JPH07309098A - Simple compass - Google Patents

Simple compass

Info

Publication number
JPH07309098A
JPH07309098A JP13776994A JP13776994A JPH07309098A JP H07309098 A JPH07309098 A JP H07309098A JP 13776994 A JP13776994 A JP 13776994A JP 13776994 A JP13776994 A JP 13776994A JP H07309098 A JPH07309098 A JP H07309098A
Authority
JP
Japan
Prior art keywords
ring
circle
around
wheel
piling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13776994A
Other languages
Japanese (ja)
Inventor
Takeshi Inoue
健 井上
Original Assignee
Takeshi Inoue
健 井上
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takeshi Inoue, 健 井上 filed Critical Takeshi Inoue
Priority to JP13776994A priority Critical patent/JPH07309098A/en
Publication of JPH07309098A publication Critical patent/JPH07309098A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To distinguish a circle in writing simply and safely by a method wherein a compass in which a doubly structured ring shifted into upper and lower halves is connected by piling with a magnet, an annular magnet is arranged outside the ring, an annular metal part is arranged inside, the rings which grow larger respectively by one ring with the same form around the ring are lastly connected to each other by piling. CONSTITUTION:An annular magnet 4 is arranged outside a ring 1 and a ring 2, and an annular metal part 5 is arranged inside the ring 2 and a ring 3. Then, a numerical value of a diameter of an inner circle is written on a surface of each ring, and a numerical value of a diameter of an outer circle is written on its rear face. Further, a graduation of an angle is notched on both faces. The ring 2 around the ring 1, rings which grow larger respectively by one ring with the same form as the ring 2 around the ring 2, and lastly the ring 3 are connected to each other by piling. When those are used, the inner circle or the outer circle of each ring represented by the ring 1, the ring 2, and the ring 3 is traced with a lead pencil or the like. Further, a bisector of the circle is drawn by using the graduation of the angle on the front and rear faces of each ring, and a center of the circle is determined by obtaining its intermediate point.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】この発明は、上下半分にづれた二
重構造の輪を幾重にも磁石で重ねつないだコンパスに関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compass in which a double-structured ring, which is divided into upper and lower halves, is superposed by magnets.
【0002】[0002]
【従来の技術】従来、二又コンパスや円が徐々に大きく
なりながら横に並ぶ定規があった。
2. Description of the Related Art Conventionally, there has been a ruler in which a bifurcated compass and a circle are arranged side by side while gradually increasing in size.
【0003】[0003]
【発明が解決しようとする課題】これは次のような欠点
があった。 (イ) 二又コンパスは針があり、取扱いに注意しなけ
ればならなかった。 (ロ) 円を横に並べた定規は、必要以上に大きなもの
であった。 本発明は、これらの欠点を除くためになされたものであ
る。
However, this has the following drawbacks. (B) The bifurcated compass had a needle, and had to be handled with care. (B) The ruler with the circles arranged side by side was larger than necessary. The present invention has been made to eliminate these drawbacks.
【0004】[0004]
【課題を解決するための手段】輪(1)・輪(2)の外
側に環状磁石(4)を、輪(2)・輪(3)の内側に環
状金属部品(5)を仕組み、(1)の回りに(2)を、
(2)の回りに(2)と同型で一回りずつ大きくなる輪
々を、そして最後に(3)を重ねつなぐ。本発明は、以
上のような構成によりなるコンパスである。
[Means for Solving the Problems] A ring magnet (4) is arranged outside the ring (1) / ring (2), and a ring metal part (5) is arranged inside the ring (2) / ring (3). (2) around 1),
Connect (2) the same shape as (2), which grows one by one, and finally (3). The present invention is a compass having the above configuration.
【0005】[0005]
【作用】輪(1)・輪(2)・輪(3)を代表とする各
輪の内円または外円を鉛筆等でなぞる。
[Function] The inner circle or the outer circle of each of the rings (1), (2), and (3) is traced with a pencil or the like.
【0006】[0006]
【実用例】以下、本発明の実用例について説明する。 (イ) 輪(1)・輪(2)の外側に環状磁石(4)
を、輪(2)・輪(3)の内側に環状金属部品(5)を
仕組む。 (ロ) 各輪の表面に内円の直径数値を、裏面に外円の
直径数値を書き込み、また、両面に角度の目盛を刻む。 (ハ) 輪(1)の回りに輪(2)を、輪(2)の回り
に(2)と同型で一回りずつ大きくなる輪々を、そして
最後に輪(3)を重ねつなぐ。 本発明は以上のような構造で、これを使用するときは、
輪(1)・輪(2)・輪(3)を代表とする各輪の内円
または外円を鉛筆等でなぞる。なお、各輪の表裏にある
角度の目盛を利用して円の二分線を引き、その中間点を
求めると円の中心が分かる。
[Practical example] A practical example of the present invention will be described below. (A) Ring magnet (4) on the outside of the wheel (1) / wheel (2)
The ring metal parts (5) are assembled inside the rings (2) and (3). (B) Write the diameter value of the inner circle on the front surface of each ring and the diameter value of the outer circle on the back surface, and engrave the angle scale on both surfaces. (C) Connect the wheel (2) around the wheel (1), the wheels of the same shape as the wheel (2) that grows one by one, and finally the wheel (3). The present invention has the above-mentioned structure, and when it is used,
Trace the inner or outer circle of each ring, which is represented by the ring (1), the ring (2), and the ring (3), with a pencil or the like. The center of the circle can be found by drawing the bisector of the circle using the angle scales on the front and back of each wheel and finding the midpoint.
【0007】[0007]
【発明の効果】大小の輪を重ねることによって必要以上
に大きくならない。また、各輪を上下半分にづれた二重
構造にしてその両面を使用することで、輪の幅を太く保
ちながら、単なる輪を重ねた場合と同じ大きさの大小の
円を描き分けられる。しかも隣輪とは磁石によってつな
げている為、極めて簡単安全に取扱いできる。
[Effects of the Invention] By stacking large and small rings, the size does not become larger than necessary. Also, by using a double structure in which each wheel is divided into upper and lower halves, and using both sides of it, it is possible to draw large and small circles of the same size as when simply overlapping the wheels while keeping the width of the wheels wide. Moreover, since it is connected to the adjacent wheels by a magnet, it can be handled extremely easily and safely.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の表面図である。FIG. 1 is a surface view of the present invention.
【図2】本発明の裏面図である。FIG. 2 is a back view of the present invention.
【図3】輪(2)の表面図である。FIG. 3 is a front view of the wheel (2).
【図4】輪(2)の裏面図である。FIG. 4 is a rear view of the wheel (2).
【図5】本発明の要部断面図である。FIG. 5 is a sectional view of an essential part of the present invention.
【図6】本発明の要部断面図である。FIG. 6 is a cross-sectional view of an essential part of the present invention.
【図7】輪(1)の裏面図である。FIG. 7 is a rear view of the wheel (1).
【図8】輪(3)の表面図である。FIG. 8 is a front view of the wheel (3).
【符号の説明】[Explanation of symbols]
1 輪 2 輪 3 輪 4 環状磁石 5 環状金属部品 1 wheel 2 wheels 3 wheels 4 ring magnets 5 ring metal parts

Claims (1)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 輪(1)・輪(2)の外側に環状磁石
    (4)を、輪(2)・輪(3)の内側に環状金属部品
    (5)を仕組み、(1)の回りに(2)を、(2)の回
    りに(2)と同型で一回りずつ大きくなる輪々を、そし
    て最後に(3)を重ねつないだコンパス。
    1. A ring magnet (4) is arranged outside the ring (1) / ring (2), and a ring-shaped metal part (5) is arranged inside the ring (2) / ring (3). A compass with (2), (2), a circle of the same shape as (2) that grows one by one, and finally (3).
JP13776994A 1994-05-16 1994-05-16 Simple compass Pending JPH07309098A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13776994A JPH07309098A (en) 1994-05-16 1994-05-16 Simple compass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13776994A JPH07309098A (en) 1994-05-16 1994-05-16 Simple compass

Publications (1)

Publication Number Publication Date
JPH07309098A true JPH07309098A (en) 1995-11-28

Family

ID=15206407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13776994A Pending JPH07309098A (en) 1994-05-16 1994-05-16 Simple compass

Country Status (1)

Country Link
JP (1) JPH07309098A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107487115A (en) * 2017-08-21 2017-12-19 王仁锋 A kind of cyclograph

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107487115A (en) * 2017-08-21 2017-12-19 王仁锋 A kind of cyclograph
CN107487115B (en) * 2017-08-21 2019-01-29 王仁锋 A kind of cyclograph

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