JPH0123291Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a portable document case for classifying and storing documents.

(Prior art) Conventionally, for example, a front material and a backing material are provided, and elastic bellows forming both sides and a bottom are provided, and a partition plate is interposed between the bellows on both sides to partition the bellows. In the case where multiple storage parts are formed between the front material and the backing material, the bellows partition plate is formed separately, and the bellows and the partition plate interposed between them are made to penetrate together, so that the front material and the backing material are separated. A portable document case in which the two are connected by an elastic member is known from Japanese Utility Model Application No. 58-82119.

(Problem that the invention aims to solve) However, since the bellows part of this type of portable document case is made by bending a piece of hard material in a staggered manner, the bellows part is attached to the folded line. When it is folded along its sides, it tends to encounter relatively strong resistance, making it impossible to fold it lightly and sufficiently thinly.

(Means for solving the problem) The purpose of the present invention is to solve the above problem, and for this purpose, a large number of small pieces of a thermoplastic soft synthetic resin sheet cut into elongated rectangles are used. A small piece that is overlapped and located every other piece, and whose one side edge is on one side edge of the lower piece, and whose other side edge is on the other side edge of the upper piece, and between the pieces that are placed on every other piece. A pair of left and right bellows-shaped end members are constructed by welding one side edge of the upper piece to one side edge of the upper piece and the other side edge to the other side edge of the lower piece in a state of joining, respectively; These bellows-shaped end members are inserted into the left and right ends of the body member, which has an open top and left and right end faces, and which is composed of a front part, a bottom part, and a rear part, and the ends thereof are inserted into the front part of the body member. A large number of partition members are inserted between these bellows-shaped end members, and both edges are superimposed on the palm welded parts on the inside of each bellows-shaped end member. It provides a means of fastening.

〔Example〕

The embodiment shown in the figure has a shape in which both left and right end surfaces and the top surface formed by a front surface 3, a bottom surface 4 and a rear surface 5 are open by binding a thermoplastic soft synthetic resin sheet 2 to a hard cardboard core 1. A lid portion 10 with a hard cardboard core 9 is connected to the upper edge of the rear surface portion 5 of the body member 6 through a wide bendable portion 8 having multiple fold lines 7 without a core. At the same time as separately, a large number of small pieces 11 obtained by cutting a thermoplastic soft synthetic resin sheet into elongated rectangles are stacked on top of each other, and one side edge of the small pieces positioned every other piece is on one side of the lower small piece. The other side edge is the other side edge of the upper piece, and one side edge of the piece between the pieces located every other piece is the same as the other side edge of the upper piece. A pair of left and right bellows-shaped end members 12, 12' are constructed by welding the small pieces to the other side edges with their palms together,
These bellows-shaped end members 12, 12' are inserted into the left and right ends of the body member 6, and their front and rear edges are fused to the left and right edges of the front part 3 and rear part 4 of the body member 6. Separately from these, a large number of partition members 14 each having a heading piece insertion portion 13 on the upper edge are constructed using translucent thin thermoplastic synthetic resin plates, and these partition members 14 are formed by the above-mentioned bellows. shaped end member 1
2 and 12', and welded the left and right edges thereof to the respective inner folding points of the bellows-shaped end members 12 and 12', and at the center of the outer surface of the front part 3. A pocket 16 is provided by stacking transparent thermoplastic synthetic resin thin plates 15 and welding the entire periphery except for the upper side to the same location.
In the present invention, the closed state of the lid part 10 may be maintained by attaching fasteners such as hook-and-loop fasteners, hooks, and magnetic hooks to the lid part 10 and the front part 3.

(Functions and Effects of the Invention) Since the present invention is as described above, it is of course possible to sort and store documents between the partitions, but in particular, the present invention uses a thermoplastic soft synthetic resin sheet. A large number of small pieces cut into elongated rectangles are stacked one on top of the other, and one side edge of every other small piece is on one side edge of the lower piece, and the other side edge is on the other side edge of the upper piece. A bellows-like shape is created by welding one side edge of the small piece between the small pieces arranged in a row to one side edge of the upper small piece, and the other side edge to the other side edge of the lower small piece with their palms together. Since the ends of the partition member constituting the end member are overlapped and fixed to the palm welding parts on the inside of each of the bellows-shaped end members, when the body member is pressed from the front and back when closing the document case, it is extremely smooth. The bellows-shaped end member can be easily folded and contracted, and thereby the above-mentioned object of the present invention can be fully achieved.

[Brief explanation of the drawing]

The figures show an embodiment of the portable document case of the present invention, in which Fig. 1 is a perspective view of the whole with the lid open, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3
The figure is a sectional view taken along line A'-A' in FIG. 1... Core, 2... Sheet, 3... Front part, 4
...Bottom part, 6...Body member, 7...Fold line, 8...
...Bendable part, 9... Core, 10... Lid part, 11
... Small piece, 12, 12' ... Bellows-shaped end member, 13
... Index piece insertion part, 14 ... Partition member, 15 ...
Thin plate, 16...pocket.

Claims (1)

[Scope of utility model registration request] A large number of small pieces cut into elongated rectangles from thermoplastic soft synthetic resin sheets are stacked one on top of the other, and one side edge of the small pieces placed every other piece is one side edge of the lower piece, and the other side edge is the other side of the upper small piece. One side edge of the small piece existing between the small pieces located at every other side is welded to one side edge of the upper small piece, and the other side edge is welded to the other side edge of the lower small piece with their palms joined. By doing so, a pair of left and right bellows-shaped end members is constructed,
These bellows-like end members are inserted into the left and right ends of the body member, which has an open top and left and right end faces that are composed of a front part, a bottom part, and a rear part, and the ends thereof are inserted into the front part and the rear part of the member. It is fixed to both the left and right edges of the rear surface part, a large number of partition members are inserted between these bellows-shaped end members, and both ends are overlapped and fixed to the gassho welded parts on the inside of each of the bellows-shaped end members. A portable document case that is characterized by: