CN2333552Y

CN2333552Y - Multi-functional angulometer

Info

Publication number: CN2333552Y
Application number: CN 98235834
Authority: CN
Inventors: 黄进元
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-05-29
Filing date: 1998-05-29
Publication date: 1999-08-18
Anticipated expiration: 2008-05-29

Abstract

The utility model belongs to stationery. The utility model mainly solves the defect of poor accuracy and large measurement error of the existing multifunctional mapping stationery. The utility model is characterized in that the same sides of two flat rulers are respectively connected with one end of an angle measuring ruler and one end of a radius graduated scale with the same center of circle of the 0 point, wherein, one end of one flat ruler is opposite to one end of the other flat ruler. The external edge of the angle measuring ruler and the internal edge of the radius graduated scale are both provided with teeth engaged with the drive gear. The angle measuring ruler and the radius graduated scale are both positioned in a fixing seat with a spin handle. The fixing seat is provided with a knob. The other end of each of the two flat rulers is respectively provided with a center of circle socket and a pen cap socket. The utility model has the functions of an angle gage, a flat ruler and a protractor.

Description

Multi-function protractor

The utility model belongs to stationery.

The stationery that existing protractor, ruler and compasses normally only have simple function separately, use separately, Chinese patent provides a kind of " multi-functional combined mapper " for No. 95220416, can integrate ruler, protractor and three kinds of functions of compasses, but owing to adopt articulated structure, make accuracy relatively poor, measure error is bigger, and inconvenient operation.

The purpose of this utility model provide a kind of rational in infrastructure, easy to use, measure multi-function protractor accurately.

The utility model can be realized by following mode:

Article two, the same side of the ruler that an end is closely relative is that the semicircular arc bevel protractor of together circle center and an end of half arc radius rule are connected with two with the O point respectively, the inward flange of the outward flange of bevel protractor and radius rule all has the tooth that is meshed with at least three intermeshing travelling gears, bevel protractor and radius rule and travelling gear all are positioned at the semicircular arc holder that has swing handle, and the position of idler gear and swing handle all is positioned on the extension straight line of two ruler abutting ends, is equipped with on the holder to control the knob that idler gear rotates, article two, the other end of ruler is equipped with center of circle seat and the pen cap seat that is used for fixing draw point and pen core respectively.

The utility model is rational in infrastructure, and two rulers that an end is closely relative and two bevel protractors and radius rule by the holder close positioning can guarantee the accuracy of measurement, and can realize protractor, ruler and three kinds of functions of compasses easily.

Accompanying drawing 1 is the utility model structural representation.

Accompanying drawing 2 is the user mode schematic diagram.

Among the figure: 1--ruler, 2--bevel protractor, 3--radius rule, 4--travelling gear, 5--tooth, 6-swing handle, 7--holder, 8--knob, 9--center of circle seat, 10--pen cap seat.

Further specify embodiment below in conjunction with accompanying drawing:

Ruler 1, bevel protractor 2 and radius rule 3 all adopt the transparent plastic manufacturing, and totally three of numeral, the travelling gears 4, swing handle 6 and the knob 8 that are carved with expression length, angle and radius length respectively all adopt the thin iron manufacturing of chromium plating, holder 7 adopts the manufacturing of chromium plating sheet iron, and assembling each parts by aforementioned manner promptly becomes the utility model.

During use, when turning knob 8, bevel protractor 2 will be that the center of circle two rulers 1 of drive are done relative or rightabout circular motion together with 0 with radius rule 3, article two, promptly to become with 0 be the angle line of angle in the sideline of ruler 1, can be directly scale from the bevel protractor 2 read corresponding angle number easily, arbitrarily the corner dimension that changes two rulers 1 can be realized the protractor function, it is the radius of a circle that draws in the center of circle that the length on the pairing limit of while angle is with center of circle seat 9, also can be directly scale from the radius rule 3 read easily, also can realize the compasses function by rotating swing handle 6, when angle is 180 °, article two, ruler is straight line, can realize the ruler function.

Claims

A kind of multi-function protractor, the same side that it is characterized in that the ruler that two one ends are closely relative is that the semicircular arc bevel protractor of together circle center and an end of semicircular arc radius rule are connected with two with the O point respectively, the inward flange of the outward flange of bevel protractor and radius rule all has the tooth that is meshed with at least three intermeshing travelling gears, bevel protractor and radius rule and travelling gear all are positioned at the semicircular arc holder that has swing handle, and the position of idler gear and swing handle all is positioned on the extension straight line of two ruler abutting ends, is equipped with on the holder to control the knob that idler gear rotates, article two, the other end of ruler is equipped with center of circle seat and the pen cap seat that is used for fixing draw point and pen core respectively.