JPH0543002U - Scale for enlarged drawings - Google Patents

Abstract

(57) [Summary] [Purpose] The original dimensions are measured directly from the reduced and enlarged drawings. [Structure] A scale is formed on the basis of a scaling ratio, and the original size corresponding to the scale value is displayed on the scale. [Effect] The original size can be easily and accurately obtained by merely applying the scale for the enlarged drawing to the enlarged drawing and measuring the actual dimension thereof.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a scale for enlarged / reduced drawing suitable for measuring original dimensions of a drawing reduced or enlarged by copying or the like.

[0002]

[Prior Art]

As a general rule, design drawings are often drawn with original dimensions. However, if the original size drawing is large, it is often inconvenient because it is inconvenient to handle. Also, since the actual size is small, it is often necessary to enlarge the display. A copying machine is generally used as an office machine for reducing or enlarging drawings. Many of the recent copying machines have a reduction ratio for each unit, but generally, A ₃ size is changed to B ₄ , A _{3 is changed} to A ₄ , B _{4 is changed} to B ₅ , and A is changed. A device having a function of changing ₄ to B ₅ is adopted. On the other hand, most of the scales for measuring dimensions are formed in the original size, and there are also polygonal multi-sided scales, but those of 1 mm units, 0.5 mm units, and inch units. Is only displayed.

[0003]

[Problems to be solved by the device]

 In the case of design drawings, the dimensions of the main parts of the parts are usually entered. Therefore, for example, even if a drawing is reduced or enlarged, the size and size of the part can be known from the enlarged drawing. However, in drawings without dimensions, such as assembly drawings, it is not possible to know the size of the drawings just by looking at them. Of course, it is possible to measure the dimensions of each part of the assembly drawing using an ordinary scale and to know the reduction ratio of the assembly drawing to convert the original dimensions to obtain the original dimensions. However, the work is tedious and error-prone. In addition, since the expansion / contraction ratios of drawings are on each level as described above, multiple scales should be prepared in the case of a single structure scale even if there is an appropriate expansion / contraction drawing scale. Management and handling becomes complicated.

The present invention was devised in view of the above circumstances, and it is possible to easily measure the original size from a reduced or enlarged drawing, and it is easy to handle and relatively inexpensive to carry out. It is an object to provide a scale for enlarged drawings.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is a scale for measuring the size of a drawing by reducing or enlarging the size of the drawing and measuring the size of the drawing. A scale is formed on the basis of the enlargement / reduction ratio for displaying the ratio, and a scale for enlarged / reduced drawings is formed on which the original size corresponding to the scale value is displayed, and the enlargement / reduction ratio is different. A scale for enlarged / reduced drawing is constructed so that the scale is displayed on each side of a polyhedron.

[0006]

[Action]

 Measure the dimensions of the enlarged drawing using the enlarged drawing scale that corresponds to the reduction ratio of the drawing. Scales for enlarged drawings show scales corresponding to the enlargement / reduction ratio, and the original dimensions corresponding to the scales are displayed. Therefore, it is possible to know the actual dimensions directly by measuring the enlarged drawings. Can be done. Further, when a polyhedron that displays the scale is used, a single scale can be used for almost all purposes, the handling becomes easy, and the scale management becomes easy.

[0007]

【Example】

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 3, when the component 6 having the original size a is passed through the copying machine 7, an enlarged view of a ₁ > a or a reduced view of a ₂ <a is obtained. As mentioned above, the dimensions a, a ₁ and a ₂ are not shown in the drawing in this case.

As shown in FIG. 1, scales having different expansion / reduction ratios are displayed on the triangles of the A-side, B-side, and C-side of the elongated scale body 1 having a triangular cross section. As shown in the figure, for example, four scales are displayed on the A side, 1 / √2 scale 2 and 1 / √2 scale 3 are displayed on the upper side, and √2 scales 4 and 2√2 are displayed on the lower side. Scale 5 is displayed respectively. Of course, more scales may be displayed on the upper side and the lower side, and the content of the scale displayed on the A side is not limited to the above. Although not shown, scales having different expansion / reduction ratios are similarly displayed on the upper and lower sides of the B and C planes, respectively. As described above, in the case of this embodiment, 12 kinds of scales are displayed on the A surface, B surface, and C surface. Various reduction ratios can be used, for example 1 / √2,1 / 2√2,1 / 2.5√2,1 / 5√2, √2,2√2,2.5√2,5√ 2 mag is raised. For example, when a drawing of A ₃ size A ₄ for the area is to be approximately 1/2 the size of each side is shortened by 1 / √2. In that case, the scaling factor is 1 / √2. On the contrary A ₄ to be of a reduced拡率when expanded to A ₄ becomes √2. Figure 2 shows the detailed structure of the 1 / √2 scale 2. In the case of 1 / √2 scale 2, for example, the original size of 10 mm is displayed as the actual size of 7.08 mm. That is, the length of 7.08 mm is displayed so as to correspond to the original size of 10 mm. At the same time, the actual size of the 20 mm scale of the 1 / √2 scale 2 is displayed at 7.08 x 2 = 14.16 mm, and the actual size of the 60 mm scale is displayed at 7.08 x 6 = 4 2.48 mm. To be done. Based on the above, if the drawing made in the actual size on a paper of A ₃ size becomes A ₄ by the copying machine, the result of measuring the copied A ₄ drawing with 1 / √2 scale 2 location of 42.48mm on the a ₄ drawing is displayed as 60mm. It is obvious that the size of the original drawing at that location is 60 mm. That is, the actual dimensions on the drawing of the reduced A ₄ size as in the conventional scale was measured, measuring the original dimensions without requiring any operation for obtaining the original dimensions over a reduced拡率to that value Is possible. Similarly, for drawings with different enlargement / reduction ratios, by using the corresponding scale of the enlargement / reduction drawing scale 1, the original dimensions can be simply measured in the same manner as described above.

In the present embodiment, the scale 1 for expanding and contracting drawings of a trihedron is adopted, but the trihedron may not be a regular trihedron, and if the trihedron is a polyhedron, it is of course possible to adopt a polyhedron. Absent. In the present embodiment, different scales may be displayed on the A-, B-, and C-planes of the trihedron, and a large number of scales such as the four scales in FIG. 1 may be displayed. May be displayed on the same surface. In addition, the patterns and color shapes may be changed in order to make the classification of the scales having different expansion / contraction ratios detailed. Further, the material of the scale 1 for enlarged drawings is not particularly limited to wood, resin, metal or the like. Further, each scale may be engraved on the scale body, and may be detachably or fixedly attached.

[0010]

[Effect of the device]

 According to the present invention, the following effects can be obtained. (1) The original dimensions can be measured easily and accurately directly from the reduced or enlarged drawing. (2) Unlike the conventional scale, it is not necessary to calculate the original size based on the measured value, and anyone can easily measure the original size. (3) By displaying scales of various expansion / contraction ratios on one scale, various drawings can be measured with only a single scale, which facilitates handling. (4) Since it is not necessary to prepare many scales, the scales can be easily managed. (5) Scales are displayed on the scale body according to the reduction ratio, and can be implemented at relatively low cost.

[Brief description of drawings]

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

FIG. 2 is a plan view showing a detailed structure of a 1 / √2 scale scale.

FIG. 3 is a plan view for explaining reduction and enlargement of a drawing by a copy machine.

[Explanation of symbols]

 1 Scale for expanded / contracted drawing 2 1 / √2 scale 3 1 / 2√2 scale 4 √2 scale 5 2√2 scale 6 Parts 7 Copy machine

Claims (2)

[Scope of utility model registration request] 1. A scale for measuring the size of a drawing by reducing or enlarging the size of the drawing to measure the size of the drawing, and displaying the ratio between the actual size and the size of the reduced or expanded drawing. A scale for enlarged / reduced drawing, characterized in that a scale is formed on the basis of the ratio and the original size corresponding to the scale value is displayed on the scale. 2. The corner surface of the scale body composed of a polyhedron,
A scale for expanding and contracting drawings that is formed by graduations with different expansion and contraction rates.