CN202806078U

CN202806078U - Foldable compasses

Info

Publication number: CN202806078U
Application number: CN 201220340823
Authority: CN
Inventors: 朱建阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-13
Filing date: 2012-07-13
Publication date: 2013-03-20
Anticipated expiration: 2022-07-13

Abstract

The utility model relates to foldable compasses, and belongs to the field of teaching tools. The foldable compasses comprise a fixed seat (1), a fixed rod (11), a rotating rod (5), a chalk sleeve (7), a sucker (9) and a wooden handle (12). The foldable compasses are characterized in that the fixed rod (11) and the rotating rod (5) respectively include two portions, a fixed portion (15) is arranged at the upper end of each of the fixed rod and the rotating rod, a telescopic portion (16) is arranged at the lower end of each of the fixed rod and the rotating rod, each fixed portion (15) is provided with a telescopic sliding groove (2), a movable nut (4) is arranged on each telescopic portion (16), arranged in the corresponding telescopic sliding groove (2) and connected with a protractor (3), the fixed rod (11) and the rotating rod (5) are intersected and connected with the fixed seat (1), the wooden handle (12) is arranged on the upper portion of the fixed seat, the lower end of the fixed rod (11) is connected with the sucker (9) through a bolt (10), and the lower end of the rotating rod (5) is connected with the chalk sleeve (7). The foldable compasses can be used for conveniently drawing angles and are anti-slip and more convenient to carry.

Description

Folding compasses

Technical field

The utility model relates to a kind of folding compasses, belongs to the teaching aid field

Background technology

The blackboard majority that present school uses changes glass or metal blackboard into, use pilot pin to fix on most educational compasses fixed bars, this pilot pin is that metal is made, not only scratch easily blackboard, also skidding easily, to cause the picture circle be that depart from the center of circle, and at present used compasses are all oversize, are inconvenient to carry, meet easily the student when walking in the corridor, campus, certain danger is arranged.

The utility model content

According to above the deficiencies in the prior art, the technical problems to be solved in the utility model is: provide a kind of scalable, be easy to carry, but also can draw at any angle angle, and anti-skidding folding compasses.

The technical scheme in the invention for solving the technical problem is: a kind of folding compasses, comprise holder, fixed bar, swingle, chalk sleeve, sucker and wooden handle, it is characterized in that: fixed bar and swingle are divided into two parts, the upper end is standing part, the lower end is scalable part, standing part arranges flexible chute, removable nut is arranged on the scalable part, removable nut is arranged in the flexible chute, be connected with graphometer, fixed bar and swingle mutually give holder to connect, and holder top is provided with wooden handle, the fixed bar lower end is bolted sucker, and the swingle lower end connects chalk sleeve.Carry the aspect, anti-skidding, and can make at any angle angle.

The upper end is provided with spring in the described chalk sleeve, and the spring lower end is provided with catch, pushes away handle on the catch.Can push away handle according to the length of chalk, save chalk.

Folding compasses beneficial effect of the present utility model is: before fixed bar and swingle graphometer is set, not only can make things convenient for the picture angle, can also prevent automatically sliping off of picture bowlder fixed bar and swingle, because the retractable of fixed bar and swingle, described compasses are more convenient for carrying, adopt sucker to replace pilot pin, increased the friction with seriticker, make compasses be not easy to skid.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of chalk sleeve.

Among the figure: 1, holder; 2, flexible chute; 3, graphometer; 4, removable nut; 5, swingle; 6, push away handle; 7, chalk sleeve; 8, chalk; 9, sucker; 10, bolt; 11, fixed bar; 12 wooden handles; 13, spring; 14, catch; 15, standing part; 16, scalable part.

The specific embodiment

Below in conjunction with accompanying drawing enforcement of the present utility model is described further:

Shown in Fig. 1-2, a kind of folding compasses, comprise holder 1, fixed bar 11, swingle 5, chalk sleeve 7, sucker 9 and wooden handle 12, fixed bar 11 and swingle 5 are divided into two parts, the upper end is standing part 15, the lower end is scalable part 16, standing part 15 arranges flexible chute 2, removable nut 4 is arranged on the scalable part 16, and removable nut 4 is arranged in the flexible chute 2, is connected with graphometer 3, fixed bar 11 is connected with swingle and is given mutually holder 1 to connect, holder top is provided with wooden handle 12, and fixed bar 11 lower ends are by bolt 10 connecting suckers 9, and swingle 5 lower ends connect chalk sleeve 7.The upper end is provided with spring 13 in the chalk sleeve, and spring 13 lower ends are provided with catch 14, push away handle 6 on the catch 14.Chalk sleeve 7 clamping chalks 8.

Operation principle and use procedure:

When the utility model uses, the scalable part 16 of swingle 5 and fixed bar 11 is skidded off and fixes by flexible chute 2, separately swingle 5 and fixed bar 11, the sucker 9 of fixed bar lower end is fixed on the blackboard, rotation swingle 5 gets final product, and the utility model is simple in structure, and is easy to use.

Claims

1. folding compasses, comprise holder (1), fixed bar (11), swingle (5), chalk sleeve (7), sucker (9) and wooden handle (12), it is characterized in that: fixed bar (11) and swingle (5) are divided into two parts, the upper end is standing part (15), the lower end is scalable part (16), standing part (15) arranges flexible chute (2), removable nut (4) is arranged on the scalable part (16), removable nut (4) is arranged in the flexible chute (2), be connected with graphometer (3), fixed bar (11) is connected 5 with swingle) give mutually holder (1) to connect, holder top is provided with wooden handle (12), fixed bar (11) lower end is by bolt (10) connecting sucker (9), and swingle (5) lower end connects chalk sleeve (7).

2. folding compasses according to claim 1 is characterized in that: the upper end is provided with spring (13) in the described chalk sleeve, and spring (13) lower end is provided with catch (14), pushes away handle (6) on the catch (14).