CN102632749B - Drawing method of multifunctional combined drawing instrument - Google Patents

Abstract

The invention relates to a multi-functional combined drawing instrument, which comprises: a first ruler, a second ruler and a third ruler, and these rulers are respectively provided with a first chute, a second chute, a The third chute, one end of the third ruler is hinged with the first chute of the first ruler through screws and nuts, and the third chute of the third ruler is connected with the first chute of the second ruler through screws and nuts. The two chutes are hinged; a needle shaft, the upper part of the needle shaft is provided with a handle, the middle part of the needle shaft is provided with a screw thread matched with the nut, and the lower part of the needle shaft is provided with a pointed needle, and the needle shaft is connected to the nut through the nut. One end of the first straightedge is hinged with one end of the second straightedge; an arc-shaped square, which is provided with a fourth chute along its arc length direction, and one end of the arc-shaped square is connected to the first The straightedge is connected, the fourth chute of the arc-shaped protractor is hinged with the second straightedge through screws and nuts, and the center of circle of the arc-shaped protractor is located on the axis of the needle shaft. The invention is convenient for drawing triangles, regular polygons, circles and the like.

Description

Drawing Method Using Multifunctional Combined Drawing Instrument

technical field

The invention relates to a multifunctional combined drawing instrument.

Background technique

At present, traditional drawing instruments include straightedge, set square, arc-shaped protractor, compasses, etc., which are generally used to draw corresponding graphics individually; there are also new drawing instruments combined with some traditional drawing instruments on the market. But it is rare to have a drawing instrument that integrates all traditional drawing instruments, and it is generally not possible to directly draw a circle according to the size of the radius. In addition, there is currently no drawing instrument specially used for drawing regular polygons on the market, and generally only a few special regular polygons can be drawn on the basis of circles, which is extremely inconvenient to operate. Therefore be necessary to invent a kind of school supplies that gather straightedge, settable, curved protractor and regular polygon compasses drawing, use for drawing personnel such as students, teacher.

Contents of the invention

In view of the deficiencies in the prior art, the object of the present invention is to provide a multifunctional combined drawing instrument that integrates ruler, set square, arc protractor and regular polygon compasses. This multifunctional combined drawing instrument is convenient for drawing straight lines, triangles and regular polygons , round, etc.

In order to achieve the above object, the technical solution of the present invention is: a multifunctional combined drawing instrument, which includes: a first ruler, which is provided with a first chute along its length direction; a second ruler , the second ruler is provided with a second chute along its length direction; a third ruler is provided with a third chute along its length direction, and one end of the third ruler is passed through a screw and a nut It is hinged with the first chute of the first ruler, and the third chute of the third ruler is hinged with the second chute of the second ruler through screws and nuts; a needle shaft is arranged on the upper part of the needle shaft There is a handle, the middle part of the needle shaft is provided with a thread that matches the nut, and the lower part of the needle shaft is provided with a sharp needle, and the needle shaft hinges one end of the first ruler and one end of the second ruler together through the nut ; An arc protractor, this arc protractor is a circular segment with scale on the existing protractor, this arc protractor is provided with the 4th chute along its arc length direction, the arc protractor One end is detachably connected to the first ruler, a convex portion is provided on the lower side of one end of the arc-shaped measuring ruler, and a groove matching the convex portion is provided on the upper side of the first ruler. The four chutes are hinged with the second straightedge through screws and nuts. The center of the arc-shaped protractor is located on the axis of the needle shaft, and the commonly-used special regular polygon is marked on the arc-shaped protractor next to the corresponding scale; it also includes optional A pencil shaft matched with each chute, the upper part of the pencil shaft is provided with a thread matched with the nut, the lower part of the pencil shaft is equipped with a pencil lead, the pencil shaft and the needle shaft are provided for positioning each ruler The positioning shoulder; these nuts are wing nuts, and these nuts are also equipped with anti-loosening washers.

Compared with the prior art, the present invention has the following advantages: the multi-functional combined drawing instrument is not only simple to manufacture, low in production cost, but also easy to use, can be used in combination, disassembled and used alone or combined after disassembly, not only can draw Regular polygons and arbitrary triangles can be used to measure angles, and three straightedges can be connected to form an extended straightedge, and circles can be drawn according to the size of the radius.

Description of drawings

Fig. 1 is a schematic diagram of the structure of an embodiment of the present invention.

Figure 2 is a schematic diagram of the cooperation of screws and nuts.

Figure 3 is a schematic diagram of the cooperation of the pencil shaft and the nut.

Fig. 4 is a schematic diagram of cooperation between a sharp needle and a nut.

In the figure: 1-the first ruler, 1-1-the first chute, 2-the second ruler, 2-1-the second chute, 3-the third ruler, 3-1-the third chute , 4-screw, 5-nut, 6-needle shaft, 6-1-handle, 6-2-point needle, 7-curved protractor, 7-1-fourth chute, 8-pencil shaft, 8 -1-pencil lead, 8-2-pencil tip, 9-positioning shoulder, 10-through hole, 11-shaft sleeve.

Detailed ways

The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.

With reference to Fig. 1 ~ 4, a kind of multifunctional combined drawing instrument, it comprises: a first ruler 1, and this first ruler 1 is provided with the first chute 1-1 along its lengthwise direction; A second ruler 2 , the second ruler 2 is provided with a second chute 2-1 along its length direction; a third ruler 3, the third ruler 3 is provided with a third chute 3-1 along its length direction, the first One end of three rulers 3 is hinged with the first chute 1-1 of the first ruler 1 through screws 4 and nuts 5, and the third chute 3-1 of the third ruler 3 is connected with the third chute 3-1 through screws 4 and nuts 5. The second chute 2-1 of the second ruler 2 is hinged; a needle shaft 6, the top of the needle shaft 6 is provided with a handle 6-1, and the middle part of the needle shaft 6 is provided with a thread that matches the nut 5, The bottom of the needle shaft 6 is provided with a sharp needle 6-2, and the needle shaft 6 hinges one end of the first ruler 1 and the second ruler 2 through a nut 5, and the first ruler 1 and the second ruler 2 are hinged together. The hinge of two straightedges 2 is provided with a shaft sleeve 11, and the needle shaft 6 runs through the shaft sleeve 11; an arc-shaped protractor 7, which is provided with a fourth chute along its arc length direction, the arc-shaped protractor 7 is provided with a fourth chute, the One end of the arc protractor 7 is connected with the first ruler 1, and the fourth chute 7-1 of the arc protractor 7 is hinged with the second ruler 2 through the screw 4 and the nut 5. The arc protractor The center of circle of 7 is located on the axis of needle shaft 6. This arc-shaped protractor 7 is an arc segment with scale on the existing protractor.

In the present embodiment, the multifunctional combination drawing instrument also includes a pencil shaft 8, the upper part of the pencil shaft 8 is provided with a screw thread matched with the nut 5, and the lower part of the pencil shaft 8 is provided with a pencil core 8-1, and the user can The pencil head 8-2 can be unscrewed to replace the pencil core 8-1; the pencil shaft 8 can be matched with each chute, and the pencil shaft 8 and the needle shaft 6 are all provided with a positioning shoulder 9 to locate each ruler. In order to facilitate disassembly and assembly of the arc-shaped protractor 7, a convex portion is provided on the lower side of one end of the arc-shaped protractor 7, and a groove matching the convex portion is provided on the upper side of the first ruler 1, but it is not limited thereto . For the convenience of assembly and disassembly, the nuts 5 are wing nuts, but not limited thereto; the nuts 5 are also equipped with anti-loosening washers (not shown in the figure). For the convenience of connection, through holes 10 are provided at both ends of each ruler. For the convenience of drawing several commonly used special regular polygons, the arc protractor 7 can be marked with "positive five", "positive six" and so on beside the corresponding scale, and the user can quickly adjust the drawing instrument to the desired state.

The working process of the present utility model is as follows: the multifunctional combination drawing instrument can adjust the angle between the first ruler 1 and the second ruler 2 to draw triangles and regular polygons of different shapes and sizes by adjusting these nuts 5 . For example, when drawing a regular polygon, three rulers surround an isosceles triangle, wherein the inner side of the first ruler 1 is used as the first waist, the inner side of the second ruler 2 is used as the second waist, and the third ruler 2 is used as the second waist. The inner side of the straightedge 3 is used as the base of the isosceles triangle, and the inner angle of the regular polygon can be calculated by the formula (n-2) × 180°÷n. By adjusting the curved protractor and the second straightedge 2 Nut, so that the angle between the first ruler 1 and the second ruler 2 is equal to the inner angle of the regular polygon to be drawn, and now draw the inner side of the third ruler 3 corresponding to the inner angle, that is, the base of the isosceles triangle , this base is exactly the first side of the regular polygon to be drawn, and the whole drawing instrument is rotated rightward with the sharp needle 6-2 as the center of circle, so that the vertex of the included angle between the first waist and the base corresponds to the first drawn just now Draw the right endpoint of one side, then draw the second side of the regular polygon, draw the other sides of the regular polygon in this way, you can get the regular polygon you want to draw. Another example is when drawing a circle, the third ruler 3 and the needle shaft 6 can be disassembled by this multifunctional combined drawing instrument, the needle shaft 6 is installed on one end of the third ruler 3, and the third slide of the third ruler 3 Install pencil shaft 8 in the groove 3-1, just can use as compasses to draw the circle of different radius size. In addition, the multifunctional combined drawing instrument can also disassemble three straightedges and arc protractors, and connect them into a long straightedge through screws 4 and nuts 5, which can draw straight lines of different lengths; , the screws 4 and nuts 5 can be disassembled, and the instruments can be combined to reduce the occupied space.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (1)

1. adopt a drawing practice for Multifunctional assembled drawing instrument device, it is characterized in that, this Multifunctional assembled drawing instrument device comprises:

One first ruler, this first ruler offers the first chute along its length;

One second ruler, this second ruler offers the second chute along its length;

One the 3rd ruler, 3rd ruler offers the 3rd chute along its length, one end of 3rd ruler is hinged by the first chute of screw and nut and the first ruler, and the 3rd chute of the 3rd ruler is hinged by the second chute of screw and nut and the second ruler;

One needle shaft, the top of this needle shaft is provided with lever, the middle part of this needle shaft is provided with the screw thread matched with nut, the bottom of this needle shaft is provided with prong, this needle shaft by nut by hinged for one end of one end of the first ruler and the second ruler, the hinged place of this first ruler and the second ruler is provided with axle sleeve, and this needle shaft is through this axle sleeve;

One arc angle square, this arc angle square is standing crop hornwork is with a graduated circular arc section, this arc angle square offers the 4th chute along its arc length direction, one end of this arc angle square and the first ruler releasable connection, protuberance is provided with on the downside of one end of this arc angle square, the upside of this first ruler offers the groove matched with protuberance, 4th chute of this arc angle square is hinged by screw and nut and the second ruler, the center of circle of this arc angle square is positioned on the axis of needle shaft, at the special regular polygon that the other mark of corresponding scale is conventional on this arc angle square,

Also comprise a pencil shaft that can match with each chute, the top of this pencil shaft is provided with the screw thread matched with nut, and the bottom of this pencil shaft is provided with removable pencil-lead, and this pencil shaft and needle shaft are equipped with to locate each the location shaft shoulder of ruler; Those nuts are wing nut, and those nuts are also configured with check washer;

This Multifunctional assembled drawing instrument device is by regulating those nuts to adjust the angle of the first ruler and the second ruler to draw the straight line of the regular polygon of difformity and size, the circle of different radii size and different length size, specific as follows:

When drawing regular polygon, three rulers are surrounded an isosceles triangle, wherein the inner side edge of the first ruler is as the first waist limit, the inner side edge of the second ruler is as the second waist limit, the inner side edge of the 3rd ruler is as the base of isosceles triangle, the interior angle number of regular polygon is calculated by formula (n-2) × 180 ° ÷ n, by regulating the nut above arc angle square and the second ruler, the angle of the first ruler and the second ruler is made to equal to draw the interior angle of regular polygon, now draw the inner side edge of the 3rd ruler corresponding to this interior angle lower, the i.e. base of isosceles triangle, this base is exactly the Article 1 limit of the regular polygon that will draw, be that the center of circle is to the whole drawing instrument of right rotation with prong, make the right endpoint just having been drawn the Article 1 limit of getting off by the angle vertex correspondence on the first waist limit and base, draw the Article 2 limit of regular polygon again, Using such method draws other limits of regular polygon, just obtain the regular polygon that will draw,

When drawing circular, the 3rd ruler and needle shaft are disassembled, installs needle shaft in one end of the 3rd ruler, in the 3rd chute of the 3rd ruler, install pencil shaft, use with the circle drawing different radii size as compasses;

When drawing straight line, three rulers and arc angle square are disassembled, and connect into a long ruler by screw and nut, draw the straight line of different length size.