CN201257856Y

CN201257856Y - Multi-functional angulometer

Info

Publication number: CN201257856Y
Application number: CNU2008201900303U
Authority: CN
Inventors: 张磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-29
Filing date: 2008-07-29
Publication date: 2009-06-17
Anticipated expiration: 2018-07-29

Abstract

A multifunctional angle gauge solves the problems of the prior angle gauge that the function is simplex, and the angle gauge is used in coordination with a triangular rule, the multifunctional angle gauge is characterized in that the angle gauge comprises two congruent isosceles right triangles with ruler sides (1, 2) and two congruent arc-shaped plates (3, 4), rulers (5, 6) carved with length marks are arranged on the right-angle side of the isosceles right triangles (1, 2), 0 to 180 degrees of the angle mark is carved on the arc-shaped plates (3, 4) respectively, two ends of the other right-angle side of the isosceles right triangles (1, 2) are mutually hinged together, and two ends of a bevel edge are mutually hinged with the arc-shaped plates (3, 4) respectively. When not in use, the multifunctional angle gauge can be folded into a very small triangle to store, and when in use, the multifunctional angle gauge can be expanded into a right-angle ruler or the angle gauge to facilitate the use upon the requirements.

Description

Multi-function protractor

One, technical field

The utility model belongs to a kind of study article, relates in particular to a kind of multi-function protractor that can draw various triangular.

Two, background technology

At present, apparatus protractor as teaching and study, simple in structure, purposes is single, only can draw straight line, circular arc and take measurement of an angle, teacher wants to finish mathematical education and student when finishing geometrical equivalence and learning operation, must be with supporting uses such as protractor and set squares, so neither be convenient for carrying, use also trouble.

Three, summary of the invention

The purpose of this utility model is to provide a kind of multi-function protractor that can draw straight line and various triangular for market.Its technical scheme is: protractor is made up of the isosceles right triangle on two congruence band ruler limits and the arc of two congruences, one right-angle side of isosceles right triangle is provided with the ruler that is carved with length mark, be carved with 0～180 ° angle mark on the arc respectively, the two ends of another right-angle side of isosceles right triangle are hinged together mutually, and the hypotenuse two ends are hinged with arc two respectively.The centre of an isosceles right triangle is provided with the obtuse triangle and the right angled triangle of hollow out, and the centre of another isosceles right triangle is provided with the hollow out equilateral triangle.

The beneficial effects of the utility model are: scientific and reasonable for structure, diverse in function is possessing outside the function of protractor, has increased the leg-of-mutton function of picture different shape, integrates protractor and set square function.

Below in conjunction with accompanying drawing the utility model is further described.

Four, description of drawings

Fig. 1 is the utility model structural representation.

Among the figure: 1,2 isosceles right triangles, 3,4 are carved with the arc of radian mark, 5,6 scale length mark rulers, 7 hollow out obtuse triangles, 8 hollow out right angled triangles, 9 hollow out equilateral triangles.

Five, specific embodiments

Choose transparent plastic and make the isosceles right triangle 1,2 of two congruences, be provided with the ruler 5,6 of carving people's length mark on the one bar right-angle side, obtuse triangle 7 of hollow out and a right angled triangle 8 in the middle of triangle 1, the two-end-point of another right-angle side of 9, two isosceles right triangles of an equilateral triangle of hollow out is hinged mutually and is integral in the middle of triangle 2.The two-end-point of its hypotenuse is hinged with the straight flange two ends of the arc 5,6 that is provided with scale mark respectively, constitutes a complete protractor.When implementing the utility model, launch to be a protractor as shown in Figure 1 fully, can measure angular dimension, when with 3, the 4 inside foldings of two arcs an isosceles right angled triangle, when the square use, the while can also be utilized obtuse angle, right angle and the equilateral triangle that the various triangular of hollow out is drawn to be needed.Not the time spent, it is prolonged the vertical line doubling, can be reduced into a very little triangle, be convenient to carry and store.

Claims

1, a kind of multi-function protractor, it comprises length and angle mark, it is characterized in that: protractor is made up of the isosceles right triangle (1,2) on two congruence band ruler limits and the arc (3,4) of two congruences, one right-angle side of isosceles right triangle (1,2) is provided with the ruler (5,6) that is carved with length mark, arc is carved with 0～180 ° angle mark respectively on (3,4), the two ends of another right-angle side of isosceles right triangle (1,2) are hinged together mutually, and the hypotenuse two ends are hinged with arc (3,4) two respectively.

2, multi-function protractor according to claim 1, it is characterized in that: the centre of isosceles right triangle (1) is provided with the obtuse triangle (7) and the right angled triangle (8) of hollow out, and the centre of isosceles right triangle (2) is provided with hollow out equilateral triangle (9).