CN201275954Y

CN201275954Y - Multifunctional graphometer for student

Info

Publication number: CN201275954Y
Application number: CNU2008200269041U
Authority: CN
Inventors: 刘树明
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-20
Filing date: 2008-08-20
Publication date: 2009-07-22
Anticipated expiration: 2018-08-20

Abstract

The utility model belongs to a novel learning utensil combining the functions of the traditional semicircles, compasses, rulers, triangular rulers, parallel lines and protractors. The novel learning utensil comprises a semicircle 1, a pencil hole 2, a rotary rod 3, a hollowed triangle 4, a hollowed triangle 5, a ruler 6, a rotary axle center 7 and the like. The semicircle 1 is made of high rigidity transparent plastic, and is provided with graduations for angle measurement. The pencil hole 2, the rotary rod 3 and the rotary axle center 7 form a whole body of high rigidity transparent plastic to be arranged above the semicircle. The rotary axle center 7 is arranged in the circle center, and is rotatable. The pencil hole 2 is arranged just above the outer margin of the semicircle, and the rotary rod 3 is connected with the pencil hole 2 and the rotary axle center 7. The ruler 6 is arranged at the diameter of the semicircle. The hollowed triangle 4 and the hollowed triangle 5 are arranged at the upper part of the ruler 6, the hollowed triangle 4 is an isosceles right-angled triangle, and three angles of the hollowed triangle 5 are respectively 90 DEG, 60 DEG and 30 DEG, wherein the hollowed triangle 4 and the hollowed triangle 5 have two parallel right-angle sides.

Description

The multifunctional student graphometer

Technical field:

The utility model belongs to a kind of novel learning aid that has merged traditional semicircle, compasses, ruler, set square, parallel lines, protractor function.

Background technology:

Take measurement of an angle, length, drawing semicircle, circle, triangle, parallel lines instrument is often to use during the student draws, how convenient, accurate, directly has influence on the efficient of student's study.At present the above-mentioned instrument that uses mostly is traditional compasses, ruler, set square, protractor etc., and function singleness is carried inconvenience, and the production cost height can not satisfy the needs that the student draws.

Be badly in need of in student's drawing course a kind of can merge take measurement of an angle, length, draw the learning aid of multiple functions such as semicircle, circle, triangle, parallel lines, improve learning efficiency.

Summary of the invention:

Main task of the present utility model provides a kind of traditional semicircle, compasses, ruler, set square, protractor, parallel lines function of merging for the student draws, and can take measurement of an angle, length, draws the learning aid of multiple functions such as semicircle, circle, triangle, parallel lines.

The utility model is achieved in that it makes with the high-hard, transparent plastics, and by semicircle, pencil hole, swingle, axis of rotation, ruler, two seven parts such as hollow out triangle constitute.Have scale on the semicircle, can take measurement of an angle.Have scale on the ruler, can measure length.Pencil is inserted the pencil hole, along the outer rotation of semicircle, but driven rotary bar, axis of rotation, semicircle and circle draw rapidly.Pencil inserts the hollow out triangle, two triangles that can directly draw along interior edge, and one is isosceles right triangle, one for comprising the right angled triangle at 30 degree, 60 degree angles.Along two legs, parallel lines can draw.

Advantage of the present utility model is: merges traditional semicircle, compasses, ruler, set square, parallel lines, protractor function in one, uses simply, and easy to carry, help improving student's learning efficiency; The huge market demand, production cost is low, is convenient to marketing.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Among Fig. 1, the 1st, semicircle, the 2nd, pencil hole, the 3rd, swingle, the 4, the 5th, hollow out triangle, the 6th, ruler, the 7th, axis of rotation.

The specific embodiment:

In conjunction with the accompanying drawings embodiment of the present utility model is described further: have scale on the semicircle 1, can take measurement of an angle.Have scale on the ruler 6, can measure length.Pencil is inserted pencil hole 2, along the outer rotation of semicircle 1, but driven rotary bar 3 and axis of rotation 7, semicircle and circle draw rapidly.Pencil inserts hollow out triangle 4, hollow out triangle 5, two triangles that can directly draw respectively along interior edge, and one is isosceles right triangle, one for comprising the right angled triangle at 30 degree, 60 degree angles.Along the right-angle side of hollow out triangle 4 and hollow out triangle 5, parallel lines can draw.

Claims

1, the multifunctional student graphometer, it is characterized in that: by semicircle (1), pencil hole (2), swingle (3), hollow out triangle (4), hollow out triangle (5), ruler (6), axis of rotation seven parts such as (7) constitute, semicircle (1) is made with the high-hard, transparent plastics, have the scale that angulation is used above, pencil hole (2), swingle (3), axis of rotation (7) is a high-hard, transparent plastic monoblock, be positioned at semicircle (1) top, it is rotatable that axis of rotation (7) is positioned at the center of circle, pencil hole (2) is positioned at directly over semicircle (1) outer, swingle (3) connects pencil hole (2) and axis of rotation (7), ruler (6) is positioned at the diameter of semicircle (1), hollow out triangle (4), hollow out triangle (5) is positioned at the top of ruler (6), hollow out triangle (4) is a right angled isosceles triangle, three angle numbers of hollow out triangle (5) are respectively 90 degree, 60 degree, 30 degree, wherein hollow out triangle (4) has two right-angle sides parallel with hollow out triangle (5).