JPH0116630Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a fastener for filing an appropriate number of sheets of paper of various sizes such as A4 size or B5 size, or pieces of paper such as printed matter.

Conventionally, as a method of this kind, a flat string-like piece made of a thin metal plate or a thin synthetic resin is passed through a punch hole in a piece of paper to be filed, and both ends of the string-like piece are bent to hold down the paper piece. There are some that maintain the folded state using various means.

However, all of these have complicated structures in order to maintain the folded state, so the operation for holding the folded state and the operation for releasing the held state are troublesome, and the manufacturing cost is high.
There is also a method of filing by simply bending a metal piece, but this method tends to result in incomplete retention. In addition, if the metal piece is made thicker in order to strengthen the holding state in this method, it requires force to bend and stretch, making it inconvenient to handle and raising costs.

The purpose of the present invention is to improve such a conventional fastener for paper strips, and to improve the operation for maintaining the folded state of both ends of the string-like strip, and the operation for unraveling it as necessary. It is intended to be simpler than the previous one.

Another object is to simplify the structure for holding and unfolding the above-mentioned folded state, thereby reducing its manufacturing cost.

To explain this invention based on the attached drawings, bent pieces 2 and 3 each having a width b narrower than the width B of the substrate 1 are formed at both ends of a long and thin substrate 1 along its extension line.
are integrally formed so that the whole is in a straight line, and tongue pieces 5a and 5b that have been previously formed on both side edges of one bent piece 2 are bent toward the same side to form the inserted part 4, The size of this inserted portion 4 is made suitable for inserting and removing the other bent piece 3 from its tip, and is made so that it can easily pass through the punched hole 8.

Also, the edges on both sides of the base of each of the bent pieces 2 and 3 are slightly cut off and a soft pipe 6 made of synthetic resin or rubber is coated thereon as shown in FIGS. 1 and 3, or
Fit as shown in the diagram.

When filing a piece of paper using this fastener for paper pieces, as shown in FIG. Insert the bent pieces 2 and 3 in the opposite directions to form a point in the same figure as shown by chain lines 2a and 3a.
The bent pieces 2 and 3 are inserted in advance into the inserted portion 4 formed on one side of the
3b, the other bent piece 2 is securely bent from its base and at the same time the other bent piece 2 is inserted more deeply into the inserted portion 4 to complete the file.

Next, when unraveling this file, while pulling out the other bent piece 3 inserted into the inserted part 4, fold both bent pieces 2 and 3 along the two-dot chain lines 2b and 3.
Stand up from position b to the positions indicated by dashed-dotted lines 2a and 3a, and return to the positions of folded pieces 2 and 3 shown in solid lines.In this state, fold the paper piece 7 and pull it out from pieces 2 and 3, or insert another piece of paper (not shown). This is a new file for a piece of paper.

Therefore, according to the present invention, the structure for maintaining the bent state of both bent pieces 2 and 3 is simply to form the inserted portion 4 on one of the bent pieces 2, which is extremely simple compared to the conventional structure. It is simple, can be held securely, is easy to hold and release, and can be manufactured at low cost.

Also, a soft pipe 6 is installed at the base of both bent pieces 2 and 3.
Since the punch holes 8 of each piece of paper 7 passed through it do not directly touch the thin side edges of both folded pieces 2 and 3, but indirectly contact them through the soft pipe, each folded piece 2 , 3, there is no risk of tearing the punch hole 8 of the paper piece 7.

[Brief explanation of the drawing]

Figure 1 is a slope view of the embodiment of this proposal, and Figure 2 is a slope view of the embodiment of the present invention.
Fig. 3 is an enlarged sectional view of the - line part in Fig. 1; Fig. 4 is a perspective view showing one state of the fastener of the present invention in the process of use;
Figure 5 is a perspective view of the main parts of the fastener of the present invention viewed from below, Figure 6 is an enlarged cross-sectional view of the - line in Figure 5, and Figure 7 is an enlarged cross-section of the - line in Figure 6. 8 are sectional views of other embodiments of the portion shown in FIG. 3. DESCRIPTION OF SYMBOLS 1... Board, 2... Bending piece, 3... Bending piece, 4... Inserted part, 5... Tongue piece, 6... Tongue piece.

Claims (1)

[Claims for Utility Model Registration] 1. Bent parts 2 and 3 are linearly and integrally formed at both ends of a long and thin substrate 1, and an inserted portion 4 of the other bent piece 3 is formed on one side of one bent piece 2. A fastener for a piece of paper, characterized in that a soft pipe 6 is fitted to the base of the bent pieces 2 and 3. 2. The inserted portion 4 has tongue pieces 5a, 5 integrally formed on both side edges of one bent piece 2.
A fastener for a piece of paper according to claim 1, characterized in that it is formed by folding a portion b.