JPS6232877Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an underlay for stationery used, for example, by schoolchildren at school.

Conventionally, the underlay generally used is a hard synthetic resin plate or a metal plate, and is merely an auxiliary tool for writing with a pencil, and has no other function. It is also known that two synthetic resin sheets are glued together on three sides to serve as a paper sandwich, but in this case, the synthetic resin sheet is not hard enough and is used as an underlay for writing with a pencil. It is inconvenient to do so.

The purpose of the present invention is to eliminate the above-mentioned drawbacks, and to provide a stationery underlay that functions well as an underlay and can also be used as a paper clip. a thin metal substrate having a thin metal substrate, and a relatively thick soft transparent synthetic resin sheet that is overlapped on the bulging surface of the curled portion of the metal substrate and has approximately the same size as the inner edge of the curled portion. the synthetic resin sheet has at least one side bonded to one side of the metal substrate,
The present invention is characterized in that a piece of paper or the like can be removably inserted between the metal substrate and the synthetic resin sheet.

The present invention will be explained in detail based on illustrated embodiments.

In Fig. 1, reference numeral 1 denotes a metal substrate made of a thin steel plate, and the peripheral edge 2 of this metal substrate 1 is rounded, as shown in an enlarged view in Fig. 2, mainly to prevent danger, except for the joints described later. It forms a bent curl part 3. This curled portion 3 corresponds to the surface 4 of the metal substrate 1.
The sides are bulged out, and the back side 5 is completely flat. Then, on the surface 4 side, a relatively thick soft transparent synthetic resin sheet 6 having a size that fits almost inside the curled portion 3, that is, approximately the same size as the inner edge of the curled portion 3, is superimposed. 1
The side is connected to one side of the metal substrate 1. This connection is achieved by folding back the edge 7 of one side of the metal substrate 1, inserting the edge 8 of the synthetic resin sheet 6 into this folded-back portion, and caulking the metal substrate 1, as shown in FIG. .

Therefore, in this underlay, since the metal substrate 1 is a metal plate having sufficient hardness, if the back side 5 is used, it can function satisfactorily as an underlay for writing with a pencil. Moreover, various kinds of pieces of paper 9, for example, can be sandwiched between the synthetic resin sheet 6 and the metal substrate 1, and since the synthetic resin sheet 6 is transparent, it can be used by school children and the like by sandwiching their timetables, etc. Furthermore, since this synthetic resin sheet 6 is soft and relatively thick, it can also be used as an underlay for ink stamping, and the metal substrate 1 is polymerized with this relatively thick synthetic resin sheet 6. Therefore, the thickness of the metal substrate 1 can be made thinner than that of a conventional metal underlay. In this case, since the peripheral edge 2 of the metal substrate 1 is rounded and curled, there is no risk of cuts etc. occurring during use. In addition, since this curled portion 3 faces the front side of the metal substrate 1, there is no problem in using the back side as an underlay, and there is no problem in using a piece of paper or the like between the curled portion 3 and the synthetic resin sheet 6. It also serves as a stopper to prevent pieces of paper from slipping down if they are caught.

Note that the metal substrate 1 and the synthetic resin sheet 6 may be bonded not only on one side but also on two or three sides at the same time. Further, it goes without saying that this connection may be made by adhesion or the like instead of caulking.

As explained above, the stationery underlay according to the present invention not only functions as a mere underlay, but also can sandwich pieces of paper and make them visible from the outside through the synthetic resin sheet, making it extremely convenient to use.

[Brief explanation of the drawing]

The drawings show an embodiment of the stationery underlay according to the present invention, in which Fig. 1 is a perspective view of the synthetic resin sheet in a lifted state, Fig. 2 is an enlarged sectional view of the curled part, and Fig. 3 is an enlarged view of the joint part. FIG. Symbols: 1 is a metal substrate, 2 is a periphery, 3 is a curled portion, 4 is a front surface, 5 is a back surface, 6 is a synthetic resin sheet,
7 and 8 are edges.

Claims (1)

[Claims for Utility Model Registration] 1. A thin metal substrate having a rounded curled portion on its periphery, which is superimposed on the bulging surface of the curled portion of the metal substrate and has approximately the same size as the inner edge of the curled portion. and a relatively thick, soft, transparent synthetic resin sheet, the synthetic resin sheet having at least one side bonded to one side of the metal substrate, and a space between the metal substrate and the synthetic resin sheet. A stationery underlay characterized by being able to insert pieces of paper etc. in a detachable manner. 2. The synthetic resin sheet is bonded to the metal substrate by folding the edge of the metal substrate, inserting the edge of the synthetic resin sheet into the folded portion, and caulking the edge. Underlay for stationery.