JP2000158866A - Binding implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a binding implement lightweight and at the same time, permit incineration treatment thereof and reduce a manufacturing cost. SOLUTION: An operating member 15 is arranged on both sides, in the short width direction of an almost rectangular base 13. These operating members 15 are arranged in an approachable separable manner each other and at the same time, are structurally constituted integrally with a shaft part in the longitudinal direction of the base 13. Further, on this shaft part, a binding member 16 is provided which is freely attachable/detachable by the displacement of an axial position of the shaft part. The base 13, the operating members 15 and the binding member 16 each are formed of a synthetic resin.

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 formed of synthetic resin as a molding material.

[0002]

2. Description of the Related Art Conventionally, binders having a binding device on the inner surface side of a spine or a back cover are commercially available. A binding tool used for the binders includes a single-opening type in which one binding plate can be disengaged from an engaging portion formed on the base, and a pair of engaging portions formed on both sides of the base. 2. Description of the Related Art There are double-sided binding devices and the like in which binding plates can be disengaged.

As a double-sided binding device, for example,
As shown in JP-A-8-72457, a base fixed to a spine, a plurality of engaging portions formed on both sides of the base, and a base fixed to an upper surface side of the base and the base. A pair of cases each having a case forming a predetermined space therebetween, and a hinge rod which is provided with a hinge portion which is detachably engageable with each of the engagement portions of the base, and which is provided with a binding rod which can be fitted by extending in a direction facing each other. And a synthetic resin operating member housed in the space between the base and the case and capable of releasing the mutual engagement between the engaging portion and the hinge portion. According to this binding device, since the mutual engagement between each binding plate and the base can be arbitrarily released, there is an advantage that the addition and removal of documents can be efficiently performed.

[0004]

However, in such a binding device, the operating member is formed of a synthetic resin material, but the other components are formed of a metal material. Is heavy. In addition, the binding rod provided on the binding plate has a configuration in which a shaft separate from the binding plate is attached later, so that the number of components as a whole also increases, which leads to an inconvenience of increasing manufacturing costs. Furthermore, the three-dimensional shape of the base is extremely complicated, and the number of processing steps is increased, which makes the base unsuitable for manufacturing inexpensive binding devices.

[0005] Further, in the case of a binder employing a metal binding device, since the cover is usually made of a combustible material, there is a problem in that the binder is discarded together with the cover without separating the binding device. In other words, a binder with a metal binding device cannot be incinerated without separating the binding device from the cover, so it is necessary to thoroughly separate and discard it. Neglecting to separate waste has caused problems in garbage disposal.

[0006]

SUMMARY OF THE INVENTION The present invention has been devised in view of such inconvenience, and its object is to form all the components constituting the binding device with synthetic resin and to reduce the number of components. It is an object of the present invention to provide a binding device that can be manufactured at low cost.

Another object of the present invention is to enable incineration of a binding device so that the binding device can be discarded without being separated from a cover.

[0008]

In order to achieve the above object, a binding device according to the present invention comprises a base fixed to an inner surface of a cover and a base parallel to the base so as to be mutually separated and approachable at symmetrical positions on both sides of the base. And an operating member including a shaft portion which is normally urged in a direction to be separated from the operating member, and is detachably provided on the shaft portion by being supported by the shaft portion and displacing the axis position of the shaft portion. In a binding device provided with a binding member, the base, the operation member, and the binding member are each formed of a synthetic resin.
With this configuration, the weight as a whole can be greatly reduced, and the manufacturing cost can be significantly reduced by integrally molding each component with a mold.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the base is provided with a substantially rectangular base surface, bearing portions provided on both sides in the short width direction of the base surface, and a base provided on the back side of the base surface. It is preferable to adopt a configuration in which a longitudinal direction of the surface portion and a plurality of rib pieces arranged in a direction perpendicular to the longitudinal direction are integrally provided. Thereby, even in the case of a resin base, there is no problem in terms of strength brittleness. At this time, the operating member is integrally provided with a forked branch spring connected to the shaft, and each tip of the forked branch spring abuts on a rib piece disposed along the longitudinal direction of the base to form the shaft. Are preferably urged in directions away from each other. With such a configuration, the elasticity of the spring can be exhibited using the rib pieces.

[0010] The binding member includes a pair of binding plates provided with engaging portions that are detachable from the respective shaft portions. The binding members extend in relative directions and can be fitted to each other. The binding rod is integrally molded. The integral molding of the binding plate and the binding rod eliminates the need for the process of fixing a separate binding rod to the binding plate as in the past, and this also reduces the number of parts and simplifies the manufacturing process. It can be achieved at the same time.

The synthetic resin as the molding material in the present invention can be exemplified by resins such as ABS and polycarbonate which are excellent in heat resistance and impact resistance. A binding tool formed of such a resin material can be incinerated in a garbage incineration plant, for example, without being separated from a cover forming a binder.

[0012]

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. In this specification, “left and right” are used with reference to the short width direction of the spine shown in FIG. 1 and “up and down” are used with reference to the longitudinal direction of the spine unless otherwise specified. Can be

FIG. 1 is a schematic perspective view of a binding device according to this embodiment. In this figure, the binding device 10 is
All components are molded from ABS or polycarbonate. The binding device 10 includes a base 13 disposed on an inner surface of a spine 11 forming a part of a binder,
It is composed of a pair of operation members 15 arranged at symmetrical positions on the left and right sides of the base 13 and a binding member 16 supported by the operation members 15.

As shown in FIGS. 1 and 2, the base 13 has a base surface portion 20 having a substantially rectangular shape in a plan view, and a plurality of bases 20 provided on both sides of the base surface portion 20 in the left-right direction, that is, in the short width direction. The bearing unit 21 is provided. The base surface portion 20 is in contact with two vertical regions of the spine 11 and has a pair of fixing surfaces 20 each having a hole 23 through which a fixing tool such as a resin rivet (not shown) is inserted.
A, 20A and a center plane 20C whose plane position is set at a slightly higher position via an inclined plane 20B between these fixed planes 20A.
Are formed. Between the inclined surfaces 20B, 20B on the back surface side of the central surface 20C, three vertical rib pieces 25 arranged substantially parallel to each other along the vertical direction of the central surface 20C, that is, along the longitudinal direction, and these vertical ribs 25 Three horizontal rib pieces 2 arranged in a direction substantially perpendicular to the direction in which the pieces 25 extend.
6 are provided so that the overall strength of the center plane 20C is maintained.

As shown in FIG. 3, each of the left and right bearing portions 21 is formed by projecting outwardly at four locations at both ends in the short width direction of the central surface 20C. These bearing portions 21 are provided with two central bearing portions 21A, 21A provided on each side of the operating member 15 so as to support the central portion region.
And outer bearing portions 21B, 21B located at the boundary between the central surface 20C and the inclined surface 20B. The central bearing portions 21A, 21A have a U-shaped side end surface shape, and the open side of the U-shape is directed into the central surface 20C and faces the open side of the central bearing portion 21A located on the opposite side of the central surface 20C. It is provided as follows. The lower end sides of the central bearing portions 21A in FIG. 3 are connected to each other by connecting pieces 28, and the central area of the operating member 15 is provided in the gap between the connecting pieces 28 and the central surface 20C. Has become acceptable. On the other hand, the outer bearing portions 21B, 21
As shown in FIG. 3, B is provided in the shape of an L-shaped side end surface that opens downward, and each of these outer bearing portions 21B
The distal end side of a shaft portion of the operation member 15 described later is positioned in the region.

At the position adjacent to the outer bearing portion 21B, upright portions 30 are continuously provided on the left and right sides of the fixed surface 20A, and the lower end side is a free end on the inner surface side of each of the upright portions 30A. Each of the nail pieces 32 is formed.

As shown in FIG. 3, the operating member 15 includes an operating portion main body 35 formed of a horizontally long plate-like block received in a gap between the central surface 20C and the connecting piece portion 28.
A pair of shafts 36 protruded from both ends in the longitudinal direction of the operation section main body 35 by integral molding;
And a resin cover 39 provided on the opposite side of the forked branch spring 37 from the center of the inner end.

The operating member 15 has an operating portion main body 35 disposed between the center plane 20C and the connecting piece 28. Also,
Each base end side of the shaft portion 36 is supported so that it is located in the central bearing portion 20A and the front end side is located below the outer bearing portion 20B region. At this time, as shown in FIG. 2, each tip of the forked bifurcated spring 37 is maintained at a position where it comes into contact with the outer side surface of the vertical rib piece 25 located on both the left and right sides. When a pressing force from the outside to the inside is applied to the cover 39, the cover 39 is elastically deformed so as to extend straight, and when the pressing force is released, the cover 39 returns to the initial bow shape. Accordingly, the left and right shaft portions 36 are displaced in the direction of the axis line in a direction in which the left and right shaft portions 36 are separated and approached together with the operation portion main body 35 by the pressing operation.

The binding member 16 includes a pair of left and right binding plates 40 and 41 formed in a symmetrical shape with each other, and a pipe-like binding rod 42 projecting from the inner surface of one of the binding plates 40 by integral molding. And an axial binding rod 43 protruded from the inner surface of the other binding plate 41 by integral molding. Here, only the binding plate 40 on one side will be described, and the description of the same or equivalent components will be omitted by using the same reference numerals.

The binding plate 40 is provided with a slender strip-shaped main body piece 45 extending in the longitudinal direction of the base 13, and is continuously provided inwardly from the lower ends of both sides in the longitudinal direction of the main body piece 45. An outer protruding piece 46 which can be positioned on the inner surface side of the upright portion 30;
7 and a notch 48 formed between the inner protruding pieces 47. Here, the inner protrusion 4
The lower ends of the members 7 and 47 are curved so as to dive below the outer peripheral lower surface of the shaft 36, and when the binding plate 40 is supported by the shaft 36, unless the operating member 15 is pressed. It is provided so that it does not fall off.

Note that, as shown in FIG.
In a state in which 5 is engaged with and supported by the shaft portion 36, the outer surface of the outer projecting piece 46 can be brought into contact with the standing portion 30 so as to press the free end side of the claw piece 32.

Next, a method of using the binding tool in the present embodiment will be described.

First, it is assumed that the binding device 10 is fixed to the spine 11 via rivets (not shown) or the like. Here, when binding a document (not shown), a fingertip may be applied to the cover 39 of one of the operation members 15 and pushed. By this pushing, the shaft portion 36 is displaced in the direction of the axis approaching the opposing shaft portion 36, so that the engagement between the shaft portion 36 and the inner protruding pieces 47 of the binding plates 40 and 41 is released. It will be. At the moment when this engagement is released, the claw pieces 3 pressed by the outer
2 is resiliently restored, whereby the binding plate 4
0, 41 will float from the shaft portion 36 with a certain urging force. Thereafter, the binding plate 40 or 41 is
6 and moving the binding plates 40 and 41 in a direction away from each other, the binding rods 4 fitted in the axial direction.
The mutual engagement of the two 43 is released. Note that the binding plates 40 and 41 may be simultaneously removed from the shaft 36 by pushing in the two operation members 15 at the same time.

Therefore, according to such an embodiment, one base 13, a pair of operating members 15 having the same structure, and a pair of binding members 16 having only different shapes of the binding rods are respectively formed of synthetic resin. Binding tool 1 by integrally molding
Since 0 can be formed, the number of parts is extremely reduced to four, and the effect that the manufacturing cost can be greatly suppressed as compared with the conventional structure is obtained. In addition, since ABS or polycarbonate is used as the molding material, there is no inconvenience in burning with the cover sheet constituting the binder, and there is no need for any separation at the time of disposal.

In the above-described embodiment, the operating member 15 is not limited to the one having the cover 39, but may be configured without the cover. The binding member 16 has a structure in which the left and right binding plates 40 and 41 are detachable from the shaft portion 36, and is hinged to the shaft portion so that one of the binding plate sides is not detachable. The other binding plate side is the shaft portion 36
It may be a one-sided type that can be attached to and detached from.

[0026]

As described above, according to the present invention,
Since the base, the operating member, and the binding member are each formed of synthetic resin, the overall weight can be greatly reduced, and the manufacturing cost can be significantly reduced by integrally molding each component using a mold. It becomes possible.

According to the structure in which a plurality of rib pieces are integrally formed on the back surface side of the base, even if a resin base is employed, there is no problem in terms of strength brittleness. A binding tool that can withstand use can be provided. Furthermore, since the tip of the forked bifurcated spring, which constitutes a part of the operating member, abuts against the rib piece and is urged in the direction to separate the shaft, a structure that effectively uses the reinforcing rib piece is adopted. Also from this point, it is possible to provide a binding device at a low cost while avoiding a complicated structure.

Further, the binding plate forming the binding member is
Since it is constituted by a molded article integrally provided with binding rods that fit together, a step of fixing a separate binding rod to the binding plate is not required.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the entire configuration of a binding device according to an embodiment.

FIG. 2 is a schematic perspective view of the binding device as viewed from the back side.

FIG. 3 is an exploded perspective view of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Binding tool 13 Base 15 Operation member 16 Binding member 21 Bearing part 25 Vertical rib piece 26 Horizontal rib piece 36 Shaft part 37 Bifurcated branch spring 40 Binding plate 41 Binding plate 47 Inner projection (engaging part)

Claims (4)

[Claims] 1. A base fixed to the inner surface side of a cover, and a shaft portion which is supported substantially parallel to each other at positions symmetrical on both sides of the base so as to be able to be separated from each other and which is normally urged to be separated from each other. A binding member supported by the shaft portion and a binding member detachably provided on the shaft portion by displacement of an axial position of the shaft portion, wherein the base, the operation member, and the binding member are A binding device characterized by being formed of a synthetic resin. 2. The base according to claim 1, wherein the base has a substantially rectangular base surface,
Bearing portions provided on both sides in the short width direction of the base surface portion, and a plurality of rib pieces provided on the back surface side of the base surface portion and arranged in the longitudinal direction of the base surface portion and in a direction orthogonal thereto. The binding device according to claim 1, wherein the binding device is provided integrally. 3. The operation member integrally includes a forked branch spring connected to the shaft portion, and each tip of the forked branch spring abuts on a rib piece disposed along a longitudinal direction of the base to form the forked branch spring. The binding device according to claim 2, wherein the shaft portions are urged in directions away from each other. 4. The binding member includes a pair of binding plates provided with detachable engaging portions on each of the shaft portions, and the binding plates extend in relative directions and can be fitted to each other. 4. The rod is formed as one piece.
The binding device described.