JPH04126264U - Transparent squares for quantity concept learning tools - Google Patents

Abstract

(57) [Summary] [Purpose] To be foldable, have accurate internal dimensions necessary as a transparent cell for learning quantitative concepts, and prevent water from leaking. [Structure] Four square side panels are foldable and connected to the left and right along the folding line, and a transparent mass body is formed with a connecting piece on the lower edge of the four side panels that becomes a temporary bottom plate when assembled. , consisting of a square flat plate that is fitted inside the temporary bottom plate of the mass body, a bag body made of a flexible transparent film that is fitted inside the mass body, and a shape-retaining frame 4 that is fitted externally to the mass body, To enable a mass body to be folded flat, to maintain accurate dimensions with a flat plate and a shape-retaining frame during assembly, and to prevent water leakage by a bag body.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The purpose of this invention is to help infants to elementary school students systematically understand the concept of quantity. It is related to the transparent squares of the quantitative concept learning tool.

0002

[Conventional technology]

The inventor first drew a grid of one unit length and angle on one side, and then Vertical lines and horizontal lines are drawn in a striped manner at 1 unit length intervals on each of the two adjacent sides. A transparent square consisting of a regular cube with an internal length of 10 units and a square with a length and width of 10 units. A plate with a thickness of 1 unit and a prism with a length of 10 units and a square cross section of 1 unit length. , a quantitative concept learning tool that combines at least 100 regular cubes of 1 unit length. (Refer to Utility Model Registration No. 1229333, Publication No. 40848 of 1983) ), and has received rave reviews for its implementation.

0003

[Problem that the idea aims to solve]

By the way, in this quantitative concept learning tool, from a regular cube of inner modulus 10 units length, A transparent mass, that is, a transparent liter described in the above-mentioned utility model publication. Square A is essential, and in actual learning materials, 1 liter is reserved for each school child. mass is used. And this liter mass is integrally molded with hard synthetic resin. These are made of hard synthetic resin plates glued and fixed, and are extremely bulky. Not only is it inconvenient to carry around, but it also requires a large amount of space for storage and transportation. Basically, this is the cause of cost increase.

0004 The present invention improves the problems of the conventional technology as described above, and can be folded flat. Moreover, it can function as an accurate mass concept learning tool. The purpose is to provide transparent mass.

[0005]

[Means to solve the problem] In order to achieve the above-mentioned purpose, this invention consists of folding four square side plates. It is foldable and continuous on the left and right through the line, and the lower edge of the four side panels A transparent mass body with a connecting piece that will serve as a temporary bottom plate during assembly, and the transparent mass A square flat plate fitted on the temporary bottom plate of the body, and a square plate fitted inside the transparent mass body. A transparent bag made of a flexible film that is in close contact with the inner surface of the mass body; A square shape-retaining frame that is fitted onto each side plate of the clear mass body to maintain its shape. The main body of the mass can be folded flat when not in use, and the bottom plate and The shape-retaining frame maintains accurate mass dimensions, and the bag body prevents water leakage. It is characterized in that it is made to look like this.

[0006]

[Effect]

As mentioned above, this invention allows the four square side plates to be folded along the fold lines. At the same time, the lower edges of the four side panels are used as temporary bottom plates during assembly. Since we constructed a transparent mass body that formed a connecting piece, the lower edge of each side plate By combining the pieces, it is possible to construct a nearly regular cubic mass with a bottom plate, and , the mass body can be folded flat by releasing the connections between the respective connection pieces. but , the temporary bottom plate made by joining each joint piece has unevenness, and if it is as it is, it will not be possible to solve the problem of quantitative concept theory. It is not possible to maintain the exact dimensions of the transparent squares of the learning tools. Here, the book The idea is to fit a square flat plate inside the temporary bottom plate made by joining each joint piece, and Set the grid lines of each transparent square based on the top surface of the flat plate to make the quantity concept learning tool transparent. Make it function as a mass. In this case, if you are not using water, you can leave it as is. When using water in a transparent container, fit the bag inside the container to prevent leakage. Prevent water. In other words, in this case, a square is placed in advance on the bottom of the bag made of transparent film. A shaped flat plate is placed inside the bag, and the flat plate is inserted into the mass body. Also, the main idea The mass body according to the plan has four side plates that are continuous from side to side and can be folded along the polygon lines. Because it is a transparent square, when you put water etc. into the transparent square, it expands outward and helps you learn quantity concepts. There is a risk that the accuracy of the mass of the tool may be lost. In this case, the present invention is transparent. A square shape-retaining frame is fitted onto each side plate of the mass body to create an accurate cubic shape. keep it. This shape-retaining frame must be positioned on the center line of the horizontal line drawn on the side panel. It can be used as a guide for reading quantities and does not get in the way.

[0007]

【Example】

An embodiment of the present invention will be described below with reference to the accompanying drawings.

[0008] Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is an exploded view of the mass body, and Fig. 3 is an exploded perspective view showing an embodiment of the present invention. An explanatory diagram of the assembled state of the mass body, Figure 4 is a longitudinal section of the assembled state for learning quantitative concepts The top view and FIG. 5 are also bottom views.

In the present invention, a transparent synthetic resin plate, for example a polypropylene plate with a thickness of 0.2 to 0.5 mm, is punched out as shown in FIG. 2, and then assembled to form a foldable mass body. That is, in FIG. 2, 11, 12, 13, and 14 are square side plates, respectively, and 15 is a welded piece, which are connected to the left and right via polygonal lines l ₁ , l ₂ , l ₃ , and l ₄ . At the same time, a connecting piece 16 is attached to the lower edge of the side plate 11 via the fold line _l5 , a connecting piece ₁₇ is attached to the lower edge of the side plate 12 via the fold line l6, and a connecting piece 17 is attached to the lower edge of the side plate 13 via the fold line _l7 . forming a connecting piece 18 and a connecting piece 19 at the lower edge of the side plate 14 along the fold line _l8 , and bending each side plate 11 to 14 and the welded piece 15 along the fold line _l1 to _l4 , The welding piece 15 is overlapped with the left edge of the side plate 11 and the two are welded to form the foldable mass main body 1 shown in the bottom row of FIGS. 3 and 1.

0010 When the above-mentioned connecting pieces 16 to 19 are combined, they form a temporary bottom plate of a substantially regular cube. It can be configured in any way as long as it can be configured, but the implementation shown in the diagram The example has an insertion tongue piece 161 in the center of the lower end and cuts both sides of the tongue piece diagonally. A connecting piece 16 is formed on the lower edge of the side plate 11, and an insertion recess 181 is formed in the center of the lower edge. A connecting piece 18 having a joint piece 18 is formed on the lower edge of the side plate 13, and the lower edge of the side plates 12 and 14. It has insertion tongues 171 and 191 facing each other and facing laterally, and the upper end thereof. Connecting pieces 17 and 19 are formed by cutting diagonally.

[0011] When each of the connecting pieces 16 to 19 is constructed as described above, as shown in FIG. Fold in the piece 18, then fold the joining pieces 17 and 19 over it and insert the insertion tongue. Insert the pieces 171 and 191 into the lower surface of the insertion recess 181, and then insert the coupling piece 1 thereon. 61 and insert the insertion tongue piece 161 in the center from the insertion recess 181 into the connecting piece 1. By inserting between the lower surface of 8 and the upper surface of insertion tongue pieces 171 and 191, a regular cube is formed. A temporary bottom plate is constructed. Although not shown in Figures 2 and 3, the side view Three side plates among the plates 11 to 14 have a length of 1 unit based on the top surface of the flat plate 2. A horizontal grid a1, a vertical line a2 with a length interval of 1 unit, and a horizontal line a3 with a length interval of 1 unit. A scale line is drawn (see Figure 1).

0012 As described above, the transparent mass of the present invention is foldable and can be folded as needed. A transparent mass body 1 that can form a regular cube and its temporary A square flat plate 2 that can be fitted onto the bottom plate, and the inside of the transparent mass body 1. It is made of a flexible film that can be inserted into the mass body 1 and brought into close contact with the inner surface of the mass body 1. A transparent bag body 3 and a square shape-retaining frame 4 surrounding each side plate of the mass body are used. Configure.

[0013] The flat plate 2 is, for example, a polypropylene plate with a thickness of 1 to 2 mm, and may be modified as necessary. A grid of one unit length is drawn on one side of the grid, and this is placed on the bottom of the grid body 1. When inserted, its four sides should come into close contact with the inner surfaces of each side plate of the mass body 1. Ma In addition, the bag body 3 is a flexible polyethylene bag, and its height dimension is masked. When the bag is made sufficiently higher than the main body 1 and inserted into the mass main body 1, the bag body will fit inside the mass main body. Make sure it comes into close contact with the surface. Although FIG. 1 shows a rectangular tube-shaped bag 3, this is not necessarily the case. It does not have to be prismatic. Even if it is a regular bag, the material is thin like polyethylene. If it is soft and flexible, it can be made to come into close contact with the inner surface of the mass body 1 even if there are some wrinkles. I can do that. The shape-retaining frame 4 may be made of metal, such as aluminum, in the shape of a round bar or square. It is a rod-shaped item that is fitted onto each side plate of the mass body 1 assembled into a substantially regular cube. Then, the mass body 1 is tightened so that its cubic shape can be maintained.

[0014] As mentioned above, the mass of the quantitative concept learning tool of the present invention includes the mass body 1, the flat plate 2, It is composed of a bag body 3 and a shape retaining frame 4, so the mass body 1, flat plate 2 and retaining By separating the frame 4, the mass body 1 can be folded into a flat state, making it easy to use. Then, assemble the mass body into a nearly regular cube by joining the connecting pieces at the lower edge of each side plate, Insert the flat plate 2 into the bottom of the bag body 3, and insert the bag body 3 together with the flat plate 2 into the mass body 1. Then, stack the flat plate 2 on the temporary bottom plate made up of each joint piece, and then If we draw a grid with scales based on , and vertical and horizontal lines, we can accurately calculate It can function as a quantitative concept learning tool. Then, mass body 1 A square shape-retaining frame 4 is fitted around each side plate, so it can be disassembled and folded. Even small squares can maintain their correct cubic shape during use. In addition, before Although the embodiment described above has been explained in terms of liter mass, it also applies to deciliter mass. Of course, it can be applied as is.

[0015]

[Effect of the idea]

As described above, according to the present invention, it can be folded flat, and It is significantly lighter than conventional models, and when in use it is similar to a rigid mass. It is effective to obtain transparent squares that function as a quantitative concept learning tool. Ru.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a developed view of the mass body.

FIG. 3 is an explanatory diagram of the assembled state of the mass body.

FIG. 4 is a longitudinal sectional view of the assembled quantity concept learning tool.

FIG. 5 is a bottom view as well.

[Explanation of symbols]

1 transparent mass body, 2 flat plate, 3 flexible transparent bag body,
4 Shape-retaining frame, 11-14 Side plate, 15 Welding piece, 16
~19 Connecting piece.

Claims (2)

[Scope of utility model registration request] Claim 1: A transparent mass body in which four square side plates are foldably connected to the left and right via a fold line, and a joining piece is formed at the lower edge of the four side plates to serve as a temporary bottom plate during assembly. It consists of a square flat plate that is fitted inside the temporary bottom plate of the mass body, and a square shape-retaining frame that is fitted externally to each side plate of the mass body to maintain the shape of the mass body, and when not in use. This transparent mass, which is a quantity concept learning tool, is characterized in that the mass body can be folded flat, and when in use, accurate dimensions as a mass can be maintained by a flat plate and a shape-retaining frame. [Claim 2] A transparent mass body in which four square side plates are foldably connected to the left and right through fold lines, and a joining piece is formed at the lower edge of the four side plates to serve as a temporary bottom plate during assembly. a square flat plate fitted onto a temporary bottom plate of the mass body, a transparent bag made of a flexible film that is fitted inside the mass body and comes into close contact with the inner surface of the mass body, and the mass body. It consists of a square shape-retaining frame that fits onto each side plate of the square to maintain the shape of the mass body, and when not in use, the mass body can be folded flat, and when in use, the flat plate and shape-retaining frame form an accurate mass. A transparent mass of a quantity concept learning tool, which maintains the dimensions of , and prevents water leakage due to the bag body.