CN2091775U

CN2091775U - Multifunctional drawing board as substitute for campasses

Info

Publication number: CN2091775U
Application number: CN 91203118
Authority: CN
Inventors: 周向
Original assignee: Individual
Current assignee: Zhou Xiang
Priority date: 1991-02-28
Filing date: 1991-02-28
Publication date: 1992-01-01

Abstract

The utility model provides a drawing board which can completely replace the functions of a straight ruler, a pair of compasses and an angle meter. The radius precision of a round drawn by the utility model can reach 0.5 mm and completely conforms to utility needs in normal times, and a ball pen, a signing pen, a water color pen, etc. can be used for drawing the round. The drawing board is mainly characterized in that circular arc lines with various radius and round drawing mold holes with various radius are distributed on a common angle meter, and the periphery of the common angle meter can form a triangle, a semicircle, a rectilinear shape, etc. or the combination. The utility model is suitable for being used for teachers, students, drawing persons, scientific workers, art designing persons, etc.

Description

Multifunctional drawing board as substitute for campasses

The utility model relates to a kind of multifunctional drawing plate.

At present, when the student makes various figure in each subject such as study of numbers, physics, drawing, use general drawing tools such as ruler, compasses, protractor mostly.Instrument was both many, just lose easily, and student's writing case plug got very full, or just fails to lay down at all.In addition, we need some circles of picture and/or circular arc as decorative pattern sometimes, but general compasses can only be with pencil or pen, and can not use ball pen, signature or watercolor stroke, do not satisfy the needs of this respect.The teacher also has similar problem on class.

For this reason, the purpose of this utility model provides a kind of drawing board that can replace ruler, protractor, compasses function fully, and it makes the radius of circle precision can reach 0.5mm, and available ball pen, signature pen, watercolor pencil etc. are justified.

The purpose of this utility model realizes in the following manner:

1, a kind of multifunctional drawing plate that replaces compasses is characterized in that its plate face comprises: have the circle of engraved structure and the numerical symbol (1) of centering line, radius and/or diameter thereof; Common protractor is (2) partly; Be distributed in work circle nib, the circular arc line of variant radius and the numerical symbol (3) of radius and/or diameter thereof on (2); Line (4) between the one group of numerical symbol of making circle nib and radius and/or diameter and nib; Length metering unit's scale (5) of rectangular part and straight flange on the periphery; Be the linear part of wave (6) on the periphery.

2, the combination that linearly shape, wave are linear of the periphery of described drawing board or the combination of linear, the linear semicircle of wave and/or triangle and/or shaped form (comprising conic section shape).

3, described drawing board is by the part combination of plastics or celluloid, lucite, plastic-coated hardfaced plate, timber, metallic plate, rubber etc. or above-mentioned each material.

Advantage of the present utility model and characteristics are:

(1) can replace compasses fully.It makes the radius of circle precision can reach 0.5mm, meets general at ordinary times mapping needs fully.

(2) integrate functions such as ruler, compasses, protractor, be easy to carry, and can be cheap.

(3) student not only, and use the utility model such as other any drawing personnel, teacher, scientific worker, art designing all can be benefited.

Fig. 1 is the front view (ratio: 2:1) of the embodiment 1--multifunctional drawing plate (semicircle ruler shape) that can replace compasses.

Fig. 2 is the structural representation (ratio: 1:1) of facing of the embodiment 2--multifunctional drawing plate (set square shape) that can replace compasses.

How to realize below in conjunction with accompanying drawing and specific embodiment elaboration the purpose of this utility model.

As shown in Figure 1, each component part of this embodiment 1 comprises: have the circle of engraved structure and the numerical symbol (1) of centering line and radius thereof; Common protractor is (2) partly; Be distributed in work circle nib, the circular arc line of variant radius and the numerical symbol (3) of radius thereof on (2); Line (4) between the one group of numerical symbol of making circle nib and radius thereof and nib independently; Length metering unit's scale (5) of rectangular part and straight flange on the periphery; Be the linear part of wave (6) on the periphery; The symbol " Rmm " (7) of expression radius and numerical symbol unit's (millimeter) thereof.Wherein (3) specify as follows: the semicircle circle centre position of protractor (2) is a nib, and this is as center of circle nib; Right semi-circle (0～90 part that the radian scale is counterclockwise) in (2), have seven 1/4 circular arc lines, its radius is followed successively by 5mm, 10mm from inside to outside, 35mm, and except that radius 5mm camber line, every camber line and radian scale 0(180) line intersection point place is a nib, these nibs are followed successively by 10mm from inside to outside to the distance of center of circle nib, 15mm ..., 35mm.Between radius 10mm camber line and radius 15mm camber line, four nibs are arranged, respectively at radian graduation mark 20(160), 40(140), 60(120), 80(100) on, it is respectively 11mm, 12mm, 13mm, 14mm to center of circle nib distance.In like manner analogize, just can on right semi-circle, be implemented to center of circle nib distance and be respectively 10mm, 11mm ..., each nib of 35mm.In like manner, on the left semicircle of (2), be implemented to center of circle nib distance and be respectively 10.5mm, 11.5mm, 12.5mm ..., each nib of 35.5mm.

Set forth each part function of this draughting board below:

Utilizing (1) can be 1.5mm as radius, 2mm, and 2.5mm ..., the circle of 4.5mm, and can utilize its centering line centering; Utilizing (2) can make protractor uses; Utilizing (3) can be 10mm as radius, 10.5mm, 11mm,, the circle of 35.5mm: drawing board is reclined on the paper, the semicircle center of circle nib of (2) on the drawing board is aimed to do the home position of justifying, proficiency is taken one-pen to make nib stretch into center of circle nib and is compressed paper, another hand takes other one-pen to stretch into another nib (making this nib equal to do the radius of circle to the distance of center of circle nib), and makes drawing board rotate a week around the center of circle, simultaneously this pen desired circle that promptly draws on paper.Similar this method, utilizing (4) can be 5mm as radius, 5.5mm, 6mm ..., the circle of 9.5mm, only its home position becomes with radius; Utilize (5) can make ruler and use, can make rectangular coordinate system etc.; Draw emphasis when utilizing (6) can do wave, wave wire frame, do brief summary as study, the picture case uses.It is very convenient to utilize (2) and (3) to make polar coordinate system.

As shown in Figure 2, in each component part of this embodiment 2, with embodiment 1, therefore should adopt simplified painting by figure from every content of (1)～(7).Its additional portions is: the semicircular ring (8) that has engraved structure; Be 45 partly (9) on the periphery.The function of this embodiment has except all functions with embodiment 1 in addition: utilize (9) can make 45 easily; Utilize (9) and (5) can make isosceles right triangle easily.Utilize embodiment 2 and another right angle triangle set square that can partner with 30 ° of angles.

Claims

1, a kind of multifunctional drawing plate that replaces compasses is characterized in that its plate face comprises: have the circle of engraved structure and the numerical symbol [1] of centering line, radius and/or diameter thereof; Common protractor is [2] partly; Be distributed in work circle nib, the circular arc line of variant radius and the numerical symbol [3] of radius and/or diameter thereof on [2]; Line [4] between the one group of numerical symbol of making circle nib and radius and/or diameter and nib; Length metering unit's scale [5] of rectangular part and straight flange on the periphery; Be the linear part of wave [6] on the periphery.

2, multifunctional drawing plate as claimed in claim 1 is characterized in that combination that linearly shape, wave are linear of its periphery or linear, wave are linear, the combination of semicircle and/or triangle and/or shaped form (comprising conic section shape).

3, multifunctional drawing plate as claimed in claim 1 or 2 is characterized in that its material is the part combination of plastics or celluloid, lucite, plastic-coated hardfaced plate, timber, metallic plate, rubber etc. or above-mentioned each material.