notch open toward the outer peripheral surface 8 a of the enlarged end 8 such as a disk. However, in the enlarged end portion 8 provided with the shaft insertion hole 9 shown in FIG. 9, when the user holds the enlarged end portion 8, it is undeniable that he may feel that he may touch the corner of the cut-out shaft insertion hole 9 Not smooth. Therefore, as shown in FIG. 10, the shaft insertion hole 19 which does not open toward the outer peripheral surface 18a of the enlarged end 18 of a disk shape etc., but exists in the inner side of this outer peripheral surface 18a, may be provided. Since the shaft insertion hole 19 does not open toward the outer peripheral surface 18a of the enlarged end portion 18, when the user grips the enlarged end portion 18, the shaft insertion hole 9 in FIG. 9 is not smooth. Furthermore, in the shaft insertion hole 19 of FIG. 10, it is preferable to provide a certain degree of thickness between the outer peripheral surface 18a and the shaft insertion hole 19 to ensure the required strength.

In addition, the shaft insertion hole 9 in FIGS. 7 to 9 is as shown in FIG. 7. The inner surface on the central axis Cs side is inclined with respect to the central axis Cs and approaches the central axis Cs as it goes to the shaft arrangement space As side. The slope. This can further suppress the large bending deformation of the shaft member 3 when the shaft member 3 is inserted. 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. 7-9, the shaft member 3 can be easily inserted.

For any of the above-mentioned shaft insertion holes 9, 19, from the viewpoint of realizing easy insertion of the shaft member 3, it is preferable to be located at the eccentricity and the eccentricity of the insertion guide passage 6 with respect to the central axis Cs of the shaft arrangement space As Position in different directions. More specifically, as in the illustrated embodiment, the insertion guide path 6 is directed to one of the width directions of the ring support members 2a, 2b with respect to the central axis Cs of the shaft arrangement space As (FIGS. 7 and 10 (A) is the lower side) In the case of eccentricity, it is appropriate that the shaft insertion holes 9, 19 are located on the other side in the width direction with respect to the central axis Cs (Figure 7 and Figure 10 (a) are (Upper side) position. As a result, when inserting the shaft member 3, as shown in FIG. 8, it can be ensured that the shaft member 3 can be moved from the shaft insertion holes 9, 19 on the other side of the ring support members 2a, 2b in the width direction to the width direction. One side of the insertion guide path 6 is bent and deformed.

In the case where the shaft insertion holes 9 and 19 are eccentrically arranged with respect to the central axis Cs of the shaft arrangement space As as described above, it is preferable to enlarge the positions of the end portions 8, 18 to extend the shaft arrangement space As, as shown in the figure In the example, the stop wall portions 10 and 20 of the shaft member 3 are provided at substantially the center of the enlarged end portions 8 and 18 of the disk shape. By providing the stopper wall portions 10 and 20, when the binding tool 1 is used, it is possible to prevent the shaft member 3 from deviating from the shaft arrangement space As and falling off from the ends of the ring supporting members 2a and 2b.

In the binding tool 1 having the above-mentioned configuration, the shaft member 3 can be easily inserted between the ring support members 2a and 2b during manufacture, and the shaft member 3 can be arranged in the shaft arrangement space As. As a result, a metal rod with a certain diameter and strength can be used as the shaft member 3, thereby improving the rigidity of the entire binding tool 1, and improving the ease of opening and closing operations including the ring portions 4a, 4b The ease of use of the binding tool 1 inside. It is suitable to set the diameter of the metal rod as the shaft member 3 to 1 mm or more. Furthermore, in most cases, the diameter of the metal rod is set to 2 mm or less. As the shaft member 3, a plastic product can also be used.

Furthermore, the ring support members 2a, 2b used in the above-mentioned binding tool 1 may have substantially flat frame portions 11a, 11b in which the ring portions 4a, 4b and the bearing portion 5 are formed. As shown in FIG. 6, the frame portions 11a, 11b include a flat side surface Ss connecting the bases of the ring portions 4a, 4b, and a flat surface on the side formed by the pair of ring portions 4a, 4b. Surface Sf. In addition, the term "flat surface" here means a flat surface that is not curved as a whole, but there may be a hole formed by the bearing portion 5 and the like as in the example shown in the figure. Especially in this embodiment, the side surface Ss and the surface Sf of the frame portion 11a are set to be orthogonal to each other.

In such frame portions 11a, 11b, at least a part of the longitudinal direction, as shown in FIG. 6(a), for example, by setting the part on the back surface Sb side to have a narrower width toward the back surface Sb side and at the closed position The shape and the like of the void Vf are generated inside, and the stop protrusion 12 that protrudes to the back surface Sb side more than the bearing part 5 can be provided. The stop protrusions 12 approach each other as the ring portions 4a, 4b move from the closed position to the open position, and abut at the open position as shown in FIG. 6(b), thereby preventing the ring portions 4a, 4b from further opening. The size and shape of the stop protrusion 12 can be appropriately determined according to the degree of opening allowed by the ring portions 4a and 4b.

In addition, in this embodiment, the two ring support members 2a, 2b can move relatively along the length direction. The frame portions 11a, 11b of the ring support members 2a, 2b are provided with a sliding opening mechanism, which follows the relative movement in the length direction. The movement causes the ring support members 2a, 2b to be displaced in the direction of separating each other, and the auxiliary ring parts 4a, 4b move to the open position. The sliding opening mechanism is shown in each of Figures 11(a) and (b), which can be formed by sliding protrusions provided on the inner sides of the frame portions 11a, 11b of the ring support members 2a, 2b facing each other and protruding from the inner side 13a, 13b constitute.

The sliding protrusions 13a, 13b are both provided with inclined surfaces facing each other, and slightly extend along the length direction. In the state of assembling the binding tool 1, the opposite slopes of the sliding protrusions 13a, 13b are shown in Figure 12(a), which are separated from each other in the closed position, but as the ring support members 2a, 2b are moved along The longitudinal direction moves relatively, and contacts as shown in Figure 12(b), and if it moves further, it abuts against each other as shown in Figure 12(c), and the ring support members 2a, 2b move in the direction of separation from each other Bit. Furthermore, a concave portion 14 into which another sliding convex portion 13b enters at a closed position can be provided at a position adjacent to the length direction of one sliding convex portion 13a.

As far as the ring support members 2a, 2b can be largely separated by a shorter stroke in the longitudinal direction of the ring support members 2a, 2b, the sliding protrusions 13a, 13b are preferably provided as close as possible to become the ring support member The position of the shaft member 3 at the center of the rotational displacement of 2a and 2b is set on the surface Sf side of the shaft member 3 and the shaft arrangement space As, as shown in the example, adjacent to the shaft member 3 and the shaft arrangement space As The location.

Furthermore, in this embodiment, as shown in each of Figures 11(a) and (b), the end portions of the bearing portions 5 provided on the ring support members 2a, 2b that face each other are provided with engaging claws 15a, 15b, the engaging claws 15a, 15b are engaged with each other at the closed position, and the engagement is released with the relative movement of the ring support members 2a, 2b in the longitudinal direction, and the rotation and displacement of the ring support members 2a, 2b is realized. Thereby, it is possible to prevent the unintentional opening of the ring portions 4a, 4b before the ring supporting members 2a, 2b are relatively moved in the longitudinal direction.

In addition, as shown in FIG. 13, the binding tool 1 of this embodiment further includes a coil spring 16 in the central area of the ring support members 2a and 2b in the longitudinal direction. The coil spring 16 includes the two ring support members 2a and 2b. 2b springs to the direction of the closed loop parts 4a, 4b in the length direction. The coil spring 16 cooperates with the engaging claw 15a as described above, and functions to maintain the ring portions 4a and 4b in the closed position. Therefore, when the user moves the ring portions 4a, 4b from the closed position to the open position, they resist the force of the coil spring 16 and move the ring support members 2a, 2b in the longitudinal direction, thereby releasing the engagement claws. 15a, 15b are in the locked state. Furthermore, at this time, based on the function of the sliding opening mechanism described above, the ring support members 2a, 2b are displaced in a direction apart from each other, so the rear ring portions 4a, 4b move to the open position substantially automatically.

Furthermore, the shaft member 3 is arranged penetratingly inside the coil spring 16. When manufacturing the binding tool 1 with the coil spring 16, the ring support members 2a, 2b are overlapped with each other, and the coil spring 16 is arranged at a predetermined position between the ring support members 2a, 2b, and then the ends of the ring support members 2a, 2b部 Inserted into the shaft member 3. But it can also be set as a binding tool without a coil spring.

1‧‧‧Binding tool 2a, 2b‧‧‧Ring support member 3‧‧‧Shaft member 4a, 4b‧‧‧ring part 5‧‧‧Bearing part 6‧‧‧Insert the guide path 7‧‧‧Guide inclined surface 8, 18‧‧‧Expanded end 8a、18a‧‧‧Outer peripheral surface 9,19‧‧‧Shaft insertion hole 10, 20‧‧‧stop wall 11a, 11b‧‧‧Frame part 12‧‧‧stop protrusion 13a, 13b‧‧‧Sliding convex part 14‧‧‧Concave 15a、15b‧‧‧Clamping claw 16‧‧‧Helical spring Sf‧‧‧surface Ss‧‧‧ side Sb‧‧‧Back Vf‧‧‧Empty As‧‧‧Axis configuration space Es‧‧‧Expand the space Cs‧‧‧The central axis of the shaft configuration space

Fig. 1 is a perspective view showing a binding tool according to an embodiment of the present invention with the ring part in the closed position. Fig. 2 is a perspective view of the binding tool of Fig. 1 with the ring part in the open position. Figure 3 is a side view of the binding tool of Figure 1; Fig. 4 is a cross-sectional view taken along the line IV-IV of Fig. 3. Figure 5 is a cross-sectional view taken along the line V-V of Figure 3. Figures 6(a) and (b) are cross-sectional views taken along the line VI-VI of Figure 3 and the same cross-sectional views showing the state of the ring part in the open position. Fig. 7 shows a longitudinal cross-sectional view of a main part on the end side of the binding tool of Fig. 1 in a width direction parallel to the central axis including the shaft arrangement space. 8(a) and (b) are longitudinal cross-sectional views which are the same as those of FIG. 7 respectively showing the state in the process of assembling the binding tool of FIG. Figure 9 is a bottom view of the binding tool of Figure 1; 10(a) and (b) are longitudinal cross-sectional views and bottom views parallel to the width direction including the central axis of the shaft arrangement space showing the modification of the end of the ring support member. Figures 11 (a) and (b) are perspective views showing a part of the longitudinal direction of each ring supporting member included in the binding tool of Figure 1; Figures 12(a) to (c) are partial longitudinal cross-sectional views showing the movement of the sliding convex portion of the ring support member of the binding tool of Fig. 1 through which the sliding convex portion passes. Figure 13 is a partial rear view of the binding tool of Figure 1;

1‧‧‧Binding tool

2a, 2b‧‧‧Ring support member

4a, 4b‧‧‧ring part

8‧‧‧Expanded end

Claims (13)

A binding tool having two ring support members adjacent to each other and each formed with a pair of ring portions and bearing portions, and arranged along the length direction of the ring support member through the bearing portions of each ring support member, and the two The shaft members connected with the ring support members can be rotated and displaced by the ring support members around the shaft member, so that the ring portions and the respective front ends of the pair of ring portions approach each other to form a ring shape Move between the closed position and the open position where the respective front end portions are separated from each other, and between the two ring support members, there is a shaft arrangement space that includes the inner side of the bearing portion and extends along the length direction of the ring support member, An insertion guide passage eccentric from the central axis of the shaft arrangement space is provided on the end side of at least one of the ring support members, and the shaft arrangement space is provided on the end side of the ring support member with the shaft The other part of the arrangement space is larger than the enlarged space part in the direction deviating from the central axis of the shaft arrangement space. A part of the enlarged space part is divided as the insertion guide passage, and the insertion guide passage is arranged relative to the shaft The guiding inclined surface where the center axis of the space is inclined. The binding tool according to claim 1, wherein at least a part of the insertion guide path is eccentric from the central axis of the shaft arrangement space in the width direction of two adjacent ring support members. The binding tool according to claim 1 or 2, wherein the insertion guide path reaches the end of the ring support member. The binding tool according to claim 3, wherein the end portion of the ring support member is an enlarged end portion whose outer circumference is enlarged compared with other portions, and the shaft insertion hole connected to the insertion guide passage is provided at the enlarged end portion. The binding tool as described in claim 4, wherein: The shaft insertion hole of the enlarged end is located at a position that is offset in a direction different from the eccentric direction of the insertion guide passage with respect to the central axis of the shaft arrangement space. The binding tool according to claim 5, wherein, with respect to the central axis of the shaft arrangement space, the insertion guide path is eccentric to one side in the width direction of two adjacent ring supporting members, and the shaft insertion hole Located on the other side of the width direction. The binding tool according to claim 4, wherein a stop wall portion for accommodating the shaft member in the shaft arrangement space is provided at a position where the shaft arrangement space is extended at the enlarged end portion. The binding tool according to claim 4, wherein the shaft insertion hole is located inside the outer peripheral surface of the enlarged end portion. The binding tool according to claim 4, wherein the shaft insertion hole is open to the outer peripheral surface of the enlarged end. The binding tool according to claim 1 or 2, wherein the shaft member is a metal rod having a diameter of 1 mm or more. The binding tool according to claim 1 or 2, wherein each of the ring support members has a side surface including a flat surface connected to a base of the ring portion, and a side on which the ring shape is formed by the pair of ring portions The frame part of the flat surface has the bearing part inside the frame part. The binding tool according to claim 11, wherein the frame portion has a back side that protrudes further to the back side than the bearing portion, and approaches each other as the ring portion moves from the closed position to the open position, and is in the open position Stop protrusion that abuts at each location. The binding tool according to claim 1 or 2, wherein: The two ring support members are relatively movable along the length direction, and further have a coil spring that urges the two ring support members mutually along the length direction.

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