CN201970719U

CN201970719U - Sucker type cyclograph with adjustable radius

Info

Publication number: CN201970719U
Application number: CN201120040275XU
Authority: CN
Inventors: 章则雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-11
Filing date: 2011-02-11
Publication date: 2011-09-14
Anticipated expiration: 2021-02-11

Abstract

The utility model relates to a sucker type cyclograph with adjustable radius, which comprises a cyclograph body. A rotating shaft is arranged at one end of the cyclograph body, a sucker is connected on the rotating shaft, the cyclograph body is provided with a through hole and scale values, and is provided with a radius adjusting part in a penetrating manner, and the part of the radius adjusting part, above the cyclograph body, is provided with a reading hole and a chalk fixing hole. When the sucker type cyclograph with adjustable radius is used, according to the radius of the circle to be drawn, the radius adjusting part moves from left to right along the direction of the scale values on the cyclograph body, then the chalk is arranged in the chalk fixing hole, the cyclograph is fixed on a blackboard by the sucker, the cyclograph body is rotated by the rotating shaft, and the cycle with a corresponding radius drawn by the chalk fixed in the chalk fixing hole.

Description

A kind of sucked type cyclograph of regulating radius

Technical field

The utility model relates to a kind of cyclograph, relates in particular to a kind of sucked type cyclograph of regulating radius.

Background technology

The teacher generally uses compasses when the blackboard upper drawing circle, because the surperficial smoother of blackboard is easy in the process of drawing circle, make compasses landing from the blackboard, and the circle of drawing different radii to need to regulate the radius of compasses cumbersome.

The utility model content

The utility model is in the process of drawing circle, compasses landing from the blackboard easily, and draw the cumbersome deficiency of radius that the circle of different radii needs to regulate compasses, a kind of sucked type cyclograph of regulating radius is provided.

The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of sucked type cyclograph of regulating radius comprises the cyclograph body, one end of described cyclograph body is provided with rotating shaft, be connected with sucker in the described rotating shaft, have through hole and scale value on the described cyclograph body, be equipped with the radius adjusting portion on the described cyclograph body, described radius regulator site has reading hole and chalk fixing hole in the part of cyclograph body top.

The beneficial effects of the utility model are: the sucked type cyclograph that uses the utility model can regulate radius is drawn bowlder, according to drawing the radius of a circle size, the radius adjusting portion is made move left and right along the direction of cyclograph body scale value, chalk is put in the chalk fixing hole again, by sucker cyclograph is fixed on the blackboard, and by rotating shaft rotation cyclograph body, can draw by the chalk in the chalk fixing hole has the circle of relevant radii.

Description of drawings

Fig. 1 can regulate the front view of the sucked type cyclograph of radius for the utility model;

Fig. 2 can regulate the vertical view of the sucked type cyclograph of radius for the utility model.

The specific embodiment

Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.

Fig. 1 can regulate the front view of the sucked type cyclograph of radius for the utility model, and Fig. 2 can regulate the vertical view of the sucked type cyclograph of radius for the utility model.Shown in Fig. 1 and 2, the described sucked type cyclograph of regulating radius comprises cyclograph body 1, one end of described cyclograph body 1 is provided with rotating shaft 2, be connected with sucker 3 in the described rotating shaft 2, have through hole 8 and scale value 5 on the described cyclograph body 1, be equipped with radius adjusting portion 4 on the described cyclograph body 1, the part that described radius adjusting portion 4 is positioned at cyclograph body 1 top has reading hole 6 and chalk fixing hole 7.

The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. the sucked type cyclograph that can regulate radius, it is characterized in that, comprise the cyclograph body, one end of described cyclograph body is provided with rotating shaft, be connected with sucker in the described rotating shaft, have through hole and scale value on the described cyclograph body, be equipped with the radius adjusting portion on the described cyclograph body, described radius regulator site has reading hole and chalk fixing hole in the part of cyclograph body top.