Ten thousand become drawing trisquare
Technical field
The utility model relates in field of light industry, stationery in cultural goods industry, particularly relates to a kind of ten thousand and becomes drawing trisquares.
Background technology
The curve appearance radian of the various drawing trisquares that current people use is had nothing in common with each other, the trisquare of these different appearance can than drawing a lot of irregular camber line and irregular body.So it obtains the wide model use of numerous large, medium and small student and every profession and trade Cartography designing personnel for a long time.Though they have numerous irregular curve appearance separately, these curves be under hard trisquare is gestured be almost setting curve.Obvious people use existing hardboard trisquare phase to obtain suitable curve need with this trisquare repeatedly have a competition in the drawings, repeatedly continued access camber line could than drawing the curve that will obtain mutually.Though but with this trisquare, camber line is gestured in figure under many circumstances, the camber line obtained cut be a kind of do not reach design radian under helpless selection.
For this reason, designer of the present utility model is because above-mentioned defect, and by concentrating on studies and designing, comprehensive experience and the achievement being engaged in related industry for a long time for many years, research and design goes out a kind of ten thousand and becomes drawing trisquare, to overcome above-mentioned defect.
Utility model content
The purpose of this utility model is to provide a kind of ten thousand to become drawing trisquare, and its structure is simple, easy to operate,
For solving the problem, the utility model discloses a kind of ten thousand and becoming drawing trisquare, comprising the main body of strip, it is characterized in that:
Described main body is made by flexible material, the cross section of described main body is quadrangle, the both ends of the surface of described main body are quadrangle, its periphery is divided into bar shaped face, four, upper and lower, left and right, wherein, relative upper and lower bar shaped face is rectangle, therefore described upper and lower bar shaped face is rectangular surfaces, the relative bar shaped face, left and right of described main body is by wide cone wedge shape thinning gradually, therefore a described left side, bar shaped face are taper surface, described main body is the blade of main body in one end that taper surface is wider, and described main body is the chi tail of main body in one end that taper surface is narrower.
Wherein: the cross section of described main body is rectangle.
Wherein: described main body is provided with horizontal length scale line at the bar of rectangular surfaces or taper surface to edge.
Wherein: described main body adds horizontal length scale line on the edge in a face.
Known by said structure, of the present utility model ten thousand become drawing trisquares arbitrarily can recall the thousand irregular arcs differing from ten thousand changes that differ in size.To obtain a well-content bent arc mutually and only just can become and gesturing in the drawings of anticipating with people in moment as seen.Use it can save some drafting instruments and the calculating of some unnecessary radians, though obviously it is that simple its ten thousand change of soft bar ruler of appearance are all among the reasonable application to soft elasticity trisquare.
Detailed content of the present utility model obtains by explanation described later and institute's accompanying drawing.
Accompanying drawing explanation
Fig. 1 shows the structural representation that of the present utility model ten thousand become drawing trisquare.
Fig. 2 shows the side view before the utility model change.
Fig. 3 shows the top view before the utility model change.
Reference numeral:
1, main body; 2, rectangular surfaces; 3, taper surface; 4, blade; 5, chi tail; 6, graduation mark.
Detailed description of the invention
See Fig. 1 to Fig. 3, show of the present utility model ten thousand and become drawing trisquare.
Described ten thousand change drawing trisquares comprise the main body 1 of strip, described main body 1 is made by having better elastic flexible material, the cross section of described main body 1 is quadrangle, optionally, the cross section of described main body 1 is rectangle, the both ends of the surface of described main body 1 are quadrangle, its periphery is divided into, under, left, right four bar shaped faces, wherein, relative is upper, lower bar shaped face is rectangle, therefore described on, lower bar shaped face is rectangular surfaces 2, the relative bar shaped face, left and right of described main body 1 is by wide cone wedge shape thinning gradually, therefore a described left side, bar shaped face is taper surface 3, described main body 1 is the blade 4 of main body 1 in one end that taper surface 3 is wider, described main body 1 is the chi tail 5 of main body 1 in one end that taper surface 3 is narrower.
Wherein, described main body 1 can be provided with horizontal length scale line 6 at the bar of rectangular surfaces 2 or taper surface 3 to edge, or only on the edge of some, adds horizontal length scale line 6.
Introduce the utility model below and implement ten thousand processes buckled: when drawing conventional curve on drawing, do not need rectangular surfaces 2 or the upper and lower, left and right relation of taper surface 3 on drawing of deliberately pursuing main body 1, only need at the middle part of trisquare arbitrarily a curved radian paintbrush rule on drawing than on trisquare arc facade herein.During as the large and small flexibility of drawn camber line deliberately need be pursued, become drawing trisquares to ten thousand and will implement below that several using method is better: 1.. draw large arc curve: all can recall larger radian with the rectangular surfaces 2 of main body 1 blade 4 one end or taper surface 3 on drawing and compare with paintbrush and rule on drawing on trisquare arc facade herein.2.. draw special little arc curve: need the taper surface 3 of main body 1 as top and bottom, rectangular surfaces 2 as paintbrush ratio cuttings and deliberately can recall very little radian at the narrowest end of chi tail 5 and rule on drawing than on trisquare arc facade herein with paintbrush.Only need bend blade that trisquare is provided with graduation mark 6 one end and to overlap with drawn camber line as drawn length of a curve need be measured and just can read the length of camber line.
Wherein, in another example of the present utility model, the structure of main body 1 also can be shown as: cross section is quadrangle, bar is rectangle to four faces of trend.
As can be seen here, the utility model is that the profile made by the good flexible material of resilience is as a kind of trisquare of chock, its cross section is shown as quadrangle, because the thickness in each portion of the utility model blade is different, so bent body DE is everywhere also different with bullet camber.In use people arbitrarily can recall by its self good rebound performance the thousand irregular arcs differing from ten thousand changes that differ in size.To obtain a well-content bent arc mutually and only just can become and gesturing in the drawings of anticipating with people in moment as seen.Use it can save some drafting instruments and the calculating of some unnecessary radians, though obviously it is that simple its ten thousand change of soft bar ruler of appearance are all among the reasonable application to soft elasticity trisquare.
It is evident that, above description and record be only citing instead of in order to limit disclosure of the present utility model, application or use.Although described in an embodiment and be described in the drawings embodiment, but the utility model do not limit by accompanying drawing example and describe in an embodiment as the optimal mode thought at present to implement the specific examples of instruction of the present utility model, scope of the present utility model will comprise any embodiment of description and the appended claim fallen into above.