CN203485635U

CN203485635U - Simple angle-drawing ruler

Info

Publication number: CN203485635U
Application number: CN201320440478.7U
Authority: CN
Inventors: 樊星
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-23
Filing date: 2013-07-23
Publication date: 2014-03-19
Anticipated expiration: 2023-07-23

Abstract

The utility model discloses a simple angle-drawing ruler, comprising a main ruler and an auxiliary ruler. One end of the main ruler is provided with a semicircular groove, a diameter side of which is overlapped with one side of the main ruler. Angle scale values are provided on a bottom surface of the semicircular groove, at the inner side of a circular arc side. One end of the auxiliary ruler is provided with a circular arc surface corresponding to the semicircular groove. The circle center of the circular arc surface is overlapped with the circle center of the semicircular groove. An arc slot is provided in the bottom of the semicircular groove, at the inner side of the circular arc. An arc bump in connection with the arc slot is disposed at the inner side of the circular arc surface of the auxiliary ruler. The main and auxiliary rulers are capable of rotating around the circle center of the semicircular groove relative to each other. In this way, the simple angle-drawing ruler has the beneficial effects of helping to draw an angle conveniently and rapidly with high precision.

Description

A kind of Simple drawing angle square

Technical field

The utility model relates to a kind of drawing tools, relates in particular to a kind of Simple drawing angle square.

Background technology

At present, in teaching process, if in the time of need to measuring the angle at an angle, conventionally all need to use protractor, common protractor can be measured the angle value of 0 °-180 ° more accurately, then when drawing, in the time of need to drawing the angle of a special value, conventionally be also to draw with protractor, first draw the straight line at angle, then the central point of protractor is alignd with an end points of straight line, the limit of protractor overlaps with straight line, then at the angle value place of the outside correspondence of the angle scale of protractor, draw a gauge point, finally this gauge point is connected and can completes particular value angle with the end points of straight line.Yet in the final step of this process, when gauge point is connected with the end points of straight line, first protractor is taken off and with ruler, connected afterwards, and now the limit of ruler is difficult to aim at, align with the end points of gauge point, straight line accurately simultaneously, because this is secondary location, be certain to exist deviation, thereby cause the angle that draws with protractor inaccurate, have deviation.

Utility model content

The utility model needs secondary location in order to overcome protractor of the prior art in drawing the process at angle, and the deficiency that makes the angle that draws and actual value have deviation, provides a kind of picture angle quick and easy, and angle is Simple drawing angle square accurately.

To achieve these goals, the utility model adopts following technical scheme:

A kind of Simple drawing angle square, comprise main scale and auxiliary scale, one end of described main scale is provided with semicircle groove, the diameter limit of described semicircle groove and one side of main scale are overlapping, the inner side that is positioned at arc-shaped edges on the bottom surface of semicircle groove is provided with angle index value, one end of described auxiliary scale is provided with and semicircle groove corresponding circle cambered surface, the center of circle of described arc surface and the circle centre position of semicircle groove are overlapping, the inner side that the bottom of described semicircle groove is positioned at circular arc is also provided with arc-shaped slot, the inner side of the arc surface on described auxiliary scale is provided with the arc bump being connected with arc-shaped slot, between described auxiliary scale and main scale, can relatively rotate around the center of circle of semicircle groove.In the time need to drawing the angle of a special value, only need to rotate auxiliary scale, make one side of auxiliary scale aim at the identical angle index value of the angle value with needing picture on main scale, then the one side along ruler, auxiliary scale draws two crossing straight lines, the angle of these two crossing straight lines is the angle of required picture, very convenient while drawing angle.

As preferably, limit corresponding with the diameter limit of semicircle groove on described main scale is provided with ruler scale.Main scale is provided with ruler scale, can be used as ruler and uses.

As preferably, a side of described arc-shaped slot is provided with v-depression, and a side of described arc bump is provided with the V-arrangement limited block corresponding with v-depression.V-arrangement limited block coordinates more stable with V-shaped groove, thereby prevents that auxiliary scale from deviating from when rotating in arc groove.

Therefore, the utlity model has picture angle quick and easy, the accurate beneficial effect of angle.

Accompanying drawing explanation

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

Fig. 2 is the structural representation of main scale in the utility model.

Fig. 3 is that the utility model is used view.

Fig. 4 is the connection diagram of arc groove and arc bump in the utility model.

In figure: main scale 1 auxiliary scale 2 semicircle groove 3 angle index value 4 arc surface 5 arc-shaped slot 6 arc bump 7 v-depression 8 V-arrangement limited blocks 9

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is further described:

As Fig. 1, a kind of Simple drawing angle square shown in Fig. 2 and Fig. 3, comprise main scale 1 and auxiliary scale 2, one end of main scale 1 is provided with semicircle groove 3, the diameter limit of semicircle groove 3 and one side of main scale 1 are overlapping, the inner side that is positioned at arc-shaped edges on the bottom surface of semicircle groove 3 is provided with angle index value 4, one end of auxiliary scale 2 is provided with and semicircle groove corresponding circle cambered surface 5, the circle centre position of the center of circle of arc surface 5 and semicircle groove 3 is overlapping, the inner side that the bottom of semicircle groove 3 is positioned at circular arc is also provided with arc-shaped slot 6, the inner side of the arc surface on auxiliary scale 2 is provided with the arc bump 7 being connected with arc-shaped slot, between auxiliary scale 2 and main scale 1, can relatively rotate around the center of circle of semicircle groove 3, as shown in Figure 4, one side of arc-shaped slot 6 is provided with v-depression 8, one side of arc bump 7 is provided with the V-arrangement limited block 9 corresponding with v-depression 8, arc bump snaps in arc groove and can turn around the center of a circle at arc groove moving, v-depression is in order to prevent that auxiliary scale from deviating from the process of rotating in annular groove, in the present embodiment, limit corresponding with the diameter limit of semicircle groove on main scale 1 is provided with ruler scale, not only can draw circle but also can use as ruler, very easy to use.

By reference to the accompanying drawings, using method of the present utility model is as follows: the angle that for example needs one 110 °, picture, auxiliary scale is rotated to an angle, align in one side that the makes auxiliary scale just graduation mark corresponding with the angle index value of 110 ° on main scale, as shown in Figure 3, then with pen, along the both sides of auxiliary scale, main scale, draw the line segment of two ends connections, the angle between these two line segments is just in time 110 °.The process at whole picture angle is very quick and easy, can draw accurately arbitrarily angled within 0 °-180 °.Therefore, the utlity model has picture angle quick and easy, angle is beneficial effect accurately.

The above embodiment has only expressed the specific embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims

1. a Simple drawing angle square, it is characterized in that, comprise main scale (1) and auxiliary scale (2), one end of described main scale (1) is provided with semicircle groove (3), one side of the diameter limit of described semicircle groove (3) and main scale (1) is overlapping, the inner side that is positioned at arc-shaped edges on the bottom surface of semicircle groove (3) is provided with angle index value (4), one end of described auxiliary scale (2) is provided with and semicircle groove corresponding circle cambered surface (5), the circle centre position of the center of circle of described arc surface (5) and semicircle groove (3) is overlapping, the inner side that the bottom of described semicircle groove (3) is positioned at circular arc is also provided with arc-shaped slot (6), the inner side of the arc surface on described auxiliary scale (2) is provided with the arc bump (7) being connected with arc-shaped slot, between described auxiliary scale (2) and main scale (1), can relatively rotate around the center of circle of semicircle groove (3).

2. a kind of Simple drawing angle square according to claim 1, is characterized in that, the upper limit corresponding with the diameter limit of semicircle groove of described main scale (1) is provided with ruler scale.

3. a kind of Simple drawing angle square according to claim 1, is characterized in that, a side of described arc-shaped slot (6) is provided with v-depression (8), and a side of described arc bump (7) is provided with the V-arrangement limited block (9) corresponding with v-depression (8).