CN2366288Y

CN2366288Y - Square for drawing any degree of angles

Info

Publication number: CN2366288Y
Application number: CN 98234607
Authority: CN
Inventors: 王波
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-06
Filing date: 1998-07-06
Publication date: 2000-03-01
Anticipated expiration: 2008-07-06

Abstract

The utility model relates to an arbitrary angle ruler, which is a novel drawing tool. With the arbitrary angle ruler, people can draw different angles, and the troubles that a plurality of previous plotters are required for people to draw an angle with alternate operations are solved. The arbitrary angle ruler is characterized in that a wide ruler and a disk-shaped protractor are hinged together and form a whole body. Since the wide ruler can rotate along the protractor and form an arbitrary angle before and after, the wide ruler can draw an arbitrary angle thereby.

Description

Square for drawing any degree of angles

The utility model relates to a kind of drawing instrument.

People use a pair of set square and protractor usually and draw working, will drawing an angle graphics in study at present.For 30 °, 45 °, 60 °, etc. the drafting at special angle, people utilize set square also comparatively efficient and convenient, but for some non-special angles as: 37 °, 156 ° etc., people can only measure required angle with protractor earlier, with draw two limits at angle, the ruler limit of set square, it is just so not convenient to operate so again.For some careless persons, take good care of two set squares, these three drawing instruments of protractor comparatively bother really, if disappear protractor, some non-special angles that want to draw, real is impossible.

The purpose of this utility model is to provide a kind of monoblock type arbitrarily angled drawing tool, and it can reach and utilize this drawing instrument can draw the purpose of any angle graphics, because it is all-in-one-piece, this drawing instrument is easily taken care of.

The purpose of this utility model is achieved in that Square for drawing any degree of angles is ruler and differences in angle measuring device that is shaped as circle that adopts a broad, locate at the center point the two to be linked up with hinge, make this drawing instrument become as a whole, simultaneously arbitrarily angled in order to draw out, on wide ruler, there is one and retouches directrix, this line parallel is in the ruler limit of wide ruler, and the extended line of this line is by the hinge axle center.Like this when drawing a non-special X angle, as long as earlier with behind the zero degree graduation mark of retouching directrix alignment angles tolerance device on the wide ruler, utilize the draw limit at X angle, the ruler limit of wide ruler again, fixed angle tolerance device makes it motionless on the other hand then, the wide ruler of another hand propelled rotates around jointed shaft, and allow and retouch directrix from the X angle index line of the zero degree graduation mark steering angle tolerance device of differences in angle measuring device on the wide ruler, the directrix of retouching on the wide ruler is overlapped with X angle index line on the differences in angle measuring device, at this moment fix wide ruler again and utilize draw another straight line and last straight line of ruler limit to intersect, then the angle of two straight lines has been exactly non-special X angle that we will draw.This is that rotating the front-back direction angle at wide ruler around jointed shaft is X degree angle because retouch directrix on the width ruler, and the ruler limit of wide ruler is parallel to and retouches directrix, and then the ruler limit of wide ruler also should be X degree angle rotating the front-back direction angle.

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

Fig. 1 is the front view (A-A cutaway view) of the utility model when drawing first limit at X degree angle; Fig. 2 is the vertical view of the utility model when drawing first limit at X degree angle; Fig. 3 is the vertical view of the utility model when drawing second limit at X degree angle.

Describe structure of the present utility model and working condition thereof in detail below in conjunction with Fig. 1, Fig. 2, Fig. 3: the utility model comprises a wide ruler (1); A differences in angle measuring device (2); An attachment pegs (3).

As Fig. 1, there is a recess the right of the wide ruler of the utility model (1) below, and wide ruler (1) is at the last picture of differences in angle measuring device (2), and it is hinged that the two passes through attachment pegs (3).

As Fig. 2, the wide ruler of the utility model (1) is gone up total two up and down of ruler limit, and the two is parallel to each other, except that two ruler limits are printed on the length scale, also be printed on one at the middle right part of wide ruler (1) and retouch the two ruler limits that directrix N-N is parallel to wide ruler (1) more longways, and retouch the hinge axle center that its extended line of directrix N-N is hinged by wide ruler (1) and differences in angle measuring device (2).Differences in angle measuring device (2) has the evenly divided line at degree of picking up angle, 300 land on the circumference of distance hinge axle center certain radius in addition, and graduation mark is radiation shape, and emission center is the hinge axle center of differences in angle measuring device (2).

When drawing non-special any X angle, as Fig. 2, as long as we align the directrix N-N that retouches on the wide ruler (1) earlier with the zero degree graduation mark of differences in angle measuring device (2), press steady wide ruler (1) and differences in angle measuring device (2) with hand, a straight line AB again draws on the ruler limit of wide ruler (1), pin differences in angle measuring device (2) with a hand then, it is maintained static, use the wide ruler of another hand propelled (1) again, it is done around hinge axis clockwise rotates, till retouching directrix N-N and X degree graduation mark on the differences in angle measuring device (2) overlap on the wide ruler (1), as figure (3), at this moment retouch directrix N-N and just turned over X degree angle, because being parallel to, the ruler limit of wide ruler (1) retouches directrix N-N, and the two is all on wide ruler (1), so the ruler limit of at this moment wide ruler (1) has also just turned over the X angle.We can be with the fixing wide ruler (1) of a hand then, and the another hand second straight line CB that draws on the ruler limit of wide ruler (1) comes, and angle A BC is X degree angle like this.

Claims

[1] a kind of Square for drawing any degree of angles is characterized in that having a wide ruler (1) that is used for the picture straight line, with a differences in angle measuring device (2) that is shaped as disk, and wide ruler (1) is hinged by attachment pegs (3) with differences in angle measuring device (2) to be an integral body, and wide ruler (1) and differences in angle measuring device (2) can relatively rotate.
[2] according to the described Square for drawing any degree of angles of claim [1], it is characterized in that having on the wide ruler (1) two ruler limits that are parallel to each other up and down, simultaneously on the middle right position of wide ruler (1), also have one and retouch the two ruler limits that directrix N-N is parallel to wide ruler (1), and retouch the hinge axial line that the extended line of directrix N-N is hinged by wide ruler (1) and differences in angle measuring device (2).
[3] according to claim [1], [2] described Square for drawing any degree of angles, it is characterized in that the geometric center place of the hinged axle center of differences in angle measuring device (2) and wide ruler (1) at differences in angle measuring device (2), and differences in angle measuring device (2) has the evenly divided line at 360 ° of angles on the circumference of distance hinge axle center certain radius, and graduation mark is radiation shape, and emission center is the hinge axle center of differences in angle measuring device (2).