Compasses

A technology of compasses and operating body, which can be used in circular curve plotters, printing, writing utensils, etc., and can solve problems such as difficulty and difficulty in operation.

Active Publication Date: 2011-08-17
乐志明康(天津)文教用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when the operation part 38 rotates, it is necessary to rotate the operation part 38 between several fingers. This kind of operation is more difficult for the handicapped or schoolchildren with small palms, even for adults or healthy people. That said, it can also be a burden in situations such

Method used

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Embodiment Construction

[0023] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0024] Figure 1 to Figure 5 The compasses shown in the present embodiment. The compass of the present invention is provided with a compass main body 1 and an operating body 2 which can be freely mounted on the compass main body 1 . The compasses main body 1 is provided with the center leg 3 fixedly drawing a circle or arc center on the paper surface, is provided with the pen holder rotating pin 4 of the note-taking utensil for drawing described circle or arc and is equipped with two pins 3 / 4 The end of the center drive 5 is freely rotatable and can be opened and closed by two feet 3 / 4; the operating body 2 is freely mounted on the center drive 5. In addition, except for the cases described below, each component of the compasses is describ...

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PUM

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Abstract

The invention relates to a pair of compasses, of which two legs (3/4) are rotatably installed on a central drive unit (5) and provided with an operation body rotatable around the longitudinal axis. The pair of compasses provided in the invention enables conveniently drawing circles or arcs.

Description

technical field [0001] The present invention relates to compasses. Background technique [0002] general compasses, such as Figure 6 Shown all have the central support foot 3 that steel needle 6 is housed and the pen holder rotating foot 4 that pencil 14 is housed and the middle drive that two pin 3 / 4 free opening and closing are connected, on the middle drive, the gauge that pinches with finger is housed Head 38. And, when drawing a circle or arc (hereinafter referred to as circle, etc.), for example: Figure 6 As shown, the two pins 3 / 4 of opening can be fixed on the paper, and the gauge head 38 can be rotated with fingers. In addition, Patent Document 1 (Patent Kaiping No. 10-193877) also lists the compasses that are provided with the operating portion on the middle drive. [0003] The above-mentioned rotation of the operating portion 38 when drawing a circle or an arc is divided into 2 kinds: the one is the revolution that rotates around the steel needle 6 fixed on th...

Claims

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Application Information

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IPC IPC(8): B43L9/02
Inventor 佐佐木正明
Owner 乐志明康(天津)文教用品有限公司
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