File

Abstract

Provided is such an excellently usable file with a simple structure as has a structure usable with a back width being enlarged from an ordinary state and as can be worked for changing the back width while being double-spread on the desk. A front cover (A) and a back cover (B) are equipped at their inner edges with a pair of back width adjusting portions (1, 2), which are arranged slidably in an approaching / leaving direction on a back plate (3) so that they may take different back width positions. A fixing member (6) can be attached to a predetermined position on the inner side of the back plate (3) so that projections (61, 62) or relating portions set partially of the fixing member (6) may come, as they are attached, into engagement with through portions (12, 22) or inner edges (1P, 2P), that is, related portions set partially of the back width adjusting portions (1, 2). With the related portions being disposed at a plurality of positions, the inner edges (1p, 2p) or the one-side related portions participate in the engagement at a widening position, and the through portions (12, 22) or the other-side related portions participate in the engagement at a narrowing position.

Description

technical field [0001] The present invention relates to a folder which is particularly effective when a relatively large amount of paper and the like is to be bound. Background technique [0002] As a conventional folder of this type, the folder shown in Patent Document 1, for example, is known. In this file folder, a pair of back width adjustment parts that are folded toward the spine side are connected to the inner edges of the front cover and the back cover, and these back width adjustment parts are configured to be able to slide on the back plate along the approach / departure direction. , thereby enabling it to take different back width positions. Moreover, a lock mechanism is provided to lock the back width adjusting part at a predetermined position when the back width is normal, and if necessary, the locked state of the locking mechanism is released, whereby the back width adjusting part can be slid to the wide position, and the back width adjusting part can be tempora...

AI Technical Summary

Problems solved by technology

Therefore, with regard to the folder in Patent Document 1 whose back width is only increased, if the strength of the binding rod is lowered, it is limited to the improvement of the readability, and the binding amount is not substantially variable.

That is, in the folder represented by this patent document 1, when a relatively large number of paper objects are scheduled to be bound in advance, a folder with a large back width is used from the beginning, so it is arranged during a period when the storage volume is small. There will be more unused space when saving places

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