CN2236408Y

CN2236408Y - Multifunctional assembled drawing instrument

Info

Publication number: CN2236408Y
Application number: CN 95220416
Authority: CN
Inventors: 李权武
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-21
Filing date: 1995-08-21
Publication date: 1996-10-02
Anticipated expiration: 2005-08-21

Abstract

The utility model relates to a multifunctional assembled drawing instrument, comprising an axis scale with one end hinged and the other used as leg of compass and a graphometric square. The utility model is characterized in that the hinged end of the axis scale is provided with an arrow rocking with it, and the hinged end of the graphometric square is provided with a semi-circle graduated plate. There are at least two graduations marked for the arrow to indicate on the semi-circle graduated plate. One is an angle graduation corresponding to the included angle of the two scales, and the other is a radius graduation corresponding to the distance between the two legs. The utility model gathers the flat ruler, the angle gage and the compass at one body, being able to draw the radius of circle directly by itself with enormous convenience.

Description

Multi-functional combined mapper

The utility model relates to a kind of surveying and mapping tool.

In the prior art, no matter be the circle tool that only possesses single compasses structure, still be respectively the disclosed surveying and mapping tool that integrates ruler, protractor and compasses function of Chinese utility model patent specification of 86206656U and 93229555.X as the patent No., all can not rely on and himself directly make the picture radius of circle, thereby make troubles to use.

The purpose of this utility model is to avoid the existing weak point of above-mentioned prior art, a kind of drawing instrument is provided, can not only integrate ruler, protractor, compasses function, and, can be not by other survey tool, rely on and himself directly make the picture radius of circle, the multi-functional combined mapper of forming by axle chi and graphometric square.

The purpose of this utility model is realized by following technical scheme.

The utility model comprises the two ruler members that an end is hinged, i.e. axle chi and graphometric square, and two chis can be done relative swing, and two chi free ends are as the compass foot point.Its architectural feature is:

The hinged end direct-axis chi reverse extending line of a. described axle chi is provided with the finger meter with its swing.

B. the hinged end of described graphometric square is the center of circle with the pin joint, with graphometric square and reverse extending line thereof is the bottom surface, the semicircle scale plate is set, at least sign has two kinds of scales of being indicated by pointer on described semicircle scale plate, the first and the corresponding angle index of two chi angles, its two be with the bipod dot spacing from corresponding radius scale.

In the utility model, because the distance to compasses bipod point is a certain value from two chi pin joints, therefore, distance between bipod point is promptly proportional with angle, principle according to this, can the scale plate high scale go out by pointer indication, draw the corresponding indicating value of radius of circle with compasses, in use, can accurately make the picture radius of circle according to this indicating value; And utilize the compasses bipod to can be used as slide calliper rule.Compared with the prior art, the utility model is not only simple in structure, and multiple functional, and is especially suitable to schooling apparatus, can greatly make things convenient for use.

Accompanying drawing is the utility model structural representation.

More than, in conjunction with the accompanying drawings the utility model is further described by embodiment.

Embodiment:

Referring to accompanying drawing, axle chi 1 and graphometric square 2 are two ruler members, and sign has the ruler scale on it, and all there is the scale sign both sides of axle chi 1, and two rulers, one end is hinged, and the other end is as the compass foot point, and two rulers can be swung relatively.As ruler, the longest straight line that can measure is two rulers when being launched into level, axle chi and graphometric square length sum.

At the hinged end direct-axis chi reverse extending line of axle chi 1 pointer 3 with its swing is set; Hinged end at graphometric square 2, with the pin joint is the center of circle, with graphometric square and reverse extensions thereof is the bottom surface, semicircle scale plate 4 is set, on this semicircle scale plate 4, at least sign has two kinds of scales by pointer 3 indication, promptly with the corresponding angle index of two chi angles and with the bipod dot spacing from corresponding radius scale.

Use for convenience, in the present embodiment, also on semicircle scale plate 4, offer oval nib 5 and parabola nib 6.

In order to make axle chi 1 and graphometric square 2 launch or when closing up, its bottom surface ulnar side is the plane, can offer male and fomale(M﹠F) respectively on axle chi and relevant position, graphometric square bottom surface, so that cooperatively interact.

Claims

1, multi-functional combined mapper comprises the two ruler members that an end is hinged, i.e. axle chi (1) and graphometric square (2), and two chis can be swung relatively, and two chi free ends is characterized in that as the compass foot point:

The hinged end direct-axis chi reverse extending line of a. described axle chi (1) is provided with the pointer (3) with its swing;

The hinged end of b. described graphometric square (2) is that the center of circle is the bottom surface with graphometric square and reverse extending line thereof with the pin joint, semicircle scale plate (4) is set, at least sign has two kinds of scales of being indicated by pointer (3) on described semicircle scale plate (4), the first and the corresponding angle index of two chi angles, its two be with the bipod dot spacing from corresponding radius scale.