CN2531950Y

CN2531950Y - Multi-function protractor

Info

Publication number: CN2531950Y
Application number: CN 02230625
Authority: CN
Inventors: 张立成
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-31
Filing date: 2002-03-31
Publication date: 2003-01-22
Anticipated expiration: 2012-03-31

Abstract

The utility model discloses a measuring tool, in particular to a multifunctional protractor which combines the functions of a common protractor, a ruler, a set square, a compass and a meter. The utility model primarily comprises a tool body, a moveable ruler, a meter and a compass, which are conglutinated together or locked up together, wherein the tool body is composed of a ruler and a set square; an interlayer block is sandwiched between the tool body and the protractor and the interlayer block has the same width with the inner graduated arc along the excircle of the protractor and a certain area with the same width as the moveable ruler is left; the moveable ruler and the finger of the moveable ruler are integrated into a whole; a meter finger and a device to draw circles are also provided. The utility model is simple in structure, unique in shape, bijou, practical and convenient, and can be used to draw angles, straight lines and parallel lines, and to measure angles, gradient, verticalness and be used as a right angled ruler and a bow compass, with the mini type suitable for technical secondary school students and primary school students and the big type suitable for factories and worksites.

Description

Multi-function protractor

The utility model relates to a kind of survey tool, particularly can collect protractor, ruler, set square, compasses and estimate table to be the multi-function protractor of one.

At present people are in daily life, work or study, and contact picture or measure the angle of an object is drawn straight line, parallel lines or drawn bowlder, survey gradient, when perpendicularity or levelness, need carry several instruments, very inconvenient, particularly for students in middle and primary schools, increased a lot of burdens especially.

The multi-function protractor of wanting utility model is for remedying the deficiencies in the prior art, provide a kind of collect protractor, ruler, set square, compasses and estimate table be the multi-function protractor of one.

Technical solution of the present utility model is: by the protractor body, adjustable rule, the compasses protractor, estimate the multi-function protractor that table four part is formed, the protractor body comprises ruler and set square, do bottom and adjustable rule with the protractor body, mutual bonding or fixed bit pin of three layers of protractors and gong silk are fixed, adjustable rule pointer and adjustable rule are one, be fixed on the cambered way of protractor by locking gong bolt, estimate indicator device on protractor, in protractor body and protractor intermediate course, also establish interlayer shelves, the interlayer shelves along the cylindrical of protractor and interior scale camber line with wide, and leaving the neutral gear of adjustable rule same widths, protractor body front end and adjustable rule front end are respectively equipped with the draw point of picture circle and the device of fixing pen.

The utility model is simple in structure, and the moulding uniqueness is small and exquisite attractive in appearance, easy to use, can arbitrarily draw angle, angulation, picture vertical line, parallel lines, survey gradient, perpendicularity, levelness etc., also can replace inside and outside right angle to turn chi and picture circle.

The utility model is provided by the following drawings and embodiment:

Fig. 1 is an overall structure schematic diagram of the present utility model

Fig. 2 is a side structure schematic diagram of the present utility model

In conjunction with the accompanying drawings and embodiments concrete structure of the present utility model and working method are done detailed description:

Multi-function protractor; by the protractor body; adjustable rule; estimate table; compasses four parts are formed; protractor body 1 is fixed as mutual bonding or fixed bit lock of three layers of transparent protractors of bottom and adjustable rule 2 and gong silk; adjustable rule pointer 3 is an one with adjustable rule 2; be fixed on the cambered way 8 of upper strata protractor by locking gong bolt 7; estimate indicator 4 and be installed in the upper strata of protractor; estimate table then on the cover and cover rotary middle spindle 5 of 6 usefulness and pad passes fixing up and down; be provided with pencil lead locking device 9 is provided with the picture center of circle at protractor body front end draw point 11 at adjustable rule 2 front ends; interlayer shelves 12 are located at protractor and device body; in the intermediate course of bottom; along the cylindrical of protractor and interior scale camber line with wide; interlayer shelves 12 just in time leave the neutral gear with adjustable rule 2 same widths; when adjustable rule 2 closes up or opens, can both lean against on the interlayer shelves onsidely, adjustable rule 2 is closed up or opens to keep 180 °; also be provided with pen shelves 13 at adjustable rule 2 middle parts, be used for shelves pen or plumbous.Need angulation, draw the angle, when drawing vertical line or parallel lines, at first counterclockwise rotate the locking gong bolt 7 of relaxation exercise chi, open adjustable rule 2 and reserve needed angle, see that the scale that adjustable rule pointer 3 is aimed in the dial plate promptly is the angle at exterior angle in the adjustable rule; When you need survey gradient, perpendicularity or levelness, see and estimate pointer 4 in the dial plate, adjustable rule 2 is opened 180 ° or the plane that closes up chi get final product near the measured object plane.Adjustable rule 2 closes up can work as short chi, can work as long chi when opening 180 ° and use, can also be more accurate and visual, and reading the picture radius is that 1-12cm is with interior circle.Miniature dimensions is no more than long 18cm, high 6.5cm, and thick 2.5cm can be used for big, special secondary school and students in middle and primary schools and uses, and can be contained in the writing case, and up-sizing can be made into the survey tool that metal device body is applicable to factory, building site.

Claims

1, multi-function protractor, by the protractor body, adjustable rule, estimate table, four parts such as compasses are formed, it is characterized in that: amount Xie Qishen comprises ruler and set square, amount is separated device body and adjustable rule, protractor up and down three layers of mutual bonding or steady pin and gong silk is fixed, adjustable rule pointer and adjustable rule are one, be fixed on the cambered way of protractor by locking gong bolt, estimating indicator is installed in above the protractor, in protractor body and protractor intermediate course, also establish interlayer shelves, the cylindrical of the sticking protractor of interlayer shelves and interior scale camber line be with wide, and leave the neutral gear with the adjustable rule same widths.

2, according to the described multi-function protractor of claim, its feature also is: protractor is elegant phaneroplasm, with device body and adjustable rule mutually bonding or steady pin fix, estimate indicator and be installed on the protractor by rotary middle spindle, be covered with the transparent table lid of estimating above.

3, multi-function protractor according to claim 1 and 2, its feature also is: the auspicious draw point that is provided with the picture center of circle before the protractor body, adjustable rule front end are established locking pen or plumbous device, and the adjustable rule middle-end also is provided with the pen shelves.