CN201362105Y - Multifunctional diagraph for students - Google Patents

Abstract

The utility model discloses a multifunctional diagraph for students for drawing graphs. The diagraph is characterized in that a slideway collinear with a point setter and a movable point setter on the slideway are arranged on a soleplate of an existing quick graph plotter, and a card coater consisting of two groups of rectangular die holes is arranged below the slideway of the movable point setter. Added with the slideway, the movable point setter arranged on the slideway and the card coater, the diagraph enables a student to draw various graphs like circles, inscribed circles, triangles, inscribed circles of triangles, circumcircles of triangles, sectors, equilateral polygons, five-pointed stars as well as geometric figures and to selectively draw a plurality of different ellipses with different semi-major axis and different minor semi-axis, and the diagraph can also facilitate the student to coat an optical mark card. The diagraph has reasonable structure and design and multiple functions and can draw graphs quickly and is convenient for the student to use. The diagraph is economic and practical and is suitable for application and popularization.

Description

The student uses diagraph more

Technical field:

The utility model relates to the instrument that a kind of student draws and uses, and particularly relates to a kind of multi-functional student's drawing instrument.

Background technology:

For a long time, the student is the ruler of function singleness with chi always, and in order to satisfy the needs that the demand of student with chi, particularly junior-high school student are mapped, various multifunctional rulers (being also referred to as figure device or plotter) are met fortune and given birth to.A kind of QuickDraw instrument of Chu Shouing is exactly one of them in the market.This QuickDraw instrument is made up of base plate, point setter and vernier three parts.Base plate is made up of the protractor that fuses, rule, which is provided with parabola, hyperbola, circle and oval nib, and point setter is made up of fixed-point needle, fixed point seat, spring and pressure cap; Fixed-point needle can be pressed and upspring automatically.Vernier moves on the horizontal slideway of base plate and is fixed by screw.Formation pen stand in chi junction in chi and the upper left corner and the rule in the outstanding rule in vernier upper edge.This QuickDraw instrument can be used to picture angle, circle, polygon, polyhedron complex figure, identical circle, ellipse, parabola and hyperbola also can draw by the nib on the base plate, but the ellipse that can't draw and vary in size, nor carry out card-coating when making things convenient for student's answer.

Summary of the invention:

The utility model is in order to provide a kind of student to use diagraph more, mainly is to solve the ellipse that existing plotter can not draw and vary in size, and carries out graph card, the problem that function is incomplete during also inconvenient student's answer.

Scheme of the present utility model is as described below: this utility model comprises the base plate that is made of protractor, rule, parabola on the base plate, hyperbola nib, and point setter, slideway, vernier, screw and pen stand, it is by being provided with on the base plate and the portable point setter of point setter on slideway on the same straight line and slideway, and establishes the card-coating device that the square nib of two group leaders is formed below this its slideway of movable type point setter.

The beneficial effects of the utility model: this utility model is owing to setting up the portable point setter on slideway, the slideway and the structure of card-coating device on the prior art basis, make the student when mapping, can draw out the different ellipse of a plurality of long and short semiaxis selectively, can bring convenience for the answer card-coating again simultaneously.This utility model also have reasonable in design, multi-functional in one, mapping quick and precisely, make things convenient for that the student uses, not only economy but also practicality, advantage such as be fit to apply.

Description of drawings:

Fig. 1 is the overall structure figure that the student uses diagraph more;

Fig. 2 is the portable point setter structural representation that the student uses diagraph more.

The specific embodiment:

Use diagraph by student shown in Figure 1, be improved a kind of novel student drawing instrument on existing QuickDraw instrument basis more.It comprises the base plate 1 that is made of protractor, rule, the parabola on base plate 1, hyperbola nib 2,3, and center point setter 4, slideway 5 and vernier 6, vernier 6 flexibly connects and fixes through screw 7.Different is also to be provided with on the base plate 1 and the portable point setter 9 of point setter 4 on slideway on the same straight line 8 and slideway 8, described portable point setter 9 is stairstepping open tubular column bases of being established centre bore by the bottom, establish the adapter sleeve of the gland composition of centre bore through the top that is threaded, the mobile pin formation that an end cap protrusion gland and needle body outside are with spring is set in adapter sleeve.Below these movable type point setter 9 its slideways 8, establish the card-coating device of forming by the square nib 10 of two group leaders.

Utilize the utility model can draw multiple complex figure such as circle, ellipse, inscribed circle, triangle, triangle inscribed circle, triangle circumscribed circle, fan-shaped, regular polygon, five-pointed star, solid geometry figure and can carry out the answer card-coating.The mapping and the card-coating process in, except drawing ellipse, its drawing method is basic identical with described QuickDraw instrument.Will not tire out at this and to state.When drawing ellipse, for example to draw a semi-minor axis R=2cm, the ellipse of major semiaxis R=4cm, adjusting vernier 6 earlier makes it move to rule 2cm position, it is fixing with vernier 6 to screw screw 7, portable point setter 9 on the mobile again slideway 8, make portable point setter 9 and center point setter 4 be 2cm position and fixing, then nib is leaned against on the pen stand (this pen stand can identically with the QuickDraw instrument also can established a concave indentation as pen stand in addition on the vernier) 11, utilize the method left hand of picture circle to press center point setter 4,90 ° of circular arcs of R=2cm draw, pen is motionless, and left hand is pressed downward moving point setter 9,90 ° of circular arcs of the R=4cm that draws continuously, repeat above-mentioned action draw continuously 90 ° of circular arcs of R=2cm and 90 ° of circular arcs of R=4cm again, so just at an easy rate with the utility model ellipse that drawn.Very convenient to use, accurate, quick.

Claims (2)

1, a kind of student uses diagraph more, comprise the base plate (1) that constitutes by protractor, rule, parabola on the base plate (1), hyperbola nib (2,3), and point setter (4), slideway (5), vernier (6), screw (7), pen stand (11), it is characterized in that: be provided with on the base plate (1) and the portable point setter (9) of point setter (4) on slideway on the same straight line (8) and slideway (8), and be provided with the card-coating device of forming by the square nib of two group leaders (10) in the below of this its slideway of movable type point setter (9) (8).

2, student according to claim 1 uses diagraph more, it is characterized in that: portable point setter (9) is a stairstepping open tubular column base of being established centre bore by the bottom, establish the adapter sleeve of the gland composition of centre bore through the top that is threaded, the mobile pin formation that an end cap protrusion gland and needle body outside are with spring is set in adapter sleeve.

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