CN2143560Y

CN2143560Y - Multifunction drawing instrument

Info

Publication number: CN2143560Y
Application number: CN 92226319
Authority: CN
Inventors: 徐昌烈
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-27
Filing date: 1992-06-27
Publication date: 1993-10-13
Anticipated expiration: 2002-06-27

Abstract

The utility model relates to multifunctional drawing stationery, which provides a parallel-rolling tool, the whole ruler of which passes through a shaft. The utility model is provided with an electronic display for displaying moving distance of parallel lines. A ruler body replaces two compasses. The ruler body is provided with a pencil sharper, a small knife and an angulometer. The utility model can exactly draw straight lines, parallel lines with a certain distance, vertical lines, rectangles, triangles, large-arc lines, small-arc lines, and oblique lines with any angle. In addition, a novel ruler with proportional scales is provided. The utility model can be used for drawing electronic circuit diagrams and various drawings, has high drawing precision and saves time. Particularly, the utility model is an ideal tool for all students. The utility model has advantages of simple structure, complete functions and convenient use.

Description

Multifunction drawing instrument

The utility model belongs to drawing instrument.

During general the drawing, the drawing instrument that people use always, by T-square, the set square graphometer, compasses and engineer's scale also are with pencil volume cutter, the especially student of middle and primary schools' science and engineering college, are with multiple instrument very inconvenient.

The purpose of this utility model provides a kind of multifunctional drawing tool of combination, its can draw soon straight line, set a distance parallel lines, right angle quadrangle, triangle, vertical line, same distance vertical line, oblique line and circular arc line at any angle, especially be fit to the drafting of various electronic-circuit diagrams, the drafting of the drawings such as geometric graph of student study, save time, draw accurately.

The utility model is by the short compasses frame of blade, chi axle,, two center of circle pilot pins, and electronic digital displayer, pencil, volume cutter, pocket knife and the higher millimeter of precision constitute apart from pilot pin.This device primary structure: center of circle pilot pin is fixed on an end of chi; Pocket knife is positioned at the groove of chi, has several and the corresponding great circle of length scale to move the some hole on blade; The place is provided with tooth 29 on chi upper front end inclined-plane; The scale of 10 millimeters scales and 8 millimeters scales is set on blade, and their ratio is respectively 1:500,1:1000 and 1:1250,1:2500; Angulometer is arranged on blade, two triangles are arranged in the angulometer, one of them is a hollow.

Below in conjunction with description of drawings the utility model most preferred embodiment.

Fig. 1 is the utility model vertical view.

Fig. 2 is the chi axle schematic diagram in the utility model.

Fig. 3 is the utility model side view.

Fig. 4 is the pilot pin enlarged drawing in the utility model.

In Fig. 1-4,1 blade, 2 pocket knives, 3 pencils volume cutter, 4 screws, 5 scribe marks, 6 blades move scale, 7 ratios move scale, 8 electronic digital displayer, 9 chi axles, 10 compasses framves, 11 center of circle pilot pins, 12 compasses frame fixed screws, 13 is 5 millimeters parallel mobile set a distance pins, 14 protractors, 15 right angled triangles, 16 hollow right angled triangles, 17 blade scales, 18 chi axle sleeves, 19 axle head covers, 20 axial plane teeth, 21 axial plane slide-rule dials, 22 axial plane helical scales, the oblique tooth of 23 chi face limit ends, 24 springs, 25 needle guards, 26 pin center nails, 27 finger compressing tablets, the moving point of 28 great circles hole, 29 teeth, 30 pilot pins.In this embodiment, there are six slide-rule dials 21 and a helical scale 22 in chi axle 9 surfaces.

Below in conjunction with accompanying drawing in detail its use is described in detail:

1, draws roundlet.At first compasses frame 10 is pulled out, as shown in the figure.Secondly be that justify in the center of circle with pilot pin 30.

2, draw great circle.At first with the pilot pin 30 vertical and blade of needle point of position Rotate 180 ° and pilot pin 30 as shown in FIG., secondly, according to drawn radius of a circle value, the moving point of the selected great circle position of hole 28 on blade, at last nib being inserted in the moving point of the great circle hole 28, is that justify in the center of circle with pilot pin 30.

3, draw angle: with penholder go into hollow triangle 16 right angle electrical, determine angle after, blade promotes forward.

4, other main usage: the displacement that 0～6cm scale of blade and helix are determined parallel lines; 0～10 the oblique line scale on blade top is a parallel lines displacement of determining engineer's scale.

Claims

1, a kind of multifunctional drawing stationery that comprises chi axle, a volume cutter is characterized in that:

A, center of circle pilot pin 11 are fixed on an end of chi;

B, pocket knife 2 are positioned at the groove of chi;

C, the moving point of several and the corresponding great circle of a length scale hole 28 is arranged on blade; The place is provided with tooth 29 on chi upper front end inclined-plane; The scale of 10 millimeters scales and 8 millimeters scales is set on blade, and their ratio is respectively: 1: 500,1: 1000 and 1: 1250,1: 2500; Angulometer is arranged on blade, two triangles 15,16 are arranged in the angulometer, wherein triangle 16 is a hollow.

2, multifunctional drawing stationery according to claim 1, its feature: there are six slide-rule dials 21 and a helical scale 22 in chi axle 9 surfaces.