CN2288850Y

CN2288850Y - Multifunctional trinagle for drawing

Info

Publication number: CN2288850Y
Application number: CN 96200873
Authority: CN
Inventors: 李守瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-22
Filing date: 1996-05-22
Publication date: 1998-08-26
Anticipated expiration: 2006-05-22

Abstract

The utility model discloses a multifunctional triangle which relates to an appliance used for drawing for students and teachers, particularly a triangle. The multifunctional triangle solves the problems that an ordinary triangle can not be used for drawing an angle with a known degree and a circle with a known radius. The multifunctional triangle has the proposal that the edge of the outer side of the hypotenuse of the multifunctional triangle is provided with scale areas used for drawing the length of a line segment and scale areas used for drawing the part angle of dullness. The edge of the inner side of the hypotenuse is provided with scale areas used for drawing the angle of an acute angle. The edge of the outer side of the edge of a right angle is provided with scale areas used for drawing the angle of an obtuse angle. The edge of the inner side of the edge of the other right angle is provided with scale areas used for determining the length of the radius of the circle. An outer side is provided with an obvious bulge and one end of the bulge is provided with a dark room. The vertical surface of the bulge is provided with a plurality of small holes which are evenly distributed. A pencil lead (or a chalk) and an iron nail are taken out of the dark room and are inserted into the small holes to draw the circle which is accordant with requirements.

Description

Degree, angle, rule set square

The utility model relates to a kind of student, teacher, the apparatus when other technical staff maps: set square.

Student, teacher, when other technical staff maps, when particularly the student maps, often use set square.Draw the angle if desired, draw bowlder, set square just can not have been satisfied the demand, and need use protractor and compasses, and apparatus is many, inconvenience.

For addressing this problem, the central authorities that protractor are designed into set square that have unite two into one set square, protractor, though more original set square advanced person, it still can't draw circle.

Order of the present utility model ground is that a kind of improved isosceles drawing square will be provided, and it can not only the setting-out section, the angle, and can also draw circle.

Be achieved in that on the outer side edges of set square hypotenuse that the length scale zone is arranged order of the present utility model, be used for the line segment of picture known length; On the inner side edge of set square hypotenuse, 0 °-90 ° angle index zone is arranged, be used for the acute angle of the known number of degrees of picture; On the outer side edges of a right-angle side, and and the hypotenuse outer side edges that intersects of this limit near on the intersection point part, the angle index zone is all arranged, be used for the obtuse angle of the known number of degrees of picture; The length scale zone is arranged, when drawing bowlder, available definite radius on the inner side edge of another right-angle side; The outside of this right-angle side is obvious overshooting shape, makes this part be thicker than other parts, the outside at jut, be on the risers of this right-angle side, correlating inboard scale and be drilled with many apertures equably that one end of projection is a hollow, form the darkroom, be used to put pencil-lead (or chalk) and iron nail,, take out pencil-lead (or chalk) and iron nail when drawing bowlder, be respectively charged in the hole of facade the circle of the known radius of can drawing.

The utility model has been owing to realized that degree, angle, rule are three-in-one, and kept the triangle external form, so suitable student, teacher, other technical staff uses, and a kind of whereby apparatus can be made the figure of general requirement; Simultaneously, the utility model is to improve slightly on former set square, and is relatively simple for structure.

The concrete structure of utility model is provided by following embodiment and accompanying drawing

Fig. 1 is that Fig. 2 is the elevation that the utility model has the right-angle side lateral surface of projection according to the degree that the utility model proposes, the plane of angle gauge set square.

Describe details and working condition in detail below in conjunction with Fig. 1, Fig. 2 according to the set square that the utility model proposes.

This set square is made up of hypotenuse (1) and two right-angle sides (2,3), length scale zone (4) and angle index zone (5) are arranged on the outer side edges of hypotenuse (1), angle index zone (6) is arranged on the inner side edge, angle index zone (7) is also arranged on the outer side edges of right-angle side (2), scale in the scale zone (6) distributes wherein along the scale of the direction of arrow by 0 °-90 °, scale in scale zone (5) and (7) distributes wherein along the scale of the direction of arrow by 90 °-180 °, and the graduation mark extended line of these scales all intersects at interior summit, right angle (8).On another right-angle side (3) inner side edge length scale zone (9) is arranged, there is tangible projection (10) in the outside, at an end of projection one dark empty (11) is arranged, and is uniform-distribution with many apertures (12) on the facade of projection.

When the setting-out section, can finish according to the length scale on the hypotenuse outer side edges (4); When being initial line picture angle with line segment AB, allow the interior summit, right angle (8) of set square overlap with some A, right-angle side (3) inner side edge overlaps with line segment AB, in angular regions (5), (6), (7), find out satisfactory number of division then, and mark with a bit, at last, only need should point with put A and couple together this angle of can drawing; Utilize projection (10) to draw bowlder, only need earlier the iron nail in the darkroom to be taken out, put into scale zone (9) in " 0 " scale according to aperture in, again pencil-lead (or chalk) is taken out, with reference to the scale in scale zone (9), put into suitable hole, can iron nail be the center of circle promptly, rotation right-angle side (3), satisfactory circle draws.Aperture on the projection facade, two of two ends respectively with scale zone (9) in the graduation mark at two ends correlate, middle aperture keeps at a certain distance away and evenly distributes.Scale in the scale zone (9) preferably " 0 " scale overlaps with summit, interior right angle (8), is respectively other scales such as 1,2,3 along the direction of arrow then.

Claims

1, degree, the angle, the rule set square has the right-angle side (2 of a hypotenuse (1) and two equal in length, 3), one length scale zone (4) is arranged on the hypotenuse outer side edges, it is characterized in that angle index zone (5) is also arranged on the hypotenuse outer side edges, angle index zone (6) is arranged on the hypotenuse inner side edge, article one, on the outer side edges of right-angle side (2) angle index zone (7) is arranged, length scale zone (9) is arranged on the inner side edge of another right-angle side (3), there is an obvious projection (10) in the outside of this right-angle side, one end of projection has darkroom (11), is evenly distributed with many apertures (12) on the facade of projection.

2, degree according to claim 1, angle, rule set square, it is characterized in that the angle that the angle index zone (5) on the hypotenuse outer side edges is indicated is the obtuse angle, the angle that angle index zone (6) on the hypotenuse inner side edge is indicated is an acute angle, article one, the angle indicated of the angle index zone (7) on the outer side edges of right-angle side (2) is the obtuse angle, the graduation mark extended line of all angle indexs is even meet in summit, right angle (8).

3, degree according to claim 1, angle, rule set square, it is characterized in that the many apertures that distributing equably that keep at a certain distance away on the facade of a right-angle side (3) outside projection, two apertures at two ends respectively with length scale zone (9) in the graduation mark at two ends correlate mutually.

4, degree according to claim 1, angle, rule set square is characterized in that projection one end has the compact darkroom of placing iron nail of an energy.