CN202389046U

CN202389046U - Novel compasses

Info

Publication number: CN202389046U
Application number: CN201120434923XU
Authority: CN
Inventors: 金文印
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-07
Filing date: 2011-11-07
Publication date: 2012-08-22
Anticipated expiration: 2021-11-07

Abstract

The utility model discloses a pair of novel compasses, which comprises a base 1, a central shaft 2, a rotating rod 3, a bicolor pen 4, a stop button 5 and a buckle 6, and is characterized in that the base 1 is a disc with scales, the central shaft 2 is arranged in the middle of the disc, the upper end of the central shaft 2 is provided with the stop button 5, the middle of the central shaft 2 is connected with the rotating rod 3 with scales, and the rotating rod 3 is provided with the bicolor pen 4 capable of moving back and forth and is provided with the movable buckle 6. The pair of novel compasses has the beneficial effects of simple structure, convenience, practicability, and capabilities of drawing arcs of different radiuses and radians accurately according to learning needs and drawing marks of different colors so as to bring convenience to the learning.

Description

A kind of novel bow compass

Technical field

The utility model relates to a kind of study article, particularly a kind of novel bow compass.

Background technology

Compasses all are indispensable study articles on teaching class or geometry class; But existing compasses function is all more single; When needing divider calipers to decide the bowlder of radius, must could draw circle with the length that ruler measures regulation, also must use protractor when drawing circular arc; Also bad differentiation when needing several circles of picture or radian sometimes, these are all made troubles to the work life.

Summary of the invention

The utility model is to the deficiency of above-mentioned prior art, and a kind of novel bow compass that can accurately draw circle or radian and can distinguish with the pen of different colours is provided.

The technical scheme of this practical nova is: a kind of novel bow compass comprises disk 1, central shaft 2, bull stick 3, double-colored pen 4, catch button 5, buckle 6.It is characterized in that said base 1 is the disk of a band scale; The disk middle part is equipped with a central shaft 2, and the central shaft upper end is equipped with a catch button 5, and the central shaft middle part is connected with the bull stick 3 of band scale; Be equipped with the double-colored pen 4 that can move back and forth on the bull stick, be equipped with mobile buckle 6 on the bull stick 3.

The beneficial effect of the utility model is: simple in structure, convenient and practical, can be according to the study needs round fox of circle and different radians of different radii of accurately drawing, and can make the sign of different colours, bring convenience to study.

Description of drawings

Accompanying drawing is the structural representation of the utility model

In the accompanying drawing: 1, disk; 2, central shaft; 3, bull stick; 4, double-colored pen; 5, catch button; 6, buckle.

The specific embodiment

Shown in accompanying drawing: said disk 1 is the disk of a band scale; The disk middle part is equipped with a central shaft 2, and central shaft 2 upper ends are equipped with a catch button 5, and central shaft 2 middle parts are connected with the bull stick 3 of band scale; Be equipped with the double-colored pen 4 that can move back and forth on the bull stick 3, be equipped with mobile buckle 6 on the bull stick 3; Adopt the novel bow compass of the utility model can the disk 1 of compasses be placed on the paper; Radius according to concrete needs; Buckle 6 close to the corresponding scale value place that double-colored pen 4 is moved to bull stick 3 with the double-colored pen 4 fixing picture circles that get final product; When needing several circles of picture and needs to distinguish, distinguish with regard to the pen of available different colours.When drawing the circular arc of certain radian if desired, rotate bull stick 3 according to the scale of disk 1 and get final product, when needing several circular arcs of picture and needs to distinguish, with regard to distinguishing with different colours to suitable radian.Therefore the beneficial effect of the utility model is: simple in structure, convenient and practical, can be according to the study needs round fox of different radii and different radians of accurately drawing, and can make the sign of different colours, bring convenience to study.

More than be that a kind of specific embodiment structure that the utility model is provided has been carried out detailed introduction; Present embodiment just is used to help to understand the method for designing and the core concept of the utility model; Simultaneously; To those skilled in the art, essential identical according to the design of the thought of the utility model is all within the utility model protection domain.In sum, this description can not be interpreted as the restriction to the utility model.

Claims

1. novel bow compass; Comprise disk (1), central shaft (2), bull stick (3), double-colored pen (4), catch button (5), buckle (6), it is characterized in that said base (1) is the disk of a band scale, disk (1) middle part is equipped with a central shaft (2); Central shaft (2) upper end is equipped with a handle (5); Central shaft (2) middle part is connected with the bull stick (3) of band scale, is equipped with the double-colored pen (4) that can move back and forth on the bull stick (3), is equipped with mobile buckle (6) on the bull stick (3).