CN2878085Y

CN2878085Y - Multi-function straightedge

Info

Publication number: CN2878085Y
Application number: CN 200620101985
Authority: CN
Inventors: 黄小平
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-22
Filing date: 2006-03-22
Publication date: 2007-03-14
Anticipated expiration: 2016-03-22

Abstract

The utility model relates to a multifunctional ruler, which comprises a ruler made of firm material, a circle center column and a drawing pencil, wherein the ruler is arranged with a protractor on one end and two small transparent circular hole are processed with the spacing of 3 milometer from the centre of the protractor to the other end, further a series of small transparent circular holes are processed with the spacing of 2 milometer and carved with corresponding milometer digits, the circle center column and the circular head of the drawing pencil cooperate with the transparent small circular holes, and the point of the drawing pencil circular head is provided with pinpoint, the long edge of the ruler is provided with scales, the circle center column and the drawing pencil are capable of being replaced by pencil. The utility model is capable of drawing angle, triangle, rectangle and polygon of definite value and a series of circular arc with radius spacing of 1 milometer, and has the functions of both protractor and milometer scale. The utility model has the advantages of multiple functions, small volume, light weight and convenience for bring with.

Description

Multi-functional ruler

Technical field

The utility model relates to a kind of stationery, particularly a kind of multi-functional ruler.

Background technology

Use the function singleness of ruler always, can not draw the circle and the angle of definite value, manual drawing multipurpose plotter device, but for the layman, particularly primary and secondary students go up class hour, and carry drawing instrument has inconvenience more, so have to free-handly draw, it is lack of standardization to cause drawing.

Summary of the invention

The purpose of this utility model provides the similar ruler commonly used of a kind of profile, can draw definite value circle, triangle and polygonal multi-functional ruler.

The utility model is realized by following technical proposal: a kind of multi-functional ruler, form by the robust ruler of material, center of circle post and paintbrush, end at ruler is carved with protractor, from its centre dot B, towards the other end, each is two penetrating small sircle holes 3 of 3 millimeters processing and 6 at interval, each 2 millimeters serial penetrating small sircle hole of processing at interval after this, and be carved with the millimeter numeral of part correspondence; The round end of center of circle post and paintbrush and penetrating small sircle hole movingly, the round end top of center of circle post is provided with needle point, is provided with scale on the long limit of ruler; Also available pencil substitutes center of circle post and paintbrush, but pencil-lead and small sircle hole matching loose, it is accurate that drawn circle or circular arc are owed slightly.

The beneficial effects of the utility model are: angle, triangle, rectangle, polygon and the radius distance value that can draw definite value with it are spaced apart 1 millimeter serial circular arc, have the function of protractor and milimeter scale concurrently, have multi-functional, volume is little, advantage in light weight, portable.

Description of drawings

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

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of center of circle post.

Fig. 3 is the floor plan of multi-functional ruler.

Fig. 4 is the A-A cutaway view of Fig. 4.

Fig. 5 is the triangle of drawing with the utility model.

The specific embodiment

Embodiment is as shown in drawings: a kind of multi-functional ruler, form by ruler (1), center of circle post (2) and paintbrush (3), end at ruler (1) is carved with protractor (6), from its centre dot B, towards the other end, each is two penetrating small sircle holes 3 of 3 millimeters processing and 6 at interval, and it is digital that the 2 millimeters processing in each interval serial penetrating small sircle holes (7) after this, and part are carved with corresponding millimeter; The round end (4) of center of circle post (2) and paintbrush (3) and penetrating small sircle hole (7) are movingly.As shown in Figure 2: the round end top of center of circle post (2) is provided with needle point (5); Long limit at ruler (1) is provided with scale.

Draw bowlder, as shown in figures 1 and 3, center of circle post (2) is pressed into the centre dot B of multi-functional ruler, it is the small sircle hole (7) of even numbers that paintbrush (3) inserts radius distance value, is the circle or the circular arc of even numbers around center of circle post (2) radius distance value of can drawing.Also available pencil substitutes center of circle post and paintbrush, but pencil-lead and small sircle hole (7) matching loose, it is accurate that drawn circle or circular arc are owed slightly.

As drawing radius distance value when being odd number circle or circular arc, just center of circle post (2) is pressed into the penetrating small sircle hole 3 of multi-functional ruler, choose radius distance value by Fig. 1 institute target 3,5,7,9,11,13......, paintbrush (3) is inserted corresponding small sircle hole (7), and the radius distance value of can drawing is the circle or the circular arc of odd number.

Draw the triangle of known both

sides

26 and 46 and 30 degree angles, as shown in Figure 5: 1., centre dot B of the present utility model is aimed at the D point and is pressed into center of circle post (2) from D strokes and dots horizontal sides; 2. use paintbrush (3) to insert the hole 46 of multi-functional ruler, the F point draws on horizontal sides; 3. rotate counterclockwise multi-functional ruler, make linea angulata of its 30 degree aim at the horizontal sides DF finished, insert its hole 26, draw the E point with paintbrush (3); 4. connect EF, triangle DEF just draws.

Draw known three edge lengths and respectively be 13,9,5 triangle GHK:, hole 3 of the present utility model is aimed at the G points and is pressed into center of circle post (2) 1. from G strokes and dots straight line; 2. the hole 16 of using paintbrush (3) to insert multi-functional ruler, the H point that on straight line, draws, the GH length of side is 16-3=13; 3. using paintbrush (3) patchhole 12, is the center of circle with the G point, and the radius that draws is the circular arc of 12-3=9; 4. the hole 3 of multi-functional ruler being aimed at the H point and is pressed into center of circle post (2), with paintbrush (3) patchhole 8, is the center of circle with the H point, and the radius that draws is the circular arc of 8-3=5; 5. the intersection point of two circular arcs is exactly the K point, connects the length of side and be 9 the GK and the length of side and be 5 HK, and triangle GHK just draws.

In like manner, the various polygons that can draw.

Claims

1. multi-functional ruler, comprise the robust ruler of material, it is characterized in that: multi-functional ruler is made up of ruler (1), center of circle post (2) and paintbrush (3), end at ruler (1) is carved with protractor (6), from its centre dot B, towards the other end, each is two penetrating small sircle holes 3 of 3 millimeters processing and 6 at interval, after this it is digital that the 2 millimeters processing in each interval serial penetrating small sircle holes (7), and part are carved with corresponding millimeter; The round end (4) of center of circle post (2) and paintbrush (3) and penetrating small sircle hole (7) movingly, the round end top of center of circle post (2) is provided with needle point (5).

2. multi-functional ruler according to claim 1 is characterized in that: the long limit at ruler (1) is provided with scale.