CN2813328Y

CN2813328Y - Universal multifunction geometric drawing instrument

Info

Publication number: CN2813328Y
Application number: CN 200520034631
Authority: CN
Inventors: 刘维刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-27
Filing date: 2005-06-27
Publication date: 2006-09-06
Anticipated expiration: 2015-06-27

Abstract

The utility model relates to a universal multifunctional geometric drawing instrument, which is composed of an indexing ruler and an indexing disc, wherein the indexing ruler is a ruler and the indexing disc is composed of a protractor and a rectangular indexing disc. The indexing ruler is arranged on the indexing disc. The middle part of the indexing ruler is provided with a positioning hole which is moved horizontally and transversely. The middle part of the indexing disc is provided with a positioning hole which is moved horizontally and longitudinally. The universal multifunctional geometric drawing instrument skillfully combines the indexing ruler and the indexing disc to form a geometric drawing instrument which has various functions of drawing angles in a forward and reverse directions in indexing and equivalent, drawing figures by moving longitudinally and transversely in parallel in the forward and the reverse directions, drawing edges flexibly with various changes, drawing the figures rotatablely, etc., as a whole. The utility model can be used for rapidly and accurately manufacturing geometric figures of various shapes and angles.

Description

Functional universal Geometric figure drawing instrument

Technical field

The utility model relates to drawing instrument, particularly a kind of functional universal Geometric figure drawing instrument.

Background technology

At present, in, the teacher of primary school is in the process of carrying out several teaching, still adopt traditional ruler, protractor, compasses etc. as teaching aid mostly, the student also with it as drawing various geometric instruments, because existing these drawing instruments are the apparatus of simple function, when carrying out the several teaching mapping, often need several drawing instruments to use simultaneously, carry inconvenience, mapping is slow, and accuracy is poor, particularly student's difficulty of mapping, can not map apace and solve a problem, directly the effect of influence teaching and study.On the other hand, geometric construction also is one of routine work of many industry engineers and technicians, for improving the accuracy and the operating efficiency of engineers and technicians' geometric construction, need a kind of multiple function that has too, can draw various geometric drawing instruments quickly and accurately.

Summary of the invention

The purpose of this utility model is that design is a kind of simple in structure, easy to use, many, quick, accurate, the practical functional universal Geometric figure drawing instrument of mapping kind.

The purpose of this utility model is achieved through the following technical solutions:

Functional universal Geometric figure drawing instrument, form by graduated scale and index dial, it is characterized in that graduated scale is a ruler, index dial is made of semicircular protractor and rectangle index dial two parts, graduated scale be located at index dial above, the base of graduated scale is provided with reticule, its central point is the rotational positioning hole, overlaps the location with protractor half circle center hole in the index dial, fixes by connecting screw, the middle part of graduated scale has the transverse translation locating hole, and the index dial middle part has the longitudinal translation locating hole.

The right and left of the base center positioning hole of graduated scale is the rotatable reticule of determining the minute of angle size of index dial, its another side then with the right and left of index dial top margin, constitute the instrument of picture limit mapping, scale all is carved with on two limits of graduated scale, and both sides are thin, thick middle, and top margin is a ruler.

Semicircle core diameter line in the index dial also is the start line of semicircle zero angle, and is parallel with the index dial top line, and the top margin of index dial is thin, the base is thick, is skewed, and the index dial top margin is carved with the scale of spirogram shape edge lengths, and the base is a ruler.

The advantage that the utility model had is: the 1. definition at applicating geometric intersecting lens and parallel lines and angle, graduated scale and index dial combination dexterously with special shape, form one and had forward and reverse calibration equivalent picture angle, forward and reverse, in length and breadth to parallel mobile mapping, flexible and changeablely do that limit and rotation mapping etc. are multi-functional to be the Geometric figure drawing instrument of one; 2. proposed a kind of based on equivalent picture angle, the new model that multi-functional cooperation is mapped with the angle; 3. simple in structure, easy to use, usage range is wide, can draw various geometric figures quickly and accurately, fully satisfies the needs that numerous teachers, student and engineers and technicians carry out Geometric figure drawing.

Description of drawings

Fig. 1 is the front view of the utility model embodiment;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is to use an example of the utility model mapping, and promptly graduated scale is drawn the signal of horn shape attitude at the index dial moderate.

The utility model is described in further detail below in conjunction with drawings and Examples.

Among the figure, 1-rectangle index dial, 2-graduated scale, 3-connecting screw, 4-transverse translation locating hole, 5-longitudinal translation locating hole, the reticule of 6-index dial.

The specific embodiment

As shown in Figure 1 and Figure 2, multi-functional Geometric figure drawing instrument of the present utility model is made up of graduated scale and index dial, wherein graduated scale 2 is a ruler, index dial 1 is made of semicircular protractor and rectangle index dial two parts, graduated scale 2 be located at index dial 1 above, the locating hole of half circle center hole in half circle center hole on graduated scale 2 bases and the index dial 1 overlaps, and is fixing by connecting screw 3, can regulate tightness as required.The hole week of half circle center hole of graduated scale 2 can be made into the round platform of thickening, to increase its intensity.

The angular metric of index dial 1 is 180 ° of the straight angles, its reticule be outer, in, the concentric radial line of interior three layers of different length, angle metric numeral adopts vertically arranges, so that more can discern the angle numeral that graduated scale rotates on reticule.The center, base of graduated scale 2 is rotational positioning holes, and this hole the right and left is the rotatable reticule 6 of determining the minute of angle size of index dial, its another side then with the right and left of index dial 1 top margin constitute the picture limit do the angle instrument.The scale of spirogram shape edge lengths all is carved with on two limits of graduated scale 2, and its both sides are thin, thick middle, and top margin is a ruler.The graduated scale middle part has transverse translation locating hole 4.

Semicircle diameter line in the index dial 1, also be the start line CD of semicircle zero angle, equidistant with index dial 1 top margin AB line parallel, when the reticule 6 of rotating graduated scale 2 bases, intersect with two the parallel lines AB and the CD of index dial 1 top margin, constituted the basic mapping function that the critical equivalent of this plotter is drawn the angle.

Index dial 1 is made skewed that top margin is thin, the base is thick, its top margin is carved with the scale of metering graph edge length, cooperates with graduated scale 2 when rotating, in the size of 6 times definite minute of angle of its reticule, index dial 1 middle part has longitudinal translation locating hole 5, and the base is one to have the ruler of scale.

During use, graduated scale 2 can be pressed forward and reverse random rotation on index dial 1, and outside graduated scale 2 was in index dial 1, the reticule 6 on graduated scale limit was with the semicircle diameter of index dial 1 and the zero degree start line is three-way when overlapping, and minute of angle is zero.

The utility model can adopt and have certain flexibility and moderate, nontoxic transparent plastic or the lucite manufacturing of hardness, and its size is determined according to actual needs.

Fig. 3 only illustrates the example that the utility model is used to map, it is graduated scale is drawn the horn shape attitude at the index dial moderate a example, as shown in the figure, as long as rotate graduated scale 2, the reticule on graduated scale 2 bases 6 times, index dial 1 all accurately gives expression to the minute of angle of index dial on reticule, i.e. ∠ CO in the angular metric mode ₁F.Meanwhile, at the another side of index dial 1, graduated scale limit and index dial top margin intersect, according to the definition at angle, by public point O ₂, two ray O ₂E and O ₂B forms ∠ EO ₂B constitutes equivalent group angle and draws the special mapping function that carry out synchronously at the angle, i.e. ∠ CO ₁F=∠ EO ₂B.

Except that example shown in Figure 3, the attainable basic mapping function of the utility model also comprises:

One, forward and reverse calibration equivalent is drawn the angle function, and realization calibration equivalent is drawn the angle and mapped with the angle.The acute angle of the various angles of can drawing, right angle and obtuse angle, easily the tolerance of measured angular, divide the angle equally, increase the angle, reduce the angle and draw angle below 10 °, quickly and accurately with the angle draw triangle, quadrangle, the circle of different shape angle circumscribed, in connect regular polygon etc.;

Two, forward and reverse, in length and breadth to parallel mobile mapping function.Can be without guiding ruler, this plotter is forward and reverse, move to parallel in length and breadth, the parallel lines of forward and reverse various angles of drawing cooperate equivalent to draw the angle function, realize quick and precisely drawing the quadrangle and the composite figure of different shape, and in geometric figure, make parallel edges, parallel lines or neutrality line etc.;

Three, flexible and changeable limit and the rotation mapping function done.Rotate graduated scale limit and index dial top margin and intersect, this plotter is that desirable equivalent is drawn the angle instrument, can form one on the other the one positive one anti-flexible and changeable limit instrument of doing again.The little right angle that the ruler of graduated scale part forms at the graduated scale two ends, be specialized designs in geometric figure, particularly make vertical line in how much cards topics, draw the right angle, draw use such as auxiliary extended line.The base ruler of rectangle index dial can cooperate compasses to carry out construction with ruler and compasses.

The rotation mapping is with equivalent picture angle, translation, makes the new model of the multifunctional integrated cooperation in limit with the angle mapping, character according to symmetric figure, this plotter is rotated to an angle, can draw the point symmetry figure of various angles, shape and zhou duicheng tuxing etc. fast.

The utility model is according to geometric definition, character and rule, and design innovation goes out a cover mapping A wide selection of colours and designs, more complete, easy, rapid-result drawing method.

Make various parallelogram quickly and accurately or in geometric figure, map in order to ensure using this plotter, theory according to main track, in the setting-out of chi limit, remaining small parallel distance between chi limit and the nib with pencil, this is a kind of track of simple point.Use this theory, design has designed the auxiliary graphing method of tip of a pencil vertical orientation, tip of a pencil is stood on the angle and limit of drawn figure, locatees angle and the limit tram in geometric figure of this plotter rapidly, is convenient to map with the angle.Its method is simple and practical, as: 1. be positioned the angle that plotter is formed, draw central angle in the center of circle with the upright center of circle of nib; 2. parallel edges, parallel lines, neutrality line etc. are made to translation in length and breadth in graph edge in upright two this plotter of the point location chi limits of nib; 3. with this plotter of three-point fix chi limit, make the length of side of polygon circumscribed about a circle etc. in graph edge.

Claims

1, a kind of functional universal Geometric figure drawing instrument, form by graduated scale and index dial, it is characterized in that graduated scale (2) is a ruler, index dial (1) is made of semicircular protractor and rectangle index dial two parts, graduated scale (2) be located at index dial (1) above, the base of graduated scale (2) is provided with reticule (6), its central point is the rotational positioning hole, overlap the location with protractor half circle center hole in the index dial (1), fixing by connecting screw (3), the middle part of graduated scale (2) has transverse translation locating hole (4), and index dial (1) middle part has longitudinal translation locating hole (5).

2, functional universal Geometric figure drawing instrument according to claim 1, the right and left that it is characterized in that the base center positioning hole of graduated scale (2), it is the rotatable reticule (6) of determining the minute of angle size of index dial, its another side then with the right and left of index dial (1) top margin, constitute the instrument of picture limit mapping, scale all is carved with on two limits of graduated scale (2), and both sides are thin, thick middle, and top margin is a ruler.

3, multi-functional Geometric figure drawing instrument according to claim 1, it is characterized in that the semicircle core diameter line in the index dial (1), also be the start line CD of semicircle zero angle, with index dial (1) top margin AB line parallel, the top margin of index dial (1) is thin, the base is thick, be skewed, index dial (1) top margin is carved with the scale of spirogram shape edge lengths, and the base is a ruler.