CN202038062U

CN202038062U - Compass pad

Info

Publication number: CN202038062U
Application number: CN2011201423414U
Authority: CN
Inventors: 张豪心
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-09
Filing date: 2011-05-09
Publication date: 2011-11-16
Anticipated expiration: 2021-05-09

Abstract

A compass pad comprises an upper thin plastic cover and a lower thin plastic cover. A concave body is arranged in the center of the lower thin plastic cover, a through hole is arranged in the center of the upper thin plastic cover, and a hollow round metal shell is arranged between the lower thin plastic cover and the upper thin plastic cover. A cross section is arranged above the round metal shell. The lower portion of the round metal shell is arranged inside the concave body of the lower thin plastic cover. The through hole of the upper thin plastic cover is arranged on the cross section of the round metal shell, and the round metal shell is larger than the through hole. An annular magnet is installed in the center of the lower thin plastic cover. The upper thin plastic cover and the lower thin plastic cover are made of transparent plastics. A needle hole can not be reserved on a piece of paper when the compass pad is installed on a compass to be used, and the compass is not easy to slide when the compass is used on a metal blackboard. The compass pad is simple in structure and easy to use.

Description

A kind of compasses pad

Technical field

The utility model relates to a kind of stationery, specifically a kind of compasses pad.

Background technology

Compasses are one of the most frequently used drawing appliances, and existing compasses weak point is: compasses one end is pencil stub or the pencil-lead that is used to paint, and the other end is the compasses syringe needles.Because the material that compasses are painted generally is a paper, and fixedly the each mapping of the syringe needle in the center of circle all can stay duck eye, not only the untapped paper in painting paper back is caused damage, also can cause the visual destruction of drawing, aesthetic feeling is impacted because of staying too much hole.

Compasses also are one of the most frequently used drawing appliances in the teaching, and following weak point is arranged when using on the metal blackboard: because the metal blackboard is smooth and hard, want when using large-scale compasses to draw with hand steered firmly auxiliary fixing.The syringe needle that uses compasses slides fixedly the time easily, as if dynamics is excessive blackboard is caused to a certain degree damage.Also there is certain danger simultaneously.

The utility model content

Technical problem to be solved: the utility model provides a kind of compasses pad that is contained on the compasses syringe needle for overcoming above-mentioned prior art shortcoming, can stop the pin hole, and protection paper, compasses are difficult for sliding.

Technical scheme: a kind of compasses pad, comprise thin plastic cover and following thin plastic cover, a concave volume is established at described thin plastic cover center down, go up thin plastic cover center and establish a through hole, thin plastic cover down with on be equipped with between the thin plastic cover in empty round metal shell, be a cross section above the round metal shell, round metal shell bottom is located in the concave volume that approaches plastic cover, the through hole of going up thin plastic cover is located at above the cross section of round metal shell, and described round metal shell is greater than through hole.

Further, at described thin plastic cover center down annular magnet is installed.Going up thin plastic cover is perspex with following thin plastic cover.

Beneficial effect: the utility model is owing to adopt such scheme, and using compasses to draw can be on paper

Stay the pin hole, thereby protected paper better.Because what use is the round metal shell, has increased the service life of compasses pads greatly.At thin plastic cover center down annular magnet is installed, because of the magnetic effect, compasses are difficult for sliding when using on the metal blackboard.

Description of drawings

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

Fig. 2 is the utility model STRUCTURE DECOMPOSITION schematic diagram.

Fig. 3 is the utility model schematic diagram when being contained on the compasses.

Fig. 4 is that the utility model is contained on the compasses, uses schematic diagram on the metal blackboard.

Among the figure: round metal shell 1, following thin plastic cover 2, upward thin plastic cover 3, through hole 4, concave volume 5, cross section 6, annular magnet 7, compasses pad 8, metal blackboard 9, compasses 10.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing: see Fig. 1-4, a kind of compasses pad, comprise thin plastic cover 3 and following thin plastic cover 2, a concave volume 5 is established at described thin plastic cover 2 centers down, go up thin plastic cover 3 centers and establish a through hole 4, thin plastic cover 2 down with on be equipped with between the thin plastic cover 3 in the round metal shell 1 of sky, round metal shell 1 top is a cross section 6.Going up thin plastic cover 3 is perspex with following thin plastic cover 2.

Round metal shell 1 bottom is located in the concave volume 5 of thin plastic cover 2, and useful binders is fixed.

The through hole 4 of going up thin plastic cover 3 is located at above the cross section 6 of round metal shell 1, and described round metal shell 1 is greater than through hole 4.Effect is that round metal shell 1 can not deviate from from through hole.

Useful binders is fixed between upward thin plastic cover 3 and the following thin plastic cover 2.

At thin plastic cover 2 centers down annular magnet 7 is installed.Effect is to inhale mutually with the metal blackboard.

During use, the round metal shell 1 that the compasses syringe needle is inserted compasses pad 8 is interior aerial, and sky preferably can press from both sides steady compasses syringe needle in the round metal shell.

See Fig. 3, when compasses pad 8 is contained on the compasses 10.See Fig. 4, compasses pad 8 is contained on the compasses 10, uses on metal blackboard 9.

Claims

1. compasses pad, comprise thin plastic cover (3) and following thin plastic cover (2), it is characterized in that, a concave volume (5) is established at described thin plastic cover (2) center down, go up thin plastic cover (3) center and establish a through hole (4), empty round metal shell (1) in being equipped with between thin plastic cover (2) and the last thin plastic cover (3) down, round metal shell (1) top is a cross section (6), round metal shell (1) bottom is located in the concave volume (5) of thin plastic cover (2), the through hole (4) of going up thin plastic cover (3) is located at above the cross section (6) of round metal shell (1), and described round metal shell (1) is greater than through hole (4).

2. a kind of compasses pad according to claim 1 is characterized in that, at described thin plastic cover (2) center down annular magnet (7) is installed.

3. a kind of compasses pad according to claim 1 is characterized in that, upward thin plastic cover (3) is a perspex with following thin plastic cover (2).