CN2053989U

CN2053989U - Multifunction simple drawing instrument

Info

Publication number: CN2053989U
Application number: CN 89216465
Authority: CN
Inventors: 李昂
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-09-08
Filing date: 1989-09-08
Publication date: 1990-03-07

Abstract

The utility model discloses a multifunction simple drawing instrument, belonging to a drawing appliance; the utility model comprises a straightedge, a semi-circle instrument and an angle square; a sliver shape slide track paralleled with a side edge is arranged at the middle part of the straightedge; a vernier is arranged on the slide track, and the middle part of the vernier aims at a thorough hole arranged at the slide track; one end of the straightedge is provided with a rotation screw, and the other end is fixedly connected with the semi-circle instrument; one end of the angle square is connected with the center of the circle of the semi-circle instrument, and the two are rotatably fitted; thus the angle of optional known angle can be drew; a circle is drew on the surface of the semi-circle instrument, and is tangential with both edges of the angle; the internal bisector can be drew up by connecting the vertex of the angle and the center of the circle; the utility model can be used for drawing a straight-line, an angle, an internal bisector, a circle, etc., and can also measure the angle and the radian; the function is multiple, and the operation is easy.

Description

Multifunction simple drawing instrument

The utility model belongs to a kind of student's drawing appliance.

The Geometric figure drawing apparatus that existing student uses, as set square, graphometer, compasses, ruler etc., every kind of function is all single, since more scattered, thereby carry also inconvenient.Particularly the price of compasses is expensive, get all the above-mentioned drawing appliance ready, can cause the certain economic burden to the student.

The purpose of this utility model is for the student provides a kind of easy multifunctional drawing apparatus, and is not only easy to carry, and can alleviate student's financial burden.

The utility model is to realize above-mentioned purpose like this:

It is made up of the ruler (1) of band scale, the graphometer (2) of band angle index and the angle square (3) that can rotate around graphometer (2) center of circle.The straight flange of above-mentioned ruler (1) one side and graphometer (2) is located along the same line, then that ruler (1) one end and graphometer (2) is together fixed.Partly have the long narrow bar shaped slideway (4) that sees through whole chi thickness parallel in the middle of the ruler (1) with ruler (1) side, a vernier (5) that can move around along ruler (1) is arranged on it, and there is a through hole (6) at the position of vernier (5) intermediate alignment slideway (4).Ruler (1) one end also has a through hole, and the sharp screw (7) of a band is screwed in this through hole.Above-mentioned angle square (3) links with the center of circle of graphometer (2), and both are for being rotatably assorted.In addition, be decorated with a circle (8) on the face of graphometer (2), its center is a through hole.

Ruler of the present utility model (1) can be drawn straight line, graphometer (2) can take measurement of an angle and radian, vernier (5) moved around along ruler (1) make required scale on through hole (6) centrally aligned ruler (1) face in the middle of the vernier (5), again tip of a pencil is passed on through hole (6) the contact paper on the vernier (5), screw (7) with ruler (1) one end is the center of circle then, with the known scale of above-mentioned ruler (1) is that radius is drawn circle, and this circle is the circle of required radius.And angle square (3) is owing to can arbitrarily rotate the angle of any known angle of therefore can drawing around the center of circle of graphometer (2).Again that the circle (8) on the graphometer (2) is tangent with the both sides, angle of known angle, the center of circle through hole by circle (8) draws a bit at paper then, the summit at angle is put therewith be linked into straight line again, and this straight line is angular bisector.

Adopt the utility model can draw the angle of straight line, circle, any known angle, and angular bisector, and can take measurement of an angle, radian, so its function is many, and simple in structure, just, cost is low, can lighten the students' load.

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

Fig. 2 is the A-A profile of position shown in Figure 1.

Wherein (9) are for being positioned at the cushion block below ruler (1) one end with graphometer (2) concrete mutually.

Claims

1, a kind of multifunction simple plotter, it is characterized in that, it is ruler (1) by the band scale, the graphometer (2) of band angle index, and angle square (3) is formed, there is the strip slideway (4) that penetrates chi thickness parallel with side at described ruler (1) middle part, have a vernier (5) on the ruler (1), there is a through hole (6) at the middle part that this vernier (5) is aimed at slideway (4), ruler (1) one end also has a through hole, penetrate the rotating screw (7) of an end band point on it, in addition, after ruler (1) one side and graphometer (2) straight flange are located along the same line, make ruler (1) other end and graphometer (2) concrete mutually, the center of circle of described angle square (3) one ends and graphometer (2) links, both are decorated with a circle (8) for being rotatably assorted on graphometer (2) face, the center of circle of this circle (8) is a through hole.

2, multifunction simple plotter according to claim 1 is characterized in that, a cushion block (9) is arranged below the end of described ruler (1) and graphometer (2) concrete mutually.