CN2769085Y

CN2769085Y - Four combined into one drawing ruler

Info

Publication number: CN2769085Y
Application number: CN 200420116403
Authority: CN
Inventors: 金璐
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-29
Filing date: 2004-11-29
Publication date: 2006-04-05
Anticipated expiration: 2014-11-29

Abstract

The utility model relates to a drawing tool which can replace a flat ruler, a set square, a protractor and a compass. The surrounding of a transparent oblong plate are marked with scales, and a protractor is arranged in the middle part. A pointer which can rotate is used for indicating metric values, thirty-two small holes with the diameter of 1mm are arranged on the central line of the pointer, and the small holes are matched with a pen point for users to draw an arc and a circle. Above the protractor, the left side and the right side are respectively provided with a proportionally reduced hole in the shape of a set square, and the proportionally reduced set squares are respectively a 30 DEG +60 DEG +90 DEG set square and a 45 DEG +45 DEG +90 DEG set square. A row of small holes are longitudinally arranged near scale lines below the upper edge of the plate, wherein the range interval between hole centers of fifteen holes in the middle is 5mm for users to draw a circle with a bigger radius. Both ends are respectively provided with ten holes with the diameter of 1mm for positioning a center of circle. Eleven holes with familiar graphic symbols are arranged at the bottom of the utility model which uses a tool for replacing various drawing tools, and the utility model has the advantages of simple conformation, low cost and convenient carrying and use for students.

Description

Four unification drawing rulers

Technical field

The utility model is a kind of drawing tools, especially measures angle, length, picture arc, draws circle, draws the multifunction drawing tool of purposes such as angle for students in middle and primary schools, can be used as protractor, set square, ruler and compasses and uses.

Background technology

At present, known students in middle and primary schools' drawing tools mainly contains compositions such as ruler, protractor, 30 °+60 °+90 ° set squares, 45 °+45 °+90 ° set squares, compasses, and kind is more, have the problem that is not easy to carry.

Summary of the invention

The purpose of this utility model provides a kind of four unification drawing rulers, and this four unifications drawing ruler is that the function with ruler, protractor, set square and four kinds of drawing tools commonly used of compasses is combined on the transparent rectangular slab, so that the student carries and uses.

The scheme that its technical problem that solves the utility model adopts is: on a transparent rectangular slab, indicate scale all around, the centre is a protractor, be marked with the scale of positive and negative both direction at the semicircle camber line of protractor, with a rotatable pointer indication metric, this pointer is an axle with the arc core of protractor, pointer is riveted on the arc core of protractor with I-shaped tubular rivet, the end points of pointer points to the scale of protractor, when rotating pointer, the angle on pointer and protractor base will change thereupon, thereby reach the purpose of picture angle, angle measurement.Be uniformly distributed with several apertures on the center line of pointer, this hole cooperates with nib and can be used to the picture arc, draws circle, and the aperture in the middle of the I-shaped tubular rivet is used for locating the arc core and the center of circle.Semicircle white space in the middle of the protractor is a semicircular macropore, so that the aperture that nib passes on the pointer is drawn on operation paper.On the base of protractor, some the lines parallel with the base are arranged, on pointer, some the lines parallel with the pointer sideline are arranged, these lines are used for measuring, using when drawing smaller angle.Above protractor, the hole of a set square shape of dwindling is by a certain percentage each side arranged, be used for replacing 30 °+60 °+90 ° set squares and 45 °+45 °+90 ° set squares commonly used.Near close graduation mark below the top edge of plate body, row's aperture is laterally arranged, this aperture and nib cooperation can be used to the bigger circle of picture radius, arc.The bottom of drawing, the hole that the various common graphical symbols of one row are arranged, comprise equilateral triangle, fan-shaped, parallelogram, rhombus, circle, ellipse, square, rectangle, trapezoidal, pentagon, hexagon, be used for the various graphical symbols commonly used of picture, also can be used for preschool child's formative education.This plate and pointer are all made of transparent materials such as lucite.

The beneficial effects of the utility model are, have replaced multiple drawing tools with a kind of drawing tools, and simple structure, and cost is low, are convenient to the student and carry and use.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is front projection figure of the present utility model, ratio 1: 1.

Fig. 2 is the vertical section structural map of the embodiment of Fig. 1.

Fig. 3 is that another of Fig. 1 is the vertical section structural map of embodiment.

Among Fig. 1,1.30 °+60 °+90 ° triangle plate holes, the 2. semicircle macropore of protractor, 3. I-shaped tubular rivet, 4. pointer, 5. pointer hole, 6. plate body small sircle hole, 7. plate body, 8.45 °+45 °+90 ° triangle plate holes, 9. plate body circular hole small in ends, 10---the hole of 20. various common graphical symbols.

The specific embodiment

Among Fig. 1,1. two tri-angle-holed right-angle sides are parallel with the neighboring board body sideline respectively, wherein right side right-angle side and plate body right hand edge are apart from 10mm, upside right-angle side and plate body top edge are apart from 15mm, the graduation mark of hypotenuse and protractor is adjacent, 2. the semicircle orifice diameter 75mm of protractor, 3. intracardiac footpath, the hole of I-shaped tubular rivet is 1.25mm ± 0.25mm, 4. pointer width 10mm, 5. the pointer hole is on the pointer center line, aperture 1mm, the hole of adjacent holes is in the heart apart from being 1mm, Kong Yukong links to each other, all align with the graduation mark of plate body the right and left in the center of circle of each aperture, have 32 holes, form a slit in the middle of these holes, 6. plate body small sircle hole center line is apart from plate body top edge 9mm, center of circle spacing 5mm, aperture 1.25mm ± 0.25mm, have 15 holes, the center of circle in each hole all with plate body up and down the graduation mark of the integral multiple on both sides 5 align, promptly these 15 holes respectively with the scale 2.5 of plate body top edge, 3,3.5,9.5 graduation mark alignment, 7. plate body is of a size of 12mm * 8.5mm, 8. two tri-angle-holed right-angle sides are parallel with the neighboring board body sideline respectively, wherein left side right-angle side and plate body left hand edge are apart from 10mm, upside right-angle side and plate body top edge are apart from 15mm, the graduation mark of hypotenuse and protractor is adjacent, 9. plate body circular hole small in ends, two ends, the left and right sides respectively have 10, its center line-spacing plate body top edge 9mm, aperture 1mm, in per 10 apertures at two ends, the left and right sides, Kong Yukong links to each other, and align with the graduation mark of last lower limb respectively in the center of circle of each aperture, 10---the hole of 20. various graphical symbols, have 11, be respectively: 10. equilateral triangle hole, 11. scallop hole, 12. parallelogram hole, 13. diamond hole, 14. circular holes, 15. elliptical apertures, 16. square hole, 17. slot, 18. trapezoidal holes, 19. pentagon holes, 20. hexagonal hole, the center line in these holes all point-blank, and apart from the plate body edge 10mm that goes to the bottom, equidistantly arrange at the interval between each figure.

In an embodiment shown in Figure 2, plate body adopts thin material, thickness 1.5mm ± 0.5mm, and thickness is even, and pointer is flattened on the plate body, becomes the pointer of a projection on plate body, and this pointer can rotate at 360 ° of angles.

In another embodiment shown in Figure 3, plate body adopts thicker material, thickness 3mm ± 1mm, and the position that is contacted when pointer rotates is a semicircular groove, pointer falls into groove, and this pointer can be with 180 ° of angles rotations in groove, and the surface maintains an equal level with the plate body surface.

Claims

1. four unify drawing rulers, it is characterized in that, on a transparent rectangular slab, indicate scale all around, the centre is a protractor, be marked with the scale of positive and negative both direction at the semicircle camber line of protractor, with a rotatable pointer indication metric, this pointer is an axle with the arc core of protractor, pointer is riveted on the arc core of protractor with I-shaped tubular rivet, the end points of pointer points to the scale of protractor, on the center line of pointer, be uniformly distributed with several apertures, semicircle white space in the middle of the protractor is a semicircular macropore, on the base of protractor, some the lines parallel with the base are arranged, on pointer, some the lines parallel with the pointer sideline are arranged, above protractor, the hole that a set square shape of dwindling is by a certain percentage each side arranged, two triangles are respectively 30 °+60 °+90 ° triangles and 45 °+45 °+90 ° triangles, near close graduation mark below the top edge of plate, one row's aperture is laterally arranged, the hole in 15 holes is in the heart apart from being 5mm wherein, it is the aperture of 1mm that respectively there are 10 diameters at two ends, in the bottom of drawing ruler, the hole of the various common graphical symbols of a row is arranged, comprise equilateral triangle, fan-shaped, parallelogram, rhombus, circle, oval, square, rectangle, trapezoidal, pentagon, hexagon, plate body and pointer are all made of transparent material.

2. four unification drawing rulers according to claim 1, it is characterized in that: plate body thickness is even, and pointer is flattened on the plate body, becomes the pointer of a projection on plate body, and this pointer can rotate at 360 ° of angles.

3. four unification drawing rulers according to claim 1, it is characterized in that: the position that plate body is contacted when pointer rotates is a semicircular groove, pointer falls into groove, and this pointer can be in groove rotates with 180 ° of angles, table and maintaining an equal level with the plate body surface.