JP2000280676A - Binding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the opening and closing operations of a binding rod possible by operating the one end side of a slider and, at the same time, contrive to simplify the engaging structure for keeping and releasing a bound state. SOLUTION: Binding rods 20 are rotatably provided on both the widthwise end sides of a base 17. In addition, a slider 18, which keeps and releases the bound state of binding rods 20, is provided between the base 17 and a rear cover 13. The slider 18 is equipped with both the widthwise side edge faces and notched parts, which are formed by partially notching the side edge faces. On the other hand, engaging projected parts are provided at the respective basic parts of the binding rods 20. The engaging projected parts are kept under bound states by being controlled their rotations being abutted against the side edge faces. When the engaging projected parts is located in the notched parts by moving the slider 18, the rotations of the engaging projected parts towards the directions for releasing the bound states becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding device, and more particularly, to a binding device capable of opening and closing a binding rod with a simple operation.

[0002]

2. Description of the Related Art Conventionally, in a file, a binder or the like, a binding device is provided on an inner surface side of a cover. As a binding device of this type, an elongated piece-shaped base having one of two binding rods is connected to one end of the base in the longitudinal direction so as to be rotatable in a plane, and at the tip of the binding rod. 2. Description of the Related Art There is known a rotating member provided with another binding rod which is in contact with and forms a closed loop. In this type of binding device, the engaging members provided on the free end side of the rotating member are engaged with the ends of the base, so that the tips of the opposing binding rods abut against each other to be in a binding state. On the other hand, by releasing the engagement by the engagement member, the binding rods can be separated from each other.

However, in such a binding device, the width of the binding rod on the fulcrum side of the rotating member is smaller than the width of the binding rod on the free end side. There is a disadvantage that it is difficult to insert.

Therefore, Japanese Patent Publication No. Hei 8-5271 discloses that
A configuration is disclosed in which a slider is provided movably in a base, and a part of the slider and a base side of the binding rod can be disengaged from each other so that the entire binding rod can be largely opened and closed.

[0005]

However, the binding device disclosed in Japanese Patent Publication No. 8-5271 has a structure in which an engagement piece that engages with the base side of the binding device rises from the surface of the slider. As a result, the engaging piece is exposed on the base surface, and not only the appearance appearance is not good, but also the end of the document bound to the binding rod is caught by the engaging piece and partially bent. Causes inconveniences such as

[0006]

SUMMARY OF THE INVENTION The present invention has been devised in view of such inconveniences. It is an object of the present invention to enable a large opening / closing operation of a whole binding rod by operating a slider, and to provide a slider and a binding rod. It is an object of the present invention to provide a binding tool that can have a simple engagement structure in which an engagement portion with the base does not appear on the base surface.

[0007]

In order to achieve the above object, a binding device according to the present invention has a base fixed to the inner surface side of a cover and a rotatable support at the widthwise end of the base. A binding rod that forms a closed loop on the upper surface side of the base at a predetermined binding position, and a slider that is movably arranged between the base and the cover to maintain and release the binding state of the binding rod, The slider includes a plate-shaped flat portion, and in the plane of the flat portion, an engaging portion that engages with the base of the binding rod to maintain the binding state of the binding rod, and releases the binding state of the binding rod. And an open portion. With such a configuration, the engagement between the slider and the base of the binding rod is performed within the base, so that there is a possibility that the engagement portion may be caught on the end of the bound document. This can be prevented.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, an engaging portion is constituted by a side end surface of the flat portion, while an open portion is constituted by a cutout recess connected to the side end surface. It is preferable to adopt a configuration in which the binding rod is allowed to rotate in a direction in which the binding rod is opened when the binding rod is positioned in the notch recess from the engaged state. This makes it possible to provide a binding device that is capable of reciprocally engaging and disengaging the slider and the binding rod by slightly moving the slider, and that has an extremely simple engagement structure and excellent operability.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the binding device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic perspective view of a main part of a file to which the binding device according to the present embodiment is applied. In this figure, a file 10 is composed of a front cover 12 and a back cover 13 that are provided in the middle via a spine 11 and a back cover 1.
3 and a binding tool 15 fixed to the inner surface of the cartridge 3. The binding device 15 is located within a gap formed between the back cover 13 and the base 17, and is moved by a predetermined amount along the longitudinal direction of the base 17. Slider 18 provided to be possible
And a pair of right and left binding rods 20 arranged on both ends of the base 17 in the short width direction, respectively.

The base 17 is provided in the form of a strip slightly shorter than the length of the back cover 13 in the up-down direction, and the back surface of the base 17 is, as shown in FIG.
Is formed in a shape provided with a concave portion 23 that forms the gap with respect to the inner surface of the substrate. At both ends in the short width direction of the base 17, bearing portions 25 which bulge in an arc shape and whose leading end substantially abuts the inner surface of the back cover 13 are integrally connected, respectively.
Notch holes 26 are formed at a plurality of positions in the longitudinal direction of the bearing portion 25. The binding rod 20 is provided in each of the left and right bearing portions 25.
Are integrally rotatably received, and the binding rod 20 is provided so as to protrude upward through the notch hole 26.

The slider 18 is, as shown in FIG.
The flat portion 30 is accommodated in the concave portion 23, and an operating portion 31 is provided on the near side of the flat portion 30 in the drawing and is exposed at one longitudinal end of the base 17. In the plane of the plane portion 30, a plurality of cutout recesses 33 are formed on both end surfaces 32 in the short width direction.
These notch recesses 33 have a notch inclined surface 33A located on the operation unit 31 side, a notch bottom surface 33B connected to the inner end of the notch inclined surface 33A, and a notch surface oriented substantially vertically at a relative position of the notch inclined surface 33A. And a notched vertical surface 33C. FIG. 2 shows a region of the slider 18 on the operation unit 31 side.
Notch 3 at each of two places on the opposite side (not shown)
3 are provided.

The pair of right and left binding rods 20 are each
Although a large number are provided at equal intervals along the line 7, here, the configuration of one end side region of one shaft pin 27 is shown. As shown in FIG. 2, of the binding rods 20, two binding rods 20 on the end side of the shaft pin 27 are provided at their bases with engaging projections 35 located outside the outer peripheral position of the shaft pin 27. It is provided with. This engagement projection 35
As shown in FIG. 3, the binding rod 20 is kept in a binding state in a state of being in surface contact with the side end surface 32, while the binding rod 20 is freely rotated within the cutout recess 33 as shown in FIG. 4. Are provided in a relative shape that allows Engaging projection 3
The two binding rods 20 provided at each end are provided on both ends of each shaft pin 27, and the rotation is restricted at four positions on each side.

The slider 18 is provided between the base 17 and the base 17 via a tension spring (not shown) so as to be always pulled inward. Further, the shaft pin 27 is also wound with a coil spring (not shown). The binding rod 20 is normally biased in the opening direction.

In the above configuration, the binding rod 20 is in the binding state at the position where the engaging projection 35 of the binding rod 20 contacts the side end surface 32 of the slider 18. Here, when releasing the binding rod 20, the operating portion 31 of the slider 18 may be pinched and pulled out from the base 17. By this drawing, when the engaging projection 35 reaches the inside of the notch recess 33, the engaging projection 35 is disengaged, and thereby the binding rod 20 can be rotated in the opening direction. When the binding rod 20 is opened, the slider 18 is pulled into the base 17 by the above-described tension spring. In this state, when the binding rod 20 is rotated to return to the binding state, the engagement convex portion 35 becomes the notch inclined surface 33 </ b> A of the notch concave portion 33.
The operation unit 3
1 moves the slider 18 in a direction slightly protruding from the end of the base 17. When the inner surface of the engaging projection 35 is located on the outer surface of the side end surface 32 of the slider 18, the slider 18 is retracted again. Side end face 32 and engaging projection 35
Are engaged with each other, and the binding state is maintained again.

Therefore, according to such an embodiment, by slightly changing the shape of the slider 18 and the binding rod 20,
The opening and closing of the binding rod 20 can be enabled.

In the above embodiment, the binding rods 20 are supported on both sides of the base 17 in the short width direction and abut against each other. However, the present invention is not limited to this. It is also possible to support the binding rod on one side of the base 17 so that it can be opened and closed.

[0018]

As described above, according to the present invention,
An engaging portion that engages with the base portion of the binding rod to maintain the binding state in a binding state and an opening portion that releases the binding state of the binding rod are formed in the plane of the plane portion forming the slider. The engagement with the base of the binding rod is performed within the base, and it is possible to reliably prevent the engagement portion from being caught on the end of the bound document.

Further, since the engaging portion and the opening portion are respectively constituted by the side end surface of the slider and the cutout concave portion connected thereto, the shape of the slider is not complicated at all, and the base of the binding rod is not formed. A simple engagement structure can be achieved only by slightly changing the shape.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a main part of a file to which a binding device according to an embodiment is applied.

FIG. 2 is an exploded perspective view of a main part of the binding device.

FIG. 3 is an enlarged cross-sectional view taken along line AA of FIG. 1 showing a state where a binding rod is closed.

FIG. 4 is an enlarged cross-sectional view taken along line AA of FIG. 1 showing a state where a binding rod is opened.

[Explanation of symbols]

 Reference Signs List 13 back cover 15 binding tool 17 base 18 slider 20 binding rod 30 flat surface 32 side end surface (engaging portion) 33 notch concave portion (opening portion)

Claims (2)

[Claims] A base fixed to the inner surface of the cover; a binding rod rotatably supported at the widthwise end of the base and forming a closed loop on the upper surface of the base at a predetermined binding position; A slider that is movably disposed between the base and the cover to maintain and release the binding state of the binding rod; the slider includes a plate-shaped flat portion; A binding device comprising: an engagement portion that engages with a base portion of a binding rod to maintain a binding state of the binding rod; and an opening portion that releases the binding state of the binding rod. 2. The state in which the engaging portion is formed by a side end surface of a flat portion, while the opening portion is formed by a cutout recess connected to the side end surface, and a base of the binding rod is engaged with the side end surface. 2. The binding device according to claim 1, wherein rotation of the binding rod in a direction in which the binding rod is opened is allowed when the binding tool is positioned in the notch recess.