CN201161509Y

CN201161509Y - Drawing tool for pupil

Info

Publication number: CN201161509Y
Application number: CNU2008200081460U
Authority: CN
Inventors: 刘国庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-04
Filing date: 2008-03-04
Publication date: 2008-12-10
Anticipated expiration: 2018-03-04

Abstract

Disclosed is a drawing tool for students, which is simple and convenient in operation and easy in mastering. The drawing tool can enable the students to draw perpendicular lines, parallel lines, rectangles, squares and the like fast, measures the length of line segments and the size of angles, can fast measures the diameter of circles, and overcomes errors which is easy to be made when drawing the perpendicular lines and the parallel lines. The drawing tool is composed of a main frame, a movable lower convex ruler, a triangle portion and a semi-circle portion, the triangle portion and the semi-circle portion are placed at two ends of the main frame, slits which are mutually perpendicular are arranged above the triangle portion, the perpendicular line can be quickly drawn in the mutually perpendicular slits, scales for measuring the degree of angles are arranged on the semi-circle portion, a lower convex portion of the movable lower convex ruler placed in a rectangular hollow inner frame of the main frame can parallel move under the external force, the back of the main frame has an indent portion, and a rectangle fixing portion is adhered with the lower convex portion of the movable lower convex ruler, thereby avoiding the movable lower convex ruler separating from the main frame.

Description

A kind of student's drawing instrument

Affiliated technical field

The utility model relates to a kind of student's drawing instrument.

Background technology

At present, known student's drawing instrument mainly contains ruler, set square, graphometer etc., and the pupil begins to learn when drawing parallel lines with vertical line, is difficult to grasp the picture main points, occurs various mistakes easily, brings very big inconvenience to teachers ' teaching, becomes a teaching difficulty.Simultaneously, the instrument that lacks a kind of maneuverable measurement diameter of a circle.

Summary of the invention

Begin to learn and draw parallel lines and during vertical line in order to overcome the pupil, be difficult to grasp the picture main points, the problem of various mistakes occur easily, provide convenience to teachers ' teaching, simultaneously, in order to design a kind of instrument of maneuverable measurement diameter of a circle, a kind of student's drawing instrument now is provided, this drawing instrument, easy grasp easy and simple to handle, can make the student draw vertical line, parallel lines, rectangle, square etc. fast, and can the slotted line segment length and the size at angle, can measure diameter of a circle fast, overcome the mistake that has been prone to when drawing vertical line, parallel lines.

The technical scheme in the invention for solving the technical problem is: design a kind of comprehensive drawing instrument of being made up of main frame, move about following convex chi, gable and semi-circular portions, gable and semi-circular portions are at the two ends of main frame, triangular portion is divided into isosceles triangle, drift angle is rectangular, mutually perpendicular finedraw is arranged on the gable, the finedraw marginal portion of mutually perpendicular finedraw both sides is by thick to thin shape, and the bottom surface of finedraw edge bottom is the plane.Like this, student's mutually perpendicular line that can in mutually perpendicular finedraw, draw fast, and whether two lines that can enough mutually perpendicular finedraw checks intersect are vertical.The scale that the measured angular number of degrees are arranged on the semi-circular portions, the student can be with the size of its measured angular.Move about after down the lower convexity of convex chi is partly put into the empty inside casing of rectangle of main frame, try hard to recommend down movingly outside, the convex chi that moves about down can be done parallel moving, and the exposed parts of convex chi drew parallel lines under the student can utilize the wide of the empty inside casing of rectangle and move about like this.The outer edge of main frame partly has the scale of measuring length, and the inside edge part of main frame has the scale of measuring length, and the inside edge part of main frame has the scale of measuring length, and moving about has the scale of measuring length on the convex chi down.The student can utilize these scales of measuring length to draw square and rectangle, and the length of measuring various line segments.Simultaneously, the student can utilize the wide of the empty inside casing of rectangle and the convex chi measurement diameter of a circle down that moves about.There is a recessed portion at the back side of main frame, the rectangle standing part partly is bonded together with the lower convexity of the following convex chi that moves about, and avoids moving about separating of convex chi and main frame, simultaneously, the thickness of rectangle standing part equates with the height of side, and the following convex chi that moves about can be slided smoothly.

The beneficial effects of the utility model are, have overcome the pupil and have begun to learn and draw parallel lines and during vertical line, are difficult to grasp the picture main points, the problem of various mistakes occur easily, have given teachers ' teaching and have provided convenience, and simultaneously, provide a kind of drawing instrument for measuring diameter of a circle.This drawing instrument, easy grasp easy and simple to handle can make the student draw vertical line, parallel lines, rectangle, square etc. fast, and can the slotted line segment length and the size at angle, can measure diameter of a circle fast, overcome the mistake that is prone to when drawing vertical line, parallel lines.

Description of drawings

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

Fig. 1 is a front of the present utility model oblique view

Fig. 2 is a back side of the present utility model oblique view

Fig. 3 is a profile of the present utility model

1. main frames among the figure, 2. gable, 3. semi-circular portions, 4. convex chi under moving about, 5. mutually perpendicular finedraw, the 6. empty inside casing of rectangle, 7. drift angle, 8. finedraw marginal portion, 9. lower convexity part, 10. rectangle standing part, the inside edge of 11. main frames, the inside edge of 12. main frames, 13. recessed portion, 14. finedraw edge bottom, 15. exposed parts, 16. the outer edge of main frame, the medial surface of 17. main frames, 18. sides.

The specific embodiment

In Fig. 1, design a kind of comprehensive drawing instrument of forming by main frame [1], move about following convex chi [4], gable [2] and semi-circular portions [3], gable [2] and semi-circular portions [3] are at the two ends of main frame [1], gable [2] is an isosceles triangle, drift angle [7] is rectangular, mutually perpendicular finedraw [5] is arranged on the gable [2], and the finedraw marginal portion [8] of mutually perpendicular finedraw [5] both sides is by thick to thin shape, and the bottom surface of finedraw edge bottom [14] is the plane.Like this, student's mutually perpendicular line that can in mutually perpendicular finedraw [5], draw fast, and whether two lines that can enough mutually perpendicular finedraws [5] check intersect are vertical.The scale that the measured angular number of degrees are arranged on the semi-circular portions [3], the student can be with the size of its measured angular.After the lower convexity of convex chi [4] part [9] is put into the empty inside casing of rectangle [6] of main frame [1] under moving about, try hard to recommend down moving outside, convex chi [4] can be done parallel moving under moving about, and the exposed parts [15] of convex chi [4] drew parallel lines under the student can utilize the wide of the empty inside casing of rectangle [6] and move about like this.The outer edge of main frame [16] part has the scale of measuring length, and the inside edge of main frame [12] part has the scale of measuring length, and the inside edge of main frame [11] part has the scale of measuring length, and moving about has the scale of measuring length on the convex chi [4] down.The student can utilize these scales of measuring length to draw square and rectangle, and the length of measuring various line segments.Simultaneously, the student can utilize the wide of the empty inside casing of rectangle [6] and convex chi [4] the measurement diameter of a circle down that moves about.

In the embodiment of Fig. 2, there is a recessed portion [13] at the back side of main frame [1], the lower convexity part [9] of convex chi [4] is bonded together rectangle standing part [10] with moving about down, convex chi [4] and main frame [1] separates under avoiding moving about, simultaneously, the thickness of rectangle standing part [10] equates with the height of side [18], and the following convex chi [4] that moves about can be slided smoothly.

In the embodiments of figure 3, the finedraw marginal portion [8] of mutually perpendicular finedraw [5] both sides is by thick to thin shape, and finedraw edge bottom [14] is the plane.Like this, just more convenient with the stroke vertical line.

Claims

1, a kind of student's drawing instrument, it is made up of main frame, move about following convex chi, gable and semi-circular portions, it is characterized in that gable and semi-circular portions two ends at main frame, triangular portion is divided into isosceles triangle, and drift angle is rectangular, and gable has mutually perpendicular finedraw, semi-circular portions has the scale of the measured angular number of degrees, after the lower convexity of convex chi is partly put into the empty inside casing of rectangle of main frame under moving about, try hard to recommend outside and move down, the convex chi can be done parallel mobile under moving about.

2, a kind of student's drawing instrument according to claim 1, the lower convexity of convex chi partly is a cuboid under it is characterized in that moving about, the length of this cuboid equates that with empty the wide of inside casing of rectangle the height of this cuboid equates with the thickness of the medial surface of main frame.

3, a kind of student's drawing instrument according to claim 1 is characterized in that moving about down that the shape of the exposed parts of convex chi is a cuboid, the growing up in the wide of the empty inside casing of rectangle and be less than or equal to the wide of main frame of this cuboid.

4, a kind of student's drawing instrument according to claim 1, there is a recessed portion at the back side that it is characterized in that main frame, the rectangle standing part partly is bonded together with the lower convexity of the following convex chi that moves about, avoided moving about separating of convex chi and main frame, the thickness of rectangle standing part equates with the height of side.

5, a kind of student's drawing instrument according to claim 1, the finedraw marginal portion that it is characterized in that mutually perpendicular finedraw both sides are by thick to thin shape, and the finedraw edge bottom is the plane.

6, a kind of student's drawing instrument according to claim 1, the outer edge that it is characterized in that main frame partly has the scale of measuring length, the inside edge part of main frame has the scale of measuring length, the inside edge part of main frame has the scale of measuring length, and moving about has the scale of measuring length on the convex chi down.