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Compass for students

A technology for compasses and students, which is applied in the field of school supplies and compasses for students. It can solve problems such as inability to make graphics, displacement of two outriggers, easy loosening of hinges, etc., to achieve convenient retraction, convenient extension adjustment, and avoid lead cores broken effect

Active Publication Date: 2019-08-06
王嘉瑜
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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 making a drawing. Without a ruler, there are great limitations in making standard graphics. In more cases, it is impossible to make graphics
[0005] At the same time, since the connection part of the compasses is a hinge, the hinge is easy to loosen after the compass is used for a long time. When drawing graphics, the problem of displacement of the two outriggers often occurs, resulting in poor reliability.
[0006] Existing compass positioning pins are generally exposed, so when the compasses are not in use, it is inevitable that they will be accidentally stabbed by the positioning pins

Method used

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  • Compass for students
  • Compass for students
  • Compass for students

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Embodiment Construction

[0026] refer to figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 , a compass for students of the present invention, comprising a seat body 1, a lead fixing mechanism 2, a groove 3, a shaft body 4, a first connection seat 5, a second connection seat 6, an elastic pad 7, a fastening nut 8, a blocking Body 9, first leg 10, second leg 11, blind hole 12, slotted hole 13, positioning groove 14, spring body 15, positioning body 16, handle 17, pushing body 18, guide groove 19, protrusion 110 and Positioning pin 111, the upper end of the base body 1 is provided with a handle 17, the lower end of the base body 1 is provided with a groove 3, the groove 3 is provided with a shaft body 4, and the shaft body 4 is arranged from front to Afterwards, the first connection seat 5, the second connection seat 6 and the elastic pad 7 are set sequentially. The shaft body 4 is provided with a blocking body 9 on the outside of the first connection seat 5, and the shaft body 4 is provided ...

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Abstract

The invention discloses a compass for students. The compass comprises a seat body, a pencil lead fixing mechanism, a groove, a shaft body, a first connecting seat, a second connecting seat, an elasticcushion, a fastening nut, a blocking body, a first support leg, a second support leg, a blind hole, a slotted hole, a positioning groove, a spring body, a positioning body, a handle, a pushing body,a guide groove, a bulge and a positioning pin, wherein the handle is arranged on the upper end of the seat body, the groove is formed in the lower end of the seat body, the shaft body is arranged in the groove, the first connecting seat, the second connecting seat and the elastic cushion sleeve the shaft body in sequence from front to back, the blocking body is arranged on the shaft body on the outer side of the first connecting seat, the fastening nut which is in threaded connection and is located on the outer side of the elastic cushion is arranged on the shaft body, the first support leg and the second support leg are respectively arranged on the lower ends of the first connecting seat and the second connecting seat, and the blind hole is formed in the lower end of the second support leg. Compared with the prior art, the reliability is high, and the puncture caused by the positioning pin when the compass is not used is avoided.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of school supplies, in particular to the technical field of a compass for students. [0003] 【Background technique】 [0004] 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 compass needs to use a ruler to measure the radius. Without a ruler, it has great limitations in making standard graphics, and in more cases, it is impossible to make graphics. [0005] Simultaneously, because the connecting part of the compass is a hinge, after the compass is used for a long time, the hinge is easy to loosen. When drawing graphics, the problem of displacement of the two legs often occurs, thus the reliability is poor. [0006] The existing compasses positioning pins are generally exposed design, so when the compasses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L9/02B43L9/16B43L9/24
CPCB43L9/02B43L9/16B43L9/24
Inventor 王嘉瑜
Owner 王嘉瑜
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