JP3775217B2 - Binding tool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a binding tool, and more particularly, to a binding tool that can prevent inadvertent disassembly of components constituting the binding tool before the binding tool is fixed to a predetermined cover body.
[0002]
[Prior art]
Conventionally, a binding tool is fixed to the inner surface of a cover body such as a binder. As the binding tool, for example, a base having a first ring forming body, and a second ring forming which is attached to the base from the back side and forms a closed loop by engaging with a tip portion of the first ring forming body. The thing of the structure provided with the rotation member which has a body is known. Such a binding tool is assembled by attaching the rotating member to the base, and then the first and second ring forming bodies are attached so that the rotating member does not fall off from the base in a stage prior to attachment to the cover body. Engage with each other and stay in a closed loop.
[0003]
[Problems to be solved by the invention]
However, in the binding tool, when the above-described engagement is released in the distribution stage before being fixed to the cover body, the parts are likely to be separated from each other. There is an inconvenience that the fixing work is disturbed.
[0004]
OBJECT OF THE INVENTION
The present invention has been devised by paying attention to such inconveniences, and its purpose is to avoid the possibility that the binding tool may be inadvertently disassembled before being fixed to the cover body. It is providing the binding tool which can reduce the work burden of this.
[0005]
[Means for Solving the Problems]
To achieve the above object, the present invention provides a base having a first ring forming body, and a second ring forming rotatably attached to the base and capable of forming a closed loop with the first ring forming body. In a binding tool comprising a rotating member having a body,
The rotating member includes a rotating shaft that holds the second ring forming body, and a protrusion that is directed from an outer peripheral portion of the rotating shaft in a direction substantially orthogonal to the axial direction of the rotating shaft. A configuration is adopted in which a drop-off preventing portion that engages with the protrusion is formed so as to restrict the drop-off of the rotary member from the base in a state where the rotary shaft is combined with the base. According to such a configuration, in a state where the rotating member is attached to the base, it is possible to restrict the rotating member from dropping from the base due to the engagement of the base-side falling prevention portion and the rotating member-side protrusion. Even if the closed loop state may be inadvertently released before the attachment to the base, it is possible to reliably prevent the rotating member from falling off the base.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
When the first and second ring forming bodies form a closed loop, the protrusion in the present invention falls off in a state in which a repulsive force smaller than the force for maintaining the closed loop state is applied to the second ring forming body. It is preferable to provide it so as to engage with the prevention part. With this configuration, when the closed loop state formed by the first and second ring forming bodies is released, the second ring forming body is separated from the first ring forming body by the repulsive force. Therefore, the binding tool can be opened more quickly.
[0007]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0008]
FIG. 1 is a schematic perspective view of a main part of a binder to which a binding tool according to this embodiment is fixed, and FIG. 2 is an exploded perspective view of the binding tool. In these drawings, the binder 10 includes a cover body 11 and a binding tool 12 fixed to the inner surface of the cover body 11. The front cover body 11 includes a spine cover 14 that determines the binding width, and a front cover 15 and a back cover 16 that are continuous on both sides of the spine cover 14 in the short width direction.
[0009]
The binding tool 12 is a long strip-shaped base 18 fixed to the inner surface of the back cover 16, and is rotatably attached to the back side of the base 18, while the base 18 is fixed to the binder 10 and the back cover 14 side. And a rotating member 19 disposed on the surface.
[0010]
As shown in FIGS. 3 to 6, the base 18 is an inclined surface portion that is inclined substantially linearly downward from the rotating member 19 side toward the other end side in the short width direction, that is, the right end portion in FIG. 21 and a shaft-shaped first ring forming body 23 erected at two positions in the longitudinal direction (the direction orthogonal to the plane of the paper in FIG. 3) at the position of the lower edge 21A side which is the lower part of the inclined surface portion 21, A bearing portion 24 provided along the longitudinal direction on the high portion edge 21 </ b> B side, which is a high portion of the surface portion 21, and a partial connection to the bearing portion 24, restricting the rotating member 19 from dropping from the base 18. And a side surface portion 28 (see FIGS. 5 and 6) having a substantially triangular shape in plan view connected to both ends in the longitudinal direction of the inclined surface portion 21. Yes.
[0011]
The inclined surface portion 21 is disposed so as to be gradually inclined downward from the back cover 14 side toward the free end side of the back cover 16 in a state where the base 18 is fixed to the back cover 16, and is positioned on the free end side. The lower edge 21 </ b> A is a gently arcuate curved surface that is continuous with the inner surface of the back cover 16.
[0012]
The first ring forming body 23 stands substantially vertically at a position slightly inward of the lower edge 21A, and the tip 23A side is slightly curved toward the higher edge 21B. It has become. As shown in FIG. 2, a first notch surface portion 29 is provided on the tip 23 </ b> A side, and a receiving groove 30 is formed in the notch surface portion 29. Here, the 1st ring formation bodies 23 and 23 are symmetrically arranged so that each receiving slot 30 and 30 may face each other.
[0013]
The bearing portion 24 includes a curved end surface 34 that extends downward from the high portion edge 21B while bulging outward on the left side in FIG. 3, and a partition piece 35 that extends downward from the high portion edge 21B. A tunnel-shaped internal space 36 is formed in a region surrounded by the curved end surface 34 and the partition piece 35. The internal space 36 extends along the longitudinal direction of the base 18, and the bottom side is open over substantially the entire region, and the rotating member 19 is mounted from the open portion. Further, as shown in FIGS. 5 and 6, notches 27 and 27 formed in the curved end surface 34 are connected to the left and right ends of the internal space 36 in the figure.
[0014]
As shown in FIG. 4, the stepped portion 26 is provided at two locations in the longitudinal direction inside the base 18, and continues to a region in which the upper part of the partition piece 35 of the bearing portion 24 is partially cut out. . That is, the step portion 26 is inclined by extending substantially horizontally from the upper end side of the notched partition piece 35 toward the lower end edge 21A side, and extending substantially vertically from the end portion of the horizontal plane portion 38. It is formed by a vertical surface portion 39 continuous with the back surface of the surface portion 21. Note that through holes 41, 41 are formed in the portion of the inclined surface portion 21 that is located above the horizontal surface portions 38, 38.
[0015]
As shown in FIG. 1 and FIG. 2, the side surface portions 28, 28 have a shape that gradually inclines downward from both longitudinal end edges of the inclined surface portion 21 toward the outside. Through holes 44 of the rivets 43 are formed one by one in the regions of the side surface portions 28 and 28, so that the binding tool 12 is fixed to the back cover 16 by the rivets 43 passed through the through holes 44. It has become.
[0016]
As shown in FIGS. 2 to 4, the rotating member 19 includes a rotating shaft 46 that is rotatably received by the bearing portion 24 of the base 18, and a second shaft that is held at both axial ends of the rotating shaft 46. Ring forming bodies 48 and 48, and protrusions 49 and 49 oriented in a direction substantially perpendicular to the axial direction from two locations on the outer peripheral portion of the rotating shaft 46. The rotation shaft 46 is set to an axial length substantially corresponding to the longitudinal width of the internal space 36 in the bearing portion 24, and the base portions of the second ring forming bodies 48, 48 are formed in the notches 27, 27 connected to the internal space 36. The area can be accepted.
[0017]
The second ring forming bodies 48, 48 are provided with substantially the same separation width as the first ring forming bodies 23, 23, and are directed in a direction substantially orthogonal to the axial direction of the rotating shaft 46. In a state of being mounted on the bearing portion 24, a closed loop can be formed between the base 18 and the first ring forming bodies 23, 23. These second ring forming bodies 48 have a hook-like shape in which the tip 48A side is curved downward, and a longitudinal shaft portion 51 extending upward in FIG. 2 in a state where the base region is slightly curved, The traverse shaft portion 51 is connected to the upper portion of the longitudinal shaft portion 51 in the figure and extends while curving downward C-shaped. On the distal end side of the transverse shaft portion 52, a second notch surface portion 56 having a shape capable of engaging with the first notch surface portion 29 provided on the distal end 23A side of the first ring forming body 23 is provided. The second cutout surface portion 56 is formed with a protrusion 58 that can be fitted into the receiving groove 30 formed in the first cutout surface portion 29. Therefore, the second ring forming bodies 48 and 48 are symmetrically arranged so that the protrusions 58 and 58 are opposite to each other corresponding to the respective receiving grooves 30 and 30. Here, the engagement of the first and second ring forming bodies 23 and 48 and the release thereof are performed by grasping the tips 48A and 48A side of the second ring forming bodies 48 and 48 with fingers, and the tips 48A and 48A side. A well-known structure is employed in which the two are displaced in a direction approaching each other. In the present embodiment, recesses 60, 60 are provided in the outer peripheral surface regions of the transverse shaft portions 52, 52 facing each other so as to facilitate displacement of the respective tips 48A, 48A. Further, the engagement structure between the first and second ring forming bodies 23 and 48 is not limited to the above-described structure, and various structures are employed as long as the butt state or the engagement state can be maintained. be able to.
[0018]
The protrusion 49 has a wedge shape oriented in a direction substantially orthogonal to the rotation shaft 46, and when the first and second ring forming bodies 23 and 48 are engaged to form a closed loop state, the protrusion 49 is formed on the step portion 26 of the base 18. Engagement is possible. That is, the protrusion 49 includes a contact surface 62 that can contact the horizontal surface portion 38, a tip surface 63 that is connected to the right end in FIG. 4 and a side end surface 64 that is located on both sides of the contact surface 62 in the direction perpendicular to the paper surface in FIG. (See FIG. 2) and an upper surface 65 extending between the upper end of the tip surface 63 and the outer peripheral surface of the rotating shaft 46. The contact surface 62 is provided so as to be in surface contact with the horizontal surface portion 38 of the step portion 26 at a position where the second ring forming body 48 is engaged with the first ring forming body 23, whereby the binding tool 12 is attached to the back cover 16. The second ring forming body 48 is restricted from falling off from the back side of the base 18 at a stage before being fixed to the base 18. The shape of the protrusion 49 is not limited to the above-described shape, and various shapes can be adopted as long as the rotating member 19 can engage with the step portion 26 so as not to drop off from the back side of the base 18. .
[0019]
In the above configuration, when the binding tool 12 is assembled, the rotating shaft 46 is mounted on the bearing portion 24 from the back side of the base 18 in a state where the rotating member 19 is in the direction indicated by the two-dot chain line in FIG. Next, while rotating the second ring forming body 48 together with the rotating shaft 46 in the clockwise direction in FIG. 7, the tip 48 </ b> A side is moved to the tip 23 </ b> A side of the first ring forming body 23. At this time, the hole 41 provided in the inclined surface portion 21 serves as a relief portion on the tip side of the protrusion 49. Then, the tips 48A, 48A of the second ring forming bodies 48, 48 are brought close to the tips 23A, 23A of the first ring forming bodies 23, 23, and the second ring forming bodies 48, 48 are formed as the first ring forming. Engage with the body 23,23. In this state, as shown in FIG. 4, the protrusion 49 is in contact with the horizontal surface portion 38 of the step portion 26.
[0020]
Therefore, according to such an embodiment, if the first and second ring forming bodies 23 and 48 are brought into a closed loop state before the binding tool 12 is attached to the back cover 16, the closed loop state is not achieved. Even if the release is made, the engagement between the step portion 26 and the protrusion 49 prevents the rotating member 19 from falling off from the back side of the base 18. For this reason, the assembled state of the first and second ring forming bodies 23 and 48 is released even if the rotating member 19 is not fixed to the base 18 with another member such as a tape before the back cover 16 is assembled. Thus, an extra work before the attachment to the back cover 16 can be eliminated.
[0021]
Further, since the binding tool 12 is provided with the inclined surface portion 21 on the base 18, as shown in FIG. 8, in the state where the paper P is bound into the binding tool 12 attached to the binder 10. The uppermost surface can be smoothly inclined toward the free end side of the back cover 16, and it is possible to make it easier to write characters or the like on the paper P portion around the first ring forming bodies 23, 23.
[0022]
In the above embodiment, the projection 49 of the rotating member 19 and the step portion 26 of the base 18 are engaged with each other in the closed loop state where the first and second ring forming bodies 23 and 48 are engaged. The invention is not limited to this, and as shown in FIG. 9, the protrusion 49 of the rotating member 19 and the step portion 26 of the base 18 are engaged before the first and second ring forming bodies 23 and 48 are engaged. It is good also as a structure which can give the repulsive force smaller than the force which maintains the said closed loop state, ie, the force which each ring formation body 23 and 48 engages, to the 2nd ring formation body 48. That is, the protrusion 49 in this case is provided so as to be able to engage with the stepped portion 26 while being bent upward in the closed loop state, and when the closed loop state is released, the restoring force of the protrusion 49 causes the level of the stepped portion 26 to be horizontal. A reaction force is generated on the surface portion 38, and the second ring forming body 48 can be automatically rotated counterclockwise in FIG. With such a structure, the opening operation of the second ring forming body 48 can be performed more smoothly.
[0023]
【The invention's effect】
As described above, according to the present invention, the rotating member having the second ring forming body is provided with the rotating shaft that holds the second ring forming body and the axial direction of the rotating shaft from the outer periphery thereof. And a drop prevention portion that engages with the protrusion so as to restrict the drop of the rotating member from the base in a state where the rotation shaft is combined with the base. It is possible to reliably prevent the rotating member from falling off the base before being attached to the binder or the like.
[0024]
Further, when the first and second ring forming bodies form a closed loop, the protrusion is prevented from dropping in a state in which a repulsive force smaller than a force for maintaining the closed loop state is applied to the second ring forming body. When the closed loop state is released, the second ring forming body moves away from the first ring forming body by the repulsive force of the second ring forming body. The binding tool can be opened quickly.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an essential part showing a state in which a binding tool according to an embodiment is fixed to a binder.
FIG. 2 is an exploded perspective view of the binding tool.
3 is an enlarged sectional view taken along line AA in FIG.
4 is an enlarged sectional view taken along line BB in FIG.
FIG. 5 is a plan view of the binding tool.
FIG. 6 is a bottom view of the binding tool.
FIG. 7 is a cross-sectional view for explaining a procedure for assembling the binding tool.
FIG. 8 is a side view for explaining an effect of the embodiment.
9 is a cross-sectional view seen from the same position as FIG. 4 showing a modification of the present embodiment.
[Explanation of symbols]
12 Binding tool 18 Base 19 Rotating member 23 First ring forming body 26 Step portion (drop-off prevention portion)
46 Rotating shaft 48 Second ring forming body 49 Projection

Claims (2)

A binding tool comprising: a base having a first ring forming body; and a rotating member rotatably attached to the base and having a second ring forming body capable of forming a closed loop together with the first ring forming body. In
The rotating member includes a rotating shaft that holds the second ring forming body, and a protrusion that is directed from an outer peripheral portion of the rotating shaft in a direction substantially orthogonal to the axial direction of the rotating shaft. A binding tool comprising a drop-off preventing portion that engages with the protrusion so as to restrict the drop-off of the rotating member from the base in a state where the rotating shaft is combined with the base. When the first and second ring forming bodies form a closed loop, the protrusion provides a drop-off preventing portion in a state in which a repulsive force smaller than a force for maintaining the closed loop state is applied to the second ring forming body. The binding tool according to claim 1, wherein the binding tool is engaged with each other.

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