CN2920692Y

CN2920692Y - Multipurpose combined protractor

Info

Publication number: CN2920692Y
Application number: CN 200620042773
Authority: CN
Inventors: 赵泰钧
Original assignee: NANXIANG TOWN CENTRAL PRIMARY SCHOOL JIADING DISTRICT
Current assignee: NANXIANG TOWN CENTRAL PRIMARY SCHOOL JIADING DISTRICT
Priority date: 2006-06-13
Filing date: 2006-06-13
Publication date: 2007-07-11
Anticipated expiration: 2016-06-13

Abstract

The utility model relates to a drawing aided article for use, in particular to a protractor. The multifunction combined protractor stated in the utility model comprises a protractor and a pole ruler. A hole is arranged at 0 degree line midpoint of the protractor, namely at the center of the protractor semicircular. Another hole is arranged on the pole ruler. The protractor and the pole ruler are movably connected by a small rivet through the two holes. The utility model is characterized in that: the hole of the pole ruler is positioned in the middle of the pole ruler, the pole ruler comprises the part implementing the range pole function on both sides of the hole, and the part implementing angle-constructing function. The part of the pole ruler implementing the range pole function has a edge implementing range pole function, the edge coincides with the 0 DEG C. line of the protractor. An opening is positioned on the part of the pole ruler implementing angle-constructing function. The opening comprises two edges that can run parallel to the edge implementing range pole function. The utility model, which structure is simple, not only can be used measuring angle, constructing angle, but also can make the pole ruler to be used as a straightedge. Using the utility model, to measure angle and to construct angle can be done very quickly and accurately.

Description

Multipurpose composite angle protractor

Technical field

The utility model relates to a kind of drawing assistant product, is specifically related to a kind of protractor, particularly a kind of composite angle protractor.

Background technology

Present common protractor has many inconvenience in use, as angulation, cumbersome when drawing the angle, in the time of particularly will measuring the short angle of side ratio, could read the number of degrees exactly after must prolonging the limit earlier, and when drawing the angle, because the limitation of common protractor itself must be taken away protractor and just can finish the angle after the angle of having determined to draw, these all can influence the degree of accuracy undoubtedly, also can influence mapping efficient.

In order to address the above problem, people have done a lot of improvement to protractor.As publication number is that the Chinese patent of CN2540286 discloses a kind of protractor, and this protractor is made of support, rotating shaft, protractor, little lattice chi, and support is installed in the lower position of protractor, the bonding two ends upper side position that is installed in support of protractor.Though this protractor has solved the accuracy problems of drawing the angle,, aspect angulation, the structures shape of this protractor itself each angulation all must use little lattice chi in this angle gage structure to locate the scale of protractor, not convenient so on the contrary.

The utility model content

The purpose of this utility model is to provide a kind of simple in structure, easy-to-use multipurpose protractor, with solve with the stock on hand hornwork draw angle and the angulation degree of accuracy be not very high, draw the problem more than angle and the angulation step.

The purpose of this utility model reaches by the following technical programs:

A kind of multipurpose composite angle protractor, comprise protractor and mark post chi, the circle centre position that also is the protractor semicircle at 0 ° of line mid point of protractor is provided with a hole, one corresponding hole also is set on the mark post chi, pass two holes with little rivet protractor, mark post chi are flexibly connected, it is characterized in that: the hole on the mark post chi is arranged on the middle part of mark post chi; The mark post chi comprises the part of the execution mark post function that occupy the both sides, hole respectively, the part of execution picture angle function; The part of described mark post chi execution mark post function has the limit of an execution mark post function that can overlap with 0 ° of line of protractor; The part that described mark post chi is carried out picture angle function is provided with flatly, and described mouth comprises two energy and the parallel limit, limit of carrying out the mark post function.

Can put on centimeter scale on the described mark post chi.

Since adopted said structure, of the present utility model simple in structure, use the utility model, not only energy angular picture angle, and its mark post chi can also be used as ruler, has realized multipurpose of the present utility model.Use the utility model, comparatively rapidly and accurately angulation, picture angle.

Description of drawings

Fig. 1 is the structural representation of the protractor of multipurpose composite angle protractor described in the utility model

Fig. 2 be multipurpose composite angle protractor described in the utility model the structural representation of mark post chi

Fig. 3 is the structural representation of multipurpose composite angle protractor described in the utility model

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.

Embodiment 1

Referring to Fig. 1,2,3, a kind of multipurpose composite angle protractor, comprise protractor 1 and mark post chi 4, the circle centre position that also is the protractor semicircle at 0 ° of line 2 mid point of protractor is provided with a hole 3, in order to improve the degree of accuracy of the present utility model, the hole 3 of circle centre position setting one is the circular hole at center with this center of circle preferably, and hole 3 is as far as possible little, one corresponding hole 7 also is set on the mark post chi, passes two holes with little rivet 11 protractor 1, mark post chi 4 are flexibly connected.Hole 7 on the mark post chi 4 is arranged on the middle part of mark post chi 4; Mark post chi 4 comprises the part 6 of the execution mark post function that occupy 7 both sides, hole respectively, the part 5 of execution picture angle function; The part 6 of described mark post chi execution mark post function has the limit 8 of an execution mark post function that can overlap with 0 ° of line 2 of protractor, in order to make limit 8 more eye-catching, can give limit 8 painted, as paint redness; The part 5 that described mark post chi is carried out picture angle function is provided with flatly, and described mouth comprises the limit 9,10 that two energy are parallel with the limit 8 of carrying out the mark post function.

Can put on centimeter scale on the described mark post chi 4, make mark post chi 4 have the function of ruler.

When using the utility model measuring angle, need only the summit at the centrally aligned angle in the hole 3,7 that rivet 11 is passed, 0 ° of line 2 of a limit amount of alignment hornwork at angle, rotate mark post chi 4,8 another limits of aligning, limit of carrying out the mark post function just can measure angle easily, no matter be the length of the length of side at angle, the utility model can both easily measure angle exactly.

When drawing the angle, as long as reserve angle with mark post chi 4, utilize the mouth of carrying out picture angle funtion part limit 9 or 10 and the straight flange 12 of protractor just can finish the angle very easily, unlike with common protractor picture angle, divide several steps.

The mark post chi can also use as ruler, has realized multipurpose of the present utility model.

And, also because mark post chi 4 is bilevel with protractor 1, when using 4 setting-outs of mark post chi, there is the space below the mark post chi 4, so in 4 setting-outs of mark post chi, ink can not gone on the paper, makes paper cleaner.

More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1, a kind of multipurpose composite angle protractor, comprise protractor and mark post chi, the circle centre position that also is the protractor semicircle at 0 ° of line mid point of protractor is provided with a hole, one hole also is set on the mark post chi, pass two holes with little rivet protractor, mark post chi are flexibly connected, it is characterized in that: the hole on the mark post chi is arranged on the middle part of mark post chi; The mark post chi comprises the part of the execution mark post function that occupy the both sides, hole respectively, the part of execution picture angle function; The part of described mark post chi execution mark post function has the limit of an execution mark post function that can overlap with 0 ° of line of protractor; The part that described mark post chi is carried out picture angle function is provided with flatly, and described mouth comprises two energy and the parallel limit, limit of carrying out the mark post function.

2, a kind of multipurpose composite angle protractor according to claim 1 is characterized in that, can on described mark post chi centimeter scale be set.