CN2041628U

CN2041628U - Multipurpose parallel ruler

Info

Publication number: CN2041628U
Application number: CN 88220693
Authority: CN
Inventors: 林魁普
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-11-30
Filing date: 1988-11-30
Publication date: 1989-07-26

Abstract

The utility model relates to a multipurpose parallel ruler which is interconnected by two straight rules (1, 2) with equal length and two link bars (3, 4) with equal length by making use of the unstable principle of the parallelogram. Two crossed line segments A and B and the perpendicular line C of the straight rule are graved on the two straight rules, and the included angles between the A and B line segments and the straight rule are 45 DEG. The perpendicular line C passes through the intersection point O of the A and the B. The visual pictures of the parallel lines, the level plan, the number axis, the orthogonal coordinate, etc., can be made by making use of the utility model. The utility model has the advantages of simple structure, low cost and convenience for carrying.

Description

Multipurpose parallel ruler

The utility model belongs to the cultural goods drawing instrument.

In routine work and study, draw figure such as parallel lines, parallelogram and also do not have a kind of handy specific purpose tool, usually need that some connects and finishes surely by set square dislocation or ruler, these are concerning teachers ' teaching, student's study and engineers and technicians, not only very bother, and the drawing mistake appears in Chang Keneng.

The purpose of this utility model task is to provide a kind of parallel rule of using of simple in structure, easy to use and accurate standard for teacher, student and engineers and technicians draw more.

These are many to mark outside required parallel lines or the parallelogram quickly and accurately with the parallel rule decapacitation, can also mark number axis, rectangular coordinate system, reference axis translation, horizontal plane figure, straight line and plane parallel or various visual pictures such as vertical by it.This many with parallel rule also have cheap, advantage such as be easy to carry.

Structure of the present utility model is such: it utilizes the unstable principle of parallelogram, interconnect by two isometric rulers and two isometric connecting rods and to form, specific practice is: with neat long closing up of two rulers, with bolt or rivet two connecting rods parallel to each other are fixed on two rulers, its fixing point should be at the two ends of connecting rod.Like this, when fixing a ruler, during another ruler of push-and-pull, can mark some required equality lines along ruler.

In order to mark level plan, number axis and rectangular coordinate system etc. easily by above-mentioned parallel rule, be carved with angle on two rulers that close up is two cross spiders of 45 °, and crosses intersection point and also be carved with a ruler vertical line.

Easy to operate for using, every ruler central authorities establish a handrail.

Accompanying drawing is the utility model embodiment schematic diagram.Wherein, ruler (1,2) is identical, on them, is fixed with two connecting rods parallel to each other (3,4) with bolt (5), and its fixing point is at the connecting rod two ends, and ruler central authorities respectively establish a handrail (6,7).Line segment A, B intersect, and they are 45 ° with the angle of ruler, and its intersection point of mistake O is provided with ruler vertical line C.

When using this chi to make level plan, can make two parallel lines, utilize line segment A or B to find out 2 points of two other parallel lines respectively then, promptly mark the level plan of a standard by a connection by the push-and-pull ruler.When utilizing this chi to make number axis or rectangular plots,, rotate parallel rule then, make ruler vertical line C overlapping, can make another vertical line along parallel rule with this horizontal line section or vertical line segment on one side utilize ruler to make a horizontal line section or vertical line segment earlier.Make other visual picture as reference axis translation, straight line and plane parallel or vertical, all can utilize the overlapping or mobile of ruler vertical line C line and certain straight line to make.

The utility model can be selected different materials according to the needs of different user, makes various models.

Claims

1, a kind of uses parallel rule more, comprise two rulers (1,2), it is characterized in that two rulers are isometric, and on them, be fixing point, be fixedly connected with two isometric and be parallel to each other connecting rods (3,4) with the connecting rod two ends; The line segment A, the B that are located on the ruler intersect mutually, and the angle of they and ruler is 45 °, and ruler vertical line C crosses A, B line intersection point 0.

2, use parallel rule according to claim 1 is described more, it is characterized in that above-mentioned two rulers (1,2) central authorities respectively establish a handrail (6,7).