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Portable ellipsograph

An ellipse gauge, a convenient technology, applied in the field of teaching aids, can solve problems such as inaccurate drawing of the ellipse gauge, and achieve the effect of improving accuracy

Inactive Publication Date: 2019-12-13
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a convenient ellipse gauge, which can effectively solve the problem of inaccurate drawing of the existing ellipse gauge

Method used

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  • Portable ellipsograph
  • Portable ellipsograph
  • Portable ellipsograph

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] like figure 1 As shown, the convenient elliptical gauge includes a box shell 1, and a matching anchor component and a drawing component are arranged on the box shell 1.

[0034] like figure 1 As shown, an anchor assembly for fixing and positioning the device is provided at the bottom of the case 1, which includes a hollow fixed pin 2 fixed at one end of the case 1 and slidably arranged in the case 1 The moving pin 3, and the length of the moving pin 3 and the fixed pin 2 are kept the same, so that the needle points of the two can be located on the same horizontal plane; at the same time, a fixing nut for further tightening and fixing the fixed pin 2 is provided outside the box shell 1, Its fixing method is the same as that of moving pin 3.

[0035] like figure 1 and image 3 As shown, a chute 11 with a scale value is provided on the box shell 1, and there is a certain gap between the chute 11 and the fixed pin 2. The moving pins 3 are fixed together, so that the mo...

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PUM

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Abstract

The invention discloses a portable ellipsograph. The portable ellipsograph comprises a box shell, a drawing assembly and an anchoring assembly which are matched are arranged on the box shell, the anchoring assembly comprises a fixed pin and a movable pin which are arranged on the bottom of the box shell, a bunching assembly located above the fixed pin is arranged on the top of the box shell, a thread rope is arranged in the bunching assembly, the thread rope penetrates through the fixed pin to be connected with the movable pin, the drawing assembly comprises a hollow-out rod part and a drawingpin, the hollow-out rod part is rotatably arranged on the top of the box shell, one end of the drawing pin is movably connected with the hollow-out rod part, and other end of the drawing pin is connected with the thread rope between the fixed pin and the movable pin. The portable ellipsograph is convenient to use, the oval can be rapidly and accurately drawn, and the drawing precision is high.

Description

technical field [0001] The invention belongs to the technical field of teaching appliances, and in particular relates to a convenient ellipse gauge. Background technique [0002] An ellipse is a typical geometric figure with graceful shape and flexible trajectory. People often need to use ellipses in their study, work, design and creation. However, drawing an ellipse is always a challenge. At present, the commonly used methods of drawing ellipses can be divided into two categories: one is by means of the so-called "ellipse gauge", and the other is the "approximation method". [0003] And existing ellipse gauge often has the following defects due to the problem of structural setting: [0004] (1) A pencil independent of the structure is used to draw the line, and the error is large. When drawing, the line is on the paper surface, and the contact with the pen tip is not good, and there is a large friction; [0005] (2) The width of the ruler used is relatively large, the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L11/04B43L11/045
CPCB43L11/04B43L11/045
Inventor 陈天星陈熹民徐洪亮胡亚森杨玉洁袁标
Owner SOUTHWEST JIAOTONG UNIV