JP3098952U - book cover - Google Patents

Abstract

An object of the present invention is to provide a book cover made of a soft synthetic resin having a latching structure which can be easily inserted into a slot but does not come off easily.
Kind Code: A1 A book cover made of a soft synthetic resin material, which is formed by two sheets overlapping as an extension of a cover sheet (2) and an inner sheet (3), and the periphery thereof is joined by high frequency welding. A hook strip (7) is provided, and a plurality of hooks (9) are formed by equally-spaced mountain-shaped slits (8) formed in the inner sheet (3 ') of the hook strip. A slot (10) for inserting a piece is provided in the left seat portion of the cover sheet so that when the latch strip is inserted into the slot, one of the hooks is hooked on the edge of the slot. is there.
[Selection diagram] Fig. 1

Description

[0001]
[Field to which the invention belongs]
The present invention relates to a book cover made of a soft synthetic resin adapted to be used as a cover for a photo album having a top-open type pocket or a book, a notebook, a system notebook, and the like, and particularly, to keep such a book cover in a closed state. Latch structure for
[0002]
[Prior art]
For example, this type of photo album is of a size that is convenient to carry in a bag or the like, the cover is made of a semi-rigid synthetic resin material such as polypropylene, and the left and right sides correspond to the back. A plurality of transparent films having a pair of top open pockets on the left and right are stacked and fixed on a web portion between the cover portions by welding. Heretofore, such a photo album, a book, a notebook, or a system notebook may be provided with a book cover from the viewpoint of making a good appearance, preventing contamination, or hiding the cover. The book cover has a latch structure for holding a photo album or the like in a closed state. As one such structure, a type in which a strip extending from one side edge of the book cover is inserted into a slot provided in the book cover adjacent to the other edge of the book cover is known. Alternatively, a hook type or a magic tape (registered trademark) type is also known.
[0003]
[Problems to be solved by the invention]
However, the latter type has a drawback that, although it is surely latched, it is located outside the book cover and the projection is not always good. In this regard, the former structure does not have such a drawback and is ideal, but has a drawback in latching. That is, since the strip is simply inserted into the slot, the strip may sometimes come off the slot and come off, and there is a drawback that the strip does not serve as a holder.
An object of the present invention is to provide a book cover having a latching structure which is devised by focusing on such inconvenience and which can be easily inserted into a slot but does not come off easily.
[0004]
[Means for Solving the Problems]
According to the present invention, the above objects are achieved by the upper and lower edges and the outer edges of the inside of the left and right sheet portions of the cover sheet made of a soft synthetic resin material, and the inner sheet of the same material as the cover sheet, which is superimposed on each of them. Are closed by high-frequency welding to form a holder having an insertion port in the inner part, and are formed of two sheets overlapping as an extension of the cover sheet and the inner sheet constituting the holder on the right side. Is provided with a retaining strip joined by high frequency welding, a plurality of hooks are formed by equally spaced chevron-shaped slits applied to the inner sheet of the retaining strip, and a slot for inserting the retaining strip is provided. Is provided on a sheet portion on the left side of the cover sheet so that when the latch strip is inserted into the slot, one of the hooks is hooked on the edge of the slot. It is achieved by providing a book cover.
[0005]
[Action]
When the book cover according to the present invention is used for a photo album, the photo album is covered with the book cover by first inserting the left and right integrated cover portion of the cover of the photo album into the slot of the holder. Covering is performed in the same manner for a book or a system organizer. When the photo album is closed and the latch strip is inserted into the slot, the hook located at a position corresponding to the insertion depth is hooked on the edge of the slot, and the strip is latched there.
[0006]
[Embodiment of the invention]
FIG. 1 is a perspective view of a book cover 1 according to the present invention. The book cover 1 includes a cover sheet 2 made of a soft synthetic resin material. The upper and lower edges and the outer edge are closed by high-frequency welding 6 with the inner sheets 3 and 3 of the same material as described above, so that holders 5 and 5 having insertion ports 4 and 4 in the inner portion are formed. The soft synthetic resin material is, for example, a material in which ethylene vinyl acetate is laminated in a sandwich shape with polypropylene, and the material is very flexible. Generally, it is formed as a transparent material, but may be opaquely colored and printed depending on the application. A latching strip 7 formed of two sheets 2 ′ and 3 ′ overlapping each other as an extension of the cover sheet 1 and the inner sheet 3 constituting the right holder 5, and the periphery of which is joined by high-frequency welding 6 ′. Is provided. The inner sheet 3 ′ of the retaining strip 7 is provided with a mountain-shaped slit 8 at regular intervals, and a plurality of hooks 9 slightly raised by creasing 8 ′ are formed. A slot 10 for inserting the locking strip 7 is provided in the left seat portion of the cover sheet. When the book cover is closed and the retaining strip 7 is inserted into the slot 10, one of the hooks 9 is hooked on the edge of the slot 10 to perform the retaining. When pulling out the latching strip 7 from the slot 10, it is necessary that the hook be easily detached from the edge of the slot, and the hook must be removed by the elasticity of the hook itself without deforming the edge of the slot. It is necessary to warp. To facilitate this bowing of the hook, it is desirable to make the edge of the slot stiff enough to not lose to the hook. For this purpose, the edge of the slot is provided with a hardened edge 11 by means of heat compression performed through a hole 10 ′ in the inner sheet 3.
[0007]
As can be seen from FIG. 2, the photo album 12 includes a cover 14 made of a semi-rigid synthetic resin material such as polypropylene and having cover portions 13, 13 as described above. On the web portion 15 corresponding to the spine of the cover, a plurality of transparent films having a pair of top open pockets 16 on the left and right are stacked and fixed by ultrasonic welding 17.
[0008]
The left and right integrated cover portions 13 and 13 of the cover 14 of the photo album 12 are folded back, for example, so as to be easily inserted into the insertion openings 4 and 4 of the pair of right and left holders 5 and 5 of the book cover 1. The cover is returned to its original position while inserting the outer ends of the parts 13, 13 into the insertion holes 4, 4 of the holders 5, 5. Thus, the left and right cover portions 13 and 13 are completely accommodated in the holders 5 and 5, and the photo album is covered with the book cover 1 from the outside. When the book cover 1 is closed and the strap 7 is inserted into the slot 10, the photo album 12 is securely held by the book cover 1.
[0009]
Obviously, books, notebooks and system notebooks can be covered in exactly the same way.
[0010]
As described above, when the book cover is closed and the retaining strip 7 is inserted into the slot 10, one of the hooks 9 is hooked on the edge of the slot 10 to perform the retaining. When the strip 7 is to be pulled out of the slot 10, a slight force is applied to the locking strip to pull it. Then, the hook 9 is resiliently warped against the edge of the slot 10 and comes off the edge of the slot 10, so that the latch strip 7 can be pulled out of the slot 10. As soon as hook 9 is disengaged from slot 10, it returns due to its elasticity. In this way, the original latching function, such that the latching strip is easily inserted into the slot and hard to pull out, is sufficiently exhibited.
[Brief description of the drawings]
FIG. 1 is a perspective view of a book cover according to the present invention.
FIG. 2 is a perspective view showing a state in which the book cover according to the present invention is used for a photo album having a top open type pocket.
FIG. 3 is a longitudinal sectional view showing the details of the strap for retaining the book cover according to the present invention;
FIG. 4 is a schematic cross-sectional view showing how the book cover is latched according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Book cover 2 Cover sheet 3 Inner sheet 3 'Inner sheet 4 Insertion opening 5 Holder 6 High frequency welding 6' High frequency welding 7 Latch strip 8 Slit 8 'Crease 9 Hook 10 Slot 11 Hardened border 12 Photo album 13 Cover part 14 Cover 15 Web part 16 Top open type pocket 17 Ultrasonic welding

Claims (1)

The upper and lower edges and the outer edge are closed by high-frequency welding between the inner sides of the left and right sheet portions of the cover sheet made of a soft synthetic resin material and the inner sheet of the same material as the cover sheet, which is superimposed on each of them. Forming a holder having an insertion port in one side, a cover sheet constituting the right holder and an overlapping sheet as an extension of the inner sheet, formed of two sheets which are overlapped with each other, and the perimeter of which is joined by high frequency welding. A plurality of hooks are formed by equiangular slits provided on the inner sheet of the strip, and a slot for inserting the latch strip is provided in a left seat portion of the cover sheet, A book cover, wherein one of the hooks catches on an edge of the slot when the latch strip is inserted into the slot.

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