CN2113896U

CN2113896U - Multi-function ruler

Info

Publication number: CN2113896U
Application number: CN 91231200
Authority: CN
Inventors: 林光清
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-12-25
Filing date: 1991-12-25
Publication date: 1992-08-26

Abstract

The utility model relates to a multi-function rule for plotting geometric figures; one rule is provided with various functions of a straightedge, drawing compasses, a protractor, etc. The multi-function rule is characterized in that an outer ring is connected to the straightedge, and a circular disc is arranged in the circular groove of the outer ring; the edges of the circular disc and the outer ring are respectively provided with graduation, wherein, one kind of graduation is the equally divided circumferential graduation in 360 DEG, and the other is the circle vernier graduation; the two are matched mutually, and a movable radius auxiliary rule is arranged in the straightedge. With easy carrying and use, and complete function, the multi-function rule has multiple use, and is especially suitable for use as the plotting stationery for middle and primary school students.

Description

Multi-function ruler

The utility model is a kind of multifunctional ruler, relates to primary and secondary students and is used for the stationery of drawing geometric figures.

The stationery of existing primary and secondary students drawing geometric figures commonly used has: pen, compasses, chi, protractor etc., though these stationeries differ from one another, great majority are a thing one function, therefore, when drawing, primary and secondary students must possess above-mentioned outfit, so not only various in style, carry inconvenience, omit easily and leave behind, and less because of desk when using, place multiple stationery, also turn round and look at this easily and lose that, make the extremely busy unrest of student, even influence study.

The purpose of this utility model is to design a kind of multifunctional ruler, and it both can make general ruler and accurate protractor usefulness, also can draw circle, circular arc and the arc angle of various different sizes.

The purpose of this utility model is to realize like this, it is with on the strip, following both sides have the ruler 40 of scale, the edge that it is characterized in that ruler 40 is provided with a cambered outwards semicircle hollow outer shroud 20, on the ruler 40 therewith outer shroud 20 corresponding positions be provided with a semicircle that concaves, and it and outer shroud 20 are formed an outer shroud circular groove 21, the central point of this outer shroud circular groove 21 is positioned on the edge line of ruler 40, the periphery of the indent semicircle of ruler is provided with the scale 13 that makes zero, the ruler face is provided with a hole of suitable distance more than two, the disk 30 of one transparent material is inserted in the outer shroud circular groove 21, free to rotate, and buckle 22 and fasten by being located at the be harmonious dish at place of outer shroud circular groove on the ruler 21 and disk 30, its central point is established a circle center hole 31, cross this central point and establish the center directrix of mutual square crossing, disc face is provided with a hole 50 of suitable distance more than two, and the disk outer rim is provided with 0～360 ° circumference scale.

The multifunctional ruler of above-mentioned this structure, it can be the center with the card centre bore, with the hole on the disk, on the ruler to centre bore distance is radius, and circle, the circular arcs of the different sizes of drafting, play compasses and draw the effect of circle, it can rotate to draw around centre bore again and different decide the angle oblique line and the usefulness that takes measurement of an angle with ruler, plays the effect of ruler and protractor.

The advantage of this multifunctional ruler is the many usefulness of a chi, makes primary and secondary students carry, use greatly convenient, can improve interest and learning efficiency that the student draws.

Further specify below by embodiment and accompanying drawing structure and purposes multifunctional ruler.

Fig. 1 is the stereogram of the utility model embodiment.

Fig. 2 is the plane of the utility model embodiment.

Fig. 3 is the cutaway view of the secondary chi part in the present embodiment.

Fig. 4 is the cutaway view of the integrated disc portions in the present embodiment.

Fig. 5 is for the present embodiment drawing beeline and decide angle lapping oblique line example.

Fig. 6 draws larger-diameter circle, circular arc example for present embodiment.

Fig. 7 is circle, the circular arc example of present embodiment drafting than minor diameter.

The example of Fig. 8 for taking measurement of an angle with present embodiment.

Fig. 9 is the example of the disk draw circles of present embodiment.

Mark among the figure: 11 circumference scales, 12 circle vernier graduations, 13 scales that make zero, 20 outer shrouds, 21 outer shroud circular grooves, 22 dish buttons, 30 disks, 31 circle center holes, 32 center directrixes, 40 rulers, 41 slide-rule dials, 42 antiseepage limits, 43 salient points, 44 secondary chi grooves, 45 secondary chis, 50 holes, 51 holes import taper hole, 60 drawing pens, 70 positioners, 71 rotation positioning screw caps, 72 rotation bolts, 80 straight vernier graduations, 90 radius scales.

By the multifunctional ruler of the visible present embodiment in Fig. 1～4 by a strip, the both sides ruler 40 that has a scale is main body up and down, it is characterized in that being provided with an evagination semicircle hollow outer shroud 20 at ruler 40 long edges, on ruler, inwardly be provided with a recessed semicircle it and outer shroud 20 and form an outer shroud circular groove 21 with outer shroud 20 corresponding positions, and the central point of this circular groove is positioned on the edge line of ruler 40, disk 30 by transparent material is inserted in outer shroud circular groove 21, and buckle 22 with the dish at outer shroud 20 places of engaging and fasten by being located at disk 30, when being rotated in circular groove, disk can not drop out, on the card of disk 30, be provided with two by orthogonal center, card center directrix 32, the circle center hole 31 that coincides with the center, more than two apart from a hole 50 and the circumference scale 11 of the suitable distance of circle center hole, be provided with round vernier graduation 12 at disk 30 and outer shroud circular groove 21 places of being involutory, on the periphery of the indent semicircle of ruler 40, be provided with the scale 13 that makes zero, and on ruler 40, be provided with the secondary chi groove 44 of a strip, with can in groove 44, be free to slide, the secondary chi 45 of slide block shape, and make the fixedly positioner 70 of usefulness of secondary chi 45, the rotation bolt 72 that this positioner can upwards be run through by secondary chi bottom surface and formed with the rotation positioning screw cap of being located at above the secondary chi 71 that bolt matches, when in use secondary chi 45 slides along groove 44, only need nut is unclamped, when waiting to move on to desired location, nut is tightened, and secondary chi just is fixed.

The multifunctional ruler of the foregoing description, with centre bore (circle center hole) 31 is the center, with on the disk or ruler on hole 50 to the distance of centre bore is circle, the circular arc that radius just can be drawn all size, encloses centre bore with ruler and rotates and can draw the different oblique lines of decide angle and take measurement of an angle.Because be provided with straight vernier graduation 80 and circle vernier graduation 12 in the present embodiment on ruler, therefore, the big I of circular diameter realizes the effect of the stepless increase and decrease the same with compasses, the survey of arc angle, painting then can be more accurate.

Present embodiment is not made dirty for the figure that makes drafting, takes following measures especially:

1) on the bottom surface of disk 30 and ruler 40, be provided with salient point 43 more than two, and its arbitrary salient point all is not equal to the distance (referring to Fig. 4) of arbitrary hole 50 to centre bore 31 to the distance of centre bore 31;

2) at ruler 40 edges and the bottom side at outer shroud circular groove 21 edges be provided with the antiseepage limit 42(at the oblique angle that slopes inwardly referring to Fig. 3).

In addition, can be upper and lower easily in a hole 50 in order to make drawing pen, a hole 50 is made as one has the reverse taper shape hole 51 that imports tapering.

Fig. 5～9 are the multi-functional application example of present embodiment.

As seen from Figure 5, when drawing straight line, directly draw, and when drawing the oblique line at certain inclination angle, then earlier the circle center hole 31 of disk 30 is aimed at the intersection point of horizontal lines and parallax with ruler 40 edges, and the scale 13 that will make zero is aimed at 0 degree place of circumference scale 11, make ruler 40 edges aim at horizontal line, press...with one's finger then and press disk 30, another hand rotates ruler 40, by circumference scale 11 and make zero scale 13 and the relation of circle between the vernier graduation 12, can try to achieve accurate oblique angle.

As seen from Figure 6, when drawing great circle, press...with one's finger and press disk 30, drawing pen 60 is inserted in 45 holes 50 of secondary chi, utilize drawing pen 60 drive rulers 40 to revolve to turn around and can draw great circle, the big I of radius of a circle utilizes moving of secondary chi 45 to realize; When need are drawn accurate orthodrome, then earlier the circle center hole 31 of disk 30 is aimed at arc core, and scale made zero (the parallax step is identical with painting), draw arc by the method for above-mentioned picture circle then, this moment visual circular degree 11 with the relation of make zero

scale

13 and 12 of vernier graduations of circle, get final product accurate circular arc.

Figure 7 shows that the example of drawing roundlet and accurate little circular arc, it and the difference of Fig. 6, finger presses is not disk 30 but ruler 40 when just drawing, and drawing pen 60 inserts a hole 50 interior the getting final product of disks.

Figure 8 shows that the example that takes measurement of an angle, this moment the circle center hole 31 of disk 30 is aimed at two straight-line intersections of measured angle, and make wherein line of ruler 40 top edges alignment, press...with one's finger then and push down disk 30 and rotation ruler 40, top edge is aimed at its another line, this moment visual circumference scale 11 with the relation that makes zero scale 13 and justify 12 of vernier graduations, just can accurately read its angle number.

Fig. 9 is the example that utilizes disk 30 draw circles, take out disk 30 this moment, with between the hole 50 in the disk apart from or the distance of 31 of a hole 50 and circle center holes be radius, and be the center of circle with a hole wherein, be inserted as with drawing pen 60 in the hole of radius and rotate a circle, can obtain less circle.

By top these examples as seen, the utlity model has the function of multiple stationeries such as compasses, ruler, protractor, and be provided with structures such as straight vernier graduation, circle vernier graduation, antiseepage limit, salient point because of it, the geometric figure that this chi is drawn is more accurate, clean and tidy, and is more convenient during use.

Claims

1, a kind of multifunctional ruler, it comprises on the strip, following both sides have the ruler 40 of scale, the edge that it is characterized in that ruler 40 is provided with a cambered outwards semicircle hollow outer shroud 20, on the ruler 40 therewith outer shroud 20 corresponding positions be provided with a semicircle that concaves, and it and outer shroud 20 are formed an outer shroud circular groove 21, and the central point of this outer shroud circular groove 21 is positioned on the edge line of ruler 40, the periphery of the indent semicircle of ruler is provided with the scale 13 that makes zero, the ruler face is provided with a hole of suitable distance more than two, the disk 30 of one transparent material is inserted in the outer shroud circular groove 21, free to rotate, and buckle 22 and fasten by being located at the be harmonious dish at place of outer shroud circular groove on the ruler 21 and disk 30, its central point is established a circle center hole 31, cross this central point and establish the center directrix of mutual square crossing, disc face is provided with a hole 50 of suitable distance more than two, and the disk outer rim is provided with 0～360 ° circumference scale.

2, by the described multifunctional ruler of claim 1, it is characterized in that described ruler face is provided with more than two suitably a hole of distance be to be provided with the secondary chi groove 44 of radius scale 90 and can to have more than two suitably the secondary chi 45 in a distance hole 50 on slide block shape, its face and the fixture 70 of secondary chi location is formed being free to slide on the secondary chi groove 44 to be by a strip, the trough rim offered on 40 on the ruler.

3, by the described multifunctional ruler of claim 2, it is characterized in that described secondary chi 45 is the secondary chi that an edge is provided with straight vernier graduation 80.

4, by the described multifunctional ruler of claim 2, the rotation bolt 72 that the fixture 70 that it is characterized in that described secondary chi 45 location usefulness is upwards run through by secondary chi bottom surface and formed with the rotation positioning screw cap of being located at above the secondary chi 71 that bolt matches.

5, by the described multifunctional ruler of claim 1, it is characterized in that being provided with round vernier graduation 12 at disk 30 and outer shroud circular groove 21 places of being involutory.

6, by the described multifunctional ruler of claim 1, it is characterized in that the bottom side at ruler 40 edges and outer shroud circular groove 21 edges is provided with the antiseepage limit 42 at intilted oblique angle.

7, by the described multifunctional ruler of claim 1, it is characterized in that being provided with the salient point 43 more than two in ruler 40 and disk 30 bottom surfaces.

8, by the described multifunctional ruler of claim 7, it is characterized in that described salient point 43, its arbitrary salient point all is not equal to the distance of arbitrary hole 50 to centre bore 31 to the distance of centre bore 31.

9,, it is characterized in that a hole 50 on ruler face, the disc face is one to have a hole in reverse taper shape hole 51 by the described multifunctional ruler of claim 1.