CN2089879U - Multifunction four-angle board - Google Patents

Abstract

The utility model discloses an improved multi-functional drawing tool capable of replacing a set of general triangle board, which is characterized in that the tool is a piece of four-angle board with the four angles of 90, 45, 165 and 60 DEG respectively, wherein, the two short edges of the four-angle board have similar (containing equal) length. Owing to that each of the four edges has equivalent length, when the four edges are respectively positioned against a T-square to move or serve as a position face, the board is comparatively stable; at this time, straight lines 60, 45, 30 and 15 DEG off the vertical line can be drawn out along the rest three edges very conveniently. More than two opportunities and drawing methods can occur in each of the lines in the condition of non board turning. The tool can be provided with more functions by making a protractor and a curve in the quadrangle.

Description

Multifunction four-angle board

The utility model relates to a kind of improved drawing instrument.

The set square of one secondary conventional drawing usefulness is made up of 45 ° and two set squares in 30 ° of (60 °) angles.No. 4821424 patents of the U.S. can draw with the evolution of a set square similar 30 °, 45 ° and 60 ° of lines to the angle steel section configuration, but the locating surface that this set square contacts with T-square during owing to these three kinds of angles of picture is too short, move and poor stability during the location, it is not too convenient to use.

The purpose of this utility model is to provide a kind of multi-functional drawing instrument with as far as possible little cost, and it can replace a secondary conventional set square effectively, and easy to use.

The purpose of this utility model is achieved in that an acute angle with the set square of a 45 cuts away, the angle that makes section and set square one right-angle side is 60 ° (then being 30 ° with the angle of another right-angle side), be Square consisting of two isosceles right-angled triangles so set square originally becomes, four angles of Square consisting of two isosceles right-angled triangles are respectively 90 °, 45 °, 165 ° and 60 °.Make the length of two minor faces of Square consisting of two isosceles right-angled triangles close (containing equal).Because all there is suitable length on four limits of Square consisting of two isosceles right-angled triangles, four limits are leaned against respectively on the T-square move or all very stable when making locating surface, the straight line at vertical line, 60 °, 45 °, 30 ° and 15 ° angles easily can draw along its excess-three limit this moment, in quadrangle, make protractor and curve ruler again, can make this instrument have more function.

The utility model need be that next 45 is cut in 60 ° section with an angle with an one right-angle side with the set square of a 45 only, make it become Square consisting of two isosceles right-angled triangles, in Square consisting of two isosceles right-angled triangles, make protractor and curve ruler again, it just can replace secondary conventional drawing instruments such as set square, protractor and curve ruler, all provide the more chance and the technique of painting to drawing vertical line, 60 °, 45 °, 30 ° and 15 ° of angles, it is simple in structure, and is easy to use, multi-functional utensil, high efficiency.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Accompanying drawing 1 is the plane of the multi-functional Square consisting of two isosceles right-angled triangles that provides according to the utility model.

The specific structural details and the operating position that the utility model proposes below in conjunction with description of drawings.

As shown in Figure 1: Square consisting of two isosceles right-angled triangles is by (1) .(2) .(3) .(4) four limits surround.(1)--angle between (2) limit is 90 °, (2)--and the angle between (3) limit is 45 °, (3)--and the angle between (4) limit is 165 °, (4)--and the angle between (1) limit is 60 °.In the position shown in the figure 1, (1) limit leans against on the T-square, can draw vertical line along (2) limit, draws 45 ° of lines along (3) limit, draws 60 ° of lines along (4) limit.

In accompanying drawing 2, (2) limit is leaned against on the T-square, can draw vertical line along (1) limit, draw 45 ° of lines along (3) limit, draw 30 ° of lines along (4) limit.In accompanying drawing 3, (3) limit is leaned against on the T-square, 45 ° of lines of the both direction that can draw along (1) limit and (2) limit can be drawn 15 ° of lines along (4) limit.In accompanying drawing 4, (4) limit is leaned against on the T-square, the 60 ° of lines that can draw along (1) limit, the 30 ° of lines that draw along (2) limit, 15 ° of lines draw along (3) limit.

Linear standards is all made on four limits of Square consisting of two isosceles right-angled triangles, can be measured the picture combination during drawing, increase work efficiency.In quadrangle, make semicircle hole, along the outer rim in hole 0--180 ° the radially scale that draws, per 10 ° engrave the scale numeral, center in half garden carves center line, any angle can be measured or draw to the protractor of purchasing thus (5) easily, make the hollow curve ruler (6) that curvature does not wait in tetragonal other vacant place, for the usefulness of drawing arbitrary curve.

Lucite or plastics that the most handy transparency of the utility model is good are made.

Claims (5)

1, a kind of drawing instrument that is made of a plate is characterized in that this instrument is the Square consisting of two isosceles right-angled triangles that four angles are respectively 90 °, 45 °, 165 ° and 60 °, and the length of two minor faces of Square consisting of two isosceles right-angled triangles is close, makes protractor and curve ruler in quadrangle.

2, Square consisting of two isosceles right-angled triangles according to claim 1 is characterized in that linear standards is all made on four limits of Square consisting of two isosceles right-angled triangles.

3, Square consisting of two isosceles right-angled triangles according to claim 1 is characterized in that the protractor of making in the quadrangle (6) is radially to make 0-180 ° scale in the outer rim of semicircle hole, and per 10 ° indicate the scale numeral, and center line is carved with in half garden.

4, Square consisting of two isosceles right-angled triangles according to claim 1 is characterized in that the curve ruler (6) that the vacant place in the quadrangle is made is the curved surface of the different curvature of hollow.

5, Square consisting of two isosceles right-angled triangles according to claim 1, good lucite or plastics are made to it is characterized in that the most handy transparency of Square consisting of two isosceles right-angled triangles.

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