CN201124686Y

CN201124686Y - Multipurpose square ruler

Info

Publication number: CN201124686Y
Application number: CNU2007200165781U
Authority: CN
Inventors: 张英智
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-10
Filing date: 2007-12-10
Publication date: 2008-10-01
Anticipated expiration: 2017-12-10

Abstract

The utility model provides a multifunctional square gauge and is characterized in that the gauge comprises a straight ruler and a square perpendicular chute board, wherein the square perpendicular chute board has three layers, the top layer is an upper chute board formed by four isosceles right-angled triangular boards, the intermediate layer is a partition formed by four isosceles right-angled triangular boards and the side length thereof along the sliding chute is 1-5 mm smaller than that of the upper chute board, and the lower layer is a bottom chute board which is a round angle gauge with a central hole. The upper chute board and the partition adhere sequentially to the bottom chute board to form sliding chutes perpendicular to each other. The edge of the straight ruler is provided with a graduation line and a row of through-holes are opened on the top surface of the straight ruler. Two threaded rods pass through the through holes, wherein the lower end of one threaded rod is fixed inside the traverse sliding chute of the square perpendicular chute board and the lower end of the other threaded rod is fixed inside the longitudinal sliding chute of the square perpendicular chute board. The multifunctional square gauge can draw figures with rapidness and accuracy. The multifunctional square gauge can draw ellipses, regular polygons and equation circles and measure length, and is helpful for teachers to complete teaching tasks.

Description

A kind of square ruler of using more

Technical field

The utility model relates to a kind of teaching aid, particularly relates to a kind ofly using square ruler more, belongs to school supply and stationery.

Background technology

At present; people draw the teaching aid of round usefulness usually; function singleness, it is a plurality of to use sometimes a class to use separately, carries inconvenience and easily loses; and it is not very nimble at the blackboard upper drawing circle; particularly also do not have the oval teaching aid of special picture, draw ellipse during drawing and can only draw oval, not only time-consuming but also require great effort with the method for altering course with a concentric circle or the approximate technique of painting; that draws is oval of low quality, is unfavorable for that the teacher makes full use of time in classroom and finishes teaching task quickly and easily.

The utility model content

The purpose of this utility model is to overcome the prior art above shortcomings, by existing picture is justified the improvement of the teaching aid structure of usefulness, provide a kind of novel square rulers of using more, should use square ruler more, not only draw accurately, fast, can also draw ellipse, regular polygon, Equal round, rule is energy length also, helps the teacher and finish teaching task quickly.

The utility model provides thisly uses square ruler more, is characterized in being made of with square vertical chute board ruler, and wherein said square vertical chute board divides three layers: the upper strata is the sliding way plate, is made of four isosceles right-angled triangle plates; The middle level is a dividing plate, also is made of four isosceles right-angled triangle plates, and its limit along slideway is littler 1～5 millimeter than the limit of sliding way plate; Bottom is the slideway base plate, is with the circular protractor of centre bore to constitute by one; Wherein sliding way plate, dividing plate are glued to successively and constitute mutually perpendicular slideway on the slideway base plate, the chi limit of described ruler is provided with graduation mark, the chi face is provided with an exhausting hole, be installed with two screw rods in the through hole, wherein the lower end of a screw rod is fixed in the transverse slipway of square vertical chute board, the lower end of another root screw rod is fixed in the end slipway of square vertical chute board, thereby ruler can be slided in the slideway of square vertical chute board.

Compared with prior art, the beneficial effects of the utility model are: it is accurate, quick not only to draw, and can also draw ellipse, regular polygon, Equal round, and rule is energy length also, helps the teacher and finish teaching task quickly.

Description of drawings

Fig. 1 provides the structural representation of embodiment for the utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the rearview of the square vertical chute board of Fig. 1;

Fig. 4 is the user mode schematic diagram when utilizing the utility model to draw ellipse.

The specific embodiment

As Fig. 1-shown in Figure 4, thisly use square ruler more, constitute with square vertical chute board 2 by ruler 1, three layers of wherein square vertical chute boards 2 minutes: the upper strata is a sliding way plate 2.1, is made of four isosceles right-angled triangle plates; The middle level is a dividing plate 2.2, also is made of four isosceles right-angled triangle plates, and its limit along slideway is littler 1～5 millimeter than the limit of sliding way plate; Bottom is a slideway base plate 2.3, is with the circular protractor 5 of centre bore to constitute by one; Wherein sliding way plate 2.1, dividing plate 2.2 are glued to successively and constitute mutually perpendicular slideway on the slideway base plate 2.3, the chi limit of described ruler 1 is provided with graduation mark, the chi face is provided with an exhausting hole 6, be installed with two bolts 3 in the through hole 6, wherein the lower end of a bolt 3 is fixed in the transverse slipway 7 of square vertical chute board 2, the lower end of another root bolt 3 is fixed in the end slipway 8 of square vertical chute board 2, thereby ruler can be slided in the slideway of square vertical chute board 2.

Draw bowlder, only the lower end with a bolt 3 is fixed in the centre bore of square vertical chute board 2, make it the fixedly center of circle of elder generation, again pencil 4 is inserted in the through hole 6 of rulers 1, rotate ruler 1 and draw circle, clockwise, the inverse time is changeed rotation can, if draw the circle of different sizes, pencil 4 can be inserted in the different through holes 6 of rulers 1,, rotate ruler 1 circles of different sizes that can draw again to adjust scale.

When drawing ellipse, earlier the lower end of two bolts 3 is penetrated in the through hole 6 of ruler 1 setpoint distance (length semiaxis poor), and in the vertical slideway of the square vertical chute board 2 of packing into, pencil 4 is inserted in the through hole 6 of ruler 1, reserve the distance of pencil 4 and two bolts 3, after being the length of length semiaxis, rotating ruler 1 one and enclose the ellipse that promptly drawn.

Claims

1. use square ruler more one kind, it is characterized in that being made of with square vertical chute board ruler, wherein said square vertical chute board divides three layers: the upper strata is the sliding way plate, is made of four isosceles right-angled triangle plates; The middle level is a dividing plate, also is made of four isosceles right-angled triangle plates, and its limit along slideway is littler 1～5 millimeter than the limit of sliding way plate; Bottom is the slideway base plate, is with the circular protractor of centre bore to constitute by one; Wherein sliding way plate, dividing plate are glued to successively and constitute mutually perpendicular slideway on the slideway base plate, the chi limit of described ruler is provided with graduation mark, the chi face is provided with an exhausting hole, be installed with two screw rods in the through hole, wherein the lower end of a screw rod is fixed in the transverse slipway of square vertical chute board, and the lower end of another root screw rod is fixed in the end slipway of square vertical chute board.