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a compass

A compasses and gear technology, applied in circular curve plotters, printing, writing utensils, etc., can solve problems such as easy loosening of hinges, misalignment, easy slipping of positioning pins, etc., to achieve convenient disassembly and installation, good reliability, and avoid injury human effect

Active Publication Date: 2020-01-10
周默
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In daily life, the common compasses need to use a ruler to measure the radius when drawing. Without a ruler, it has great limitations in making standard graphics. In more cases, it is impossible to make graphics. At the same time, Since the connecting part of the compass is a hinge, the hinge is easy to loosen after a long period of use of the compasses. When drawing graphics, misalignment problems often occur, and when the angle between the legs of the two compasses is relatively large, the positioning pin is not easy to fix. The positioning needle is easy to slip, which brings inconvenience to the drawing workers

Method used

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Embodiment Construction

[0016] refer to figure 1 , figure 2 , image 3 and Figure 4 , a compass of the present invention, comprising a seat body 1, a first groove 2, a driving mechanism 3, a first gear 4, a second gear 5, a first fixing mechanism 6, a second fixing mechanism 7, a reading mechanism 8, a first Leg 9, second leg 10, positioning pin 11, drawing pen 12, handle 13, second groove 14, rotating shaft 15 and turntable 16, the lower end of described seat body 1 is provided with first groove 2, so The first gear 4 and the second gear 5 are arranged in the first groove 2, the first gear 4 and the second gear 5 are meshed and connected, and the lower ends of the first gear 4 and the second gear 5 are respectively provided with a second gear. A leg 9 and a second leg 10, the lower end of the first leg 9 is provided with a first fixing mechanism 6, the first fixing mechanism 6 is provided with a drawing pen 12, the second leg 10 The lower end is provided with a second groove 14 and a rotating ...

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Abstract

The invention discloses a compass comprising a base, a first groove, a driving mechanism, a first gear, a second gear, a first fixed mechanism, a second fixed mechanism, a reading mechanism, a first support leg, a second support leg, a locating pin, a drawing pen, a handle, a second groove, a rotating shaft and a rotating disk. The lower end of the base is provided with the first groove which is internally provided with the first gear and the second gear, and the first gear and the second gear are engaged; the lower ends of the first gear and the second gear are provided with the first supportleg and the second support leg separately, and the lower end of the first support leg is provided with the first fixed mechanism which is provided with the drawing pen; and the lower end of the second support leg is provided with the second groove and the rotating shaft penetrating the second groove, and the lower end of the rotating shaft in the second groove is provided with the locating pin. Compared with the prior art, the compass disclosed by the invention has the advantages of easy use, portability and high reliability, and the phenomenon of injury by the locating pin is avoided.

Description

【Technical field】 [0001] The invention relates to the technical field of school supplies, in particular to the technical field of compasses. 【Background technique】 [0002] Compass is a tool used to draw circles and arcs, and it is one of the indispensable tools in our office and study. It is composed of two parts connected by a hinge, and the connecting part in the middle can be adjusted. In daily life, the common compasses need to use a ruler to measure the radius when drawing. Without a ruler, it has great limitations in making standard graphics. In more cases, it is impossible to make graphics. At the same time, Since the connecting part of the compass is a hinge, the hinge is easy to loosen after a long period of use of the compasses. When drawing graphics, misalignment problems often occur, and when the angle between the legs of the two compasses is relatively large, the positioning pin is not easy to fix. The positioning needle is easy to slip, which brings inconven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43L9/02B43L9/16
CPCB43L9/02B43L9/16
Inventor 周默
Owner 周默
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