Napier's compasses

A compass and wire rope technology, which is applied in the field of multi-purpose compasses, can solve the problems of complicated procedures, errors, and can only draw ellipses, etc., and achieves the effect of being convenient to carry and high precision.

Active Publication Date: 2015-04-22
SUZHOU VOCATIONAL UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current compasses can only draw circles or ellipses. The methods used to draw ellipses generally include drawing ellipses using templates and combining compass and ruler to draw ellipses. Drawing an ellipse, the program is too complicated, and there are errors in connecting points manually
The existing adjustable ellipse compasses, application number 201110020178.9, this kind of compass is complicated to debug, can only draw ellipses, and needs to be able to slide out ellipses on the blackboard during the teaching process, the existing ellipse compasses cannot meet this requirement

Method used

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Embodiment Construction

[0026] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0027] see Figure 1 to Figure 10 , the embodiment of the present invention includes:

[0028] A multi-purpose compasses, comprising: a telescopic adjustment mechanism and a pen holder fixing mechanism; the telescopic adjustment mechanism includes a rotation locking mechanism, a slide adjustment focal length mechanism and a wire rope locking mechanism; the sliding adjustment focal length mechanism is slidably arranged on the on the rotation locking mechanism; the string locking mechanism is fixed on the rotation locking mechanism; the clip fixing mechanism is connected to the string locking mechanism.

[0029] The rotation locking mechanism ...

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Abstract

The invention discloses a pair of napier's compasses. The pair of napier's compasses comprises a telescopic adjusting mechanism and a pencil clamp fixing mechanism. The telescopic adjusting mechanism comprises a rotating locking mechanism, a sliding focal length adjusting mechanism and a thread rope locking mechanism, wherein the sliding focal length adjusting mechanism is arranged on the rotating locking mechanism in a sliding mode, the thread rope locking mechanism is fixed on the rotating locking mechanism, and the pencil clamp fixing mechanism is connected to the thread rope locking mechanism. In this way, a continuous curve can be rapidly and accurately drawn up at one time through the pair of napier's compasses, circles and ellipses can be drawn, and multiple purposes of the pair of napier's compasses are achieved; due to the fact that gear drive is adopted, stability and reliability are achieved, and accuracy is high; due to the fact that magnets at the bottom end can attract on a blackboard, labor is saved in the drawing process, drawing can be rapidly conducted, and the pair of napier's compasses is convenient to carry.

Description

technical field [0001] The invention relates to the field of compasses, in particular to a multipurpose compass capable of drawing circles and ellipses. Background technique [0002] The current compasses can only draw circles or ellipses. The methods used to draw ellipses generally include drawing ellipses using templates and combining compass and ruler to draw ellipses. The procedure for drawing an ellipse is too complicated, and there are errors in manually connecting lines between points. The existing adjustable ellipse compasses, application number 201110020178.9, are complex to debug and can only draw ellipses, and need to be able to slide out ellipses on the blackboard during the teaching process. The existing ellipse compasses cannot meet this requirement. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a multi-purpose compass capable of drawing circles with arbitrary diameters and elliptical figures wi...

Claims

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Application Information

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IPC IPC(8): B43L9/02B43L11/05
CPCB43L9/02B43L11/05
Inventor 李振兴卞祥胡星星王佳
Owner SUZHOU VOCATIONAL UNIV
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