JPH0120143Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a guide pin protruding from the lower part of the binding ring loosely fitted into a guide groove provided on a slide plate, and the binding ring is moved in the left and right direction by operating the slide plate.
The present invention relates to a binder binding device configured to open and close.

Conventionally, there have been many binding tools for binders that allow paper sheets to be bound or taken out freely by engaging a guide pin and a guide groove and operating a slide plate to open and close the binding ring. All conventional binding devices require a large number of components and have complicated shapes, making the overall structure of the binding device complicated and difficult to assemble, and the operation is cumbersome. However, this method had disadvantages such as high manufacturing costs.

The present invention has been devised in view of the above-mentioned drawbacks of the prior art, in order to provide a binder binding tool that has a simple structure and is easy to assemble and operate.

That is, the binding tool of the present invention has side walls erected on both sides in the longitudinal direction of the base plate attached to the cover, and notches are provided in each side wall at regular intervals and at positions where the left and right sides coincide. Half-split binding rings in the form of a ring that can be opened and closed freely face each other on the left and right sides, and the lower ends of these binding rings are connected in rows on the left and right sides by connecting pieces through protrusions, respectively. Connecting pieces are interposed inside the side wall, guide pins are provided to protrude from each connecting piece in a symmetrical manner, and a slide piece is slidably inserted into the base plate on the connecting pieces. The slide piece is configured to have an eight-shaped guide groove in its longitudinal direction so that the guide pin can be loosely fitted therein, so that the binding ring can be opened and closed easily by operating the slide piece. be.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes an elongated base plate fixed to the center of the cover, and side walls 2, 2 are erected at both ends of the base plate 1 in the longitudinal direction, and each side wall 2, 2 is provided with regular intervals. In addition, six notches 3 are provided at positions where the left and right sides coincide. Reference numerals 4a and 4b are binding rings in which a pair of left and right facing rings are each formed in a semicircular shape, and a concave portion 5 is provided on the upper end vertical surface of the binding ring 4a, and a recess 5 is provided on the upper end vertical surface of the other binding ring 4b. A convex portion 6 that fits into the concave portion 5 is provided on the surface. In the embodiment, these binding rings 4a or 4b are arranged in sets of three, and their lower ends are fixed onto protruding pieces 8 that protrude outward from connecting pieces 7 made of narrow plate pieces. Furthermore, each binding ring 4a, 4 is attached to these connecting pieces 7.
A guide pin 9 is provided protruding near the lower end of b. Each of these connecting pieces 7 is placed inside the side wall 2 of the base plate 1 with each protruding piece 8 facing the notch 3, and both longitudinal ends thereof are provided with protrusions 10a protruding from the base plate 1. ，
10b. Further, the base plate 1 has rivet holes 11 at the center and at both ends for fixing it to the cover.

Reference numeral 12 denotes a slide piece that is guided by the side walls 2, 2 and slidably inserted into the base plate 1, and the guide groove 13 into which the guide pin 9 is loosely fitted is tilted symmetrically so as to form an eight-shape in the longitudinal direction. A notch 14 is provided at the outer side edge of each guide groove 13. Further, the slide piece 12 is provided with a knob 16 at an end protruding outward from the upper and lower end walls 15 of the base plate 1, and the protrusion 16 is provided at the tip of the lower surface.
In addition to providing a stopper 17 for blocking the 0a,
A protrusion 1 is located on the inside of the end wall 15 on the outside of the lower surface.
There are 8. The inner corner of the upper end of the end wall 15 is formed into a curved surface 18' so that the projection 18 can easily pass over it. A cover piece 19 is fixed to the upper end of the side walls 2, 2, and notches 20 are provided on both side edges so as not to interfere with the closing operation of the binding rings 4a, 4b.

In the binder binding tool of the present invention constructed as described above, when the slide piece 12 is pushed into the base plate 1 as shown in FIG. is located on the narrower side of the opening and closes the opposing binding rings 4a and 4b,
In this state, by pulling the knob 16 outward, the slide piece 12 slides outward in the longitudinal direction of the base plate 1 as shown in FIG. The guide pins 9, 9 located on the narrow side move to the widening side of the guide groove 13, and together with each connecting piece 7, each binding ring 4a, 4b is pushed outward in the left and right direction, so that the opposing binding rings 4a,
Open the tip of 4b. (See Fig. 6) By pushing the slide piece 12 inward in this state, the state shown in Fig. 3 is achieved, and each binding ring 4
As shown in FIG. 5, the protrusions 6 fit into the concave portions 5 at the tips of a and 4b, and the closed state is reliably maintained without creating any gaps.

As described above, the binding rings 4a and 4b are opened and closed as the slide piece 12 slides.
Since each binding ring 4a, 4b is moved in the left-right direction via the guide pins 9, 9 which are loosely fitted into the eight-shaped guide groove 13 provided in the 8-shaped guide groove 13 provided in the 8-shaped guide groove 13, no load is applied locally, and the entire operation is performed. Therefore, even with a small force, the opening and closing operations can be performed smoothly and without difficulty.

Further, in the illustrated embodiment, the connecting piece 7 and the sliding piece 12 are divided at the center of the base plate 1, and each binding ring 4a, 4b is moved by pulling the knob 16 provided at the outer end of each sliding piece 12 outward. By opening the binding rings 4a and 4b and pushing the knobs 16 inwardly, the binding rings 4a and 4b in the open state are closed.
The present invention is not limited to the structure in which the connecting piece 7 and the sliding piece 12 are formed in one piece over the entire length of the base plate 1.

As mentioned above, the binder binding tool of the present invention not only does not require fixed pieces or movable pieces with complex shapes unlike conventional ones, but the structure of each member is shown in exploded view in Figure 2. It is very simple and can be easily manufactured, for example, by injection molding of synthetic resin, and can be easily assembled. Furthermore, when in use, each binding ring is opened and closed in the left-right direction by moving the guide pin to the left and right through the eight-shaped guide groove provided in the slide piece, so that it is not subject to localized unreasonable loads. It has the advantage that it can be opened and closed smoothly without any friction.

[Brief explanation of the drawing]

The figures relate to one embodiment of the present invention, and FIG. 1 is a perspective view, FIG. 2 is an exploded perspective view, and FIGS. 3 and 4 are plan views showing a part in cross section to explain the operation. FIG. 5 is a sectional view of the binding ring in a closed state, and FIG. 6 is a sectional view of the binding ring in an open state. 1... Base plate, 2, 2... Side wall, 3... Notch,
4a, 4b... Binding ring, 7... Connecting piece, 8... Projecting piece, 9... Guide pin, 12... Slide piece, 1
3...Guide groove.

Claims (1)

[Scope of utility model registration request] Side walls are erected on both sides in the longitudinal direction of the base plate to be fixed to the cover, and notches are provided in each side wall at regular intervals and at positions where the left and right sides coincide, and the left and right sides of each of the notches face each other so that they can be opened and closed freely. Half-split binding rings forming a ring shape are exposed, and the lower ends of these binding rings are connected in rows on the left and right by connecting pieces through protrusions, and each of the connecting pieces is interposed inside the side wall. At the same time, guide pins are protrudingly provided on each of the connecting pieces at symmetrical positions on the left and right, and a slide piece is slidably inserted into the base plate on the connecting piece, and the slide piece is shaped like a figure eight in its longitudinal direction. A binding tool for a binder, comprising a guide groove in which the guide pin is loosely fitted.