JP3207538U - Colored transparent triangle ruler with protractor - Google Patents
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Abstract
【課題】三角定規に分度器機能を付け、扱いやすく、楽しく学習することができる三角定規を提供する。【解決手段】二等辺直角三角形１１の直角の対辺に寸法目盛１３を入れ、３つの内角が３０−６０−９０°の直角三角形１２の６０°の対辺に寸法目盛１３を入れた２枚の定規を有する三角定規において、二等辺直角三角形１１の定規の内部には、直角方向を頂点とする半円状の溝１４を内設し、半円状の中心から角度目盛を付けて、分度器２を設けた。【選択図】図４PROBLEM TO BE SOLVED: To provide a triangle ruler with a protractor function attached to a triangle ruler, which is easy to handle and can be enjoyed by learning. Two rulers in which a dimensional scale 13 is placed on the opposite side of a right angle of an isosceles right triangle 11 and a dimensional scale 13 is placed on the opposite side of a right triangle 12 having three internal angles of 30-60-90 °. A semicircular groove 14 having an apex in the perpendicular direction is provided inside the ruler of the isosceles right triangle 11, and an angle scale is attached from the semicircular center, and the protractor 2 is Provided. [Selection] Figure 4
Description
本考案は、二枚のそれぞれに異なる色がついている有色透明の三角定規であって、二等辺直角三角形の定規には分度器が内設されている分度器付有色透明三角定規に関する。 The present invention relates to a colored transparent triangular ruler with two different colors, and a protractor-equipped colored transparent triangular ruler in which a protractor is provided in an isosceles right triangle ruler.
小中学校の教材の中で、三角定規や分度器はよく使用されている。三角定規は、図１のように二等辺直角三角形の定規と3角が30-60-90°の直角三角形（以下30-60直角三角形とする)の定規(以下、定規を省く)の2枚から構成されている。この2枚を合わせて三角定規とする。二等辺直角三角形では直角の対辺に、30°-60°直角三角形では60°角の対辺に寸法線が刻まれ、この対辺の長さを同じにしている。分度器も馴染の深いものであるが図２にその例を挙げておく。
三角定規セット及び分度器は教材として同時に使用される場合も多い。この時、分度器が三角定規の中に内設され、使用できれば分度器を用意する必要がなく、机から落としたり、見失う場合もない。また、2枚の三角定規をそれぞれ異なる色にできれば子供たちが選択する楽しみの一つとなるし、2枚が重なることで、重なる部分の色が変化すれば、後述するように三角定規の扱い方に慣れるようになる。
そこで、本考案者は、2枚の三角定規を色が異なる有色透明とし、二等辺直角三角形の内部に半円形の溝を掘り、その中心部から角度目盛を刻むことにより、溝部から用紙に印をつけることができる分度器付有色透明三角定規を考案した。
Triangular rulers and protractors are often used in elementary and junior high school materials. As shown in Fig. 1, there are two triangle rulers: an isosceles right-angled triangle ruler and a 30-60-90 ° right-angled triangle (hereinafter referred to as 30-60 right-angled triangle) ruler (hereinafter, ruler is omitted). It is composed of Combine these two to make a triangle ruler. In the isosceles right triangle, a dimension line is engraved on the opposite side of the right angle, and in the 30 ° -60 ° right triangle, the opposite side of the 60 ° angle is engraved with the same length. The protractor is also familiar, but an example is given in FIG.
Triangular ruler sets and protractors are often used simultaneously as teaching materials. At this time, the protractor is installed in the triangle ruler, and if it can be used, there is no need to prepare the protractor, and there is no possibility of dropping from the desk or losing sight. Also, if the two triangle rulers can be made different colors, it will be one of the pleasures that children will choose, and if the colors of the overlapping parts change due to the two overlapping, how to handle the triangle ruler as described later Get used to.
Therefore, the present inventor made two triangular rulers of different colors and transparent, dug a semicircular groove inside the isosceles right triangle, and carved an angle scale from the center to mark the paper from the groove. I devised a colored transparent triangle ruler with a protractor.
分度器付の三角定規としては、以下のような先行技術がある。三角定規の中に分度器の機能を備え一体化させたものであり、30°-60°直角三角形の直角部を半円の一方の起点とし斜辺に接するように半円を描き半円の中心部から３０°ごとに角度目盛を付けた発明(特許文献１)、
三角定規の表面に分度器の中心点と、該中心点を通り前記三角定規の一辺と平行な分度器の基準線と、該基準線と向き合う前記三角定規の辺上に一端を置いた分度器の角度目盛りが描かれていることを特徴とする分度器兼用の三角定規(特許文献２)、
三角定規の表面に分度器の中心点と、該中心点を通り前記三角定規の一辺と平行な分度器の基準線と、該基準線と向き合う前記三角定規の辺上に一端を置いた分度器の角度目盛りが描かれていることを特徴とする分度器兼用の三角定規(特許文献３)、等がある
As a triangle ruler with a protractor, there are the following prior arts. A triangle ruler is integrated with a protractor function, and a 30 ° -60 ° right triangle of the right triangle is drawn from one side of the semicircle and a semicircle is drawn so that it touches the hypotenuse. Invention with an angle scale every 30 ° (Patent Document 1),
A protractor center point on the surface of the triangle ruler, a reference line of the protractor passing through the center point and parallel to one side of the triangle ruler, and an angle scale of the protractor with one end placed on the side of the triangle ruler facing the reference line A triangle ruler that also serves as a protractor (Patent Document 2),
A protractor center point on the surface of the triangle ruler, a reference line of the protractor passing through the center point and parallel to one side of the triangle ruler, and an angle scale of the protractor with one end placed on the side of the triangle ruler facing the reference line There is a trigonometric ruler (Patent Document 3) that also serves as a protractor characterized by
上記いずれの先行技術も三角定規の中に分度器の機能を有するものであるが、本願のように、二等辺直角三角形の中に半円形の溝を掘り、分度器目盛を付けたものではなく、2枚の三角定規を色が異なる有色透明としたものではない。 Any of the above prior arts has the function of a protractor in a triangle ruler, but as in the present application, a semicircular groove is dug in an isosceles right triangle and a protractor scale is not attached. The triangle ruler is not made transparent with different colors.
本考案の課題は、三角定規の内の二等辺直角三角形の定規に分度器機能を付け、二等辺直角三角形内に掘られた半円状の溝を通し鉛筆等により印をつけることができ、更に２枚の三角定規を色が異なる有色透明とし、扱いやすく、楽しく学習することを目的とする。 The problem of the present invention is that a protractor function is attached to a ruler of an isosceles right triangle in the triangle ruler, and a semicircular groove dug in the isosceles right triangle can be marked with a pencil, etc. The purpose of this study is to make the two triangular rulers differently colored and transparent, easy to handle and fun to learn.
すなわち、第１考案は、二等辺直角三角形の直角の対辺に寸法目盛、3つの内角が30−60−90°の直角三角形の６０°の対辺に寸法目盛を入れた2枚の定規を有する三角定規において、二等辺直角三角形の定規の内部には、直角方向を頂点とする半円状の溝を内設し、半円状の中心から角度目盛を付けて、分度器を設けた分度器付三角定規である。 In other words, the first device is a triangle having two rulers with a dimensional scale on the opposite side of an isosceles right triangle and a three-sided ruler with a graduated scale on the opposite side of 60 ° of a right triangle with three interior angles of 30-60-90 °. A ruler with a protractor with a protractor provided with a semicircular groove inside the ruler of an isosceles right triangle and an angle scale from the center of the semicircle. It is.
二等辺直角三角形の直角の対辺に寸法目盛、3つの内角が30−60−90°の直角三角形の６０°の対辺に寸法目盛を入れた2枚の定規を合わせて三角定規とする。この三角定規の内、二等辺直角三角形の定規(以下、定規を省く)内に分度器を内設するものである。二等辺直角三角形内に分度器を内設するのは、二等辺直角三角形は直角を頂点として左右対称であり、その内部に比較的大きな半円状の溝を掘ることができるためである。
半円状の溝は同心円状に掘られ、その中心部から角度目盛が刻まれている。半円状の中心は、直角の対辺の寸法目盛の中心の垂線上に一致するように半円状の溝は掘られる。
Two rulers with a dimensional scale on the opposite side of a right-angled isosceles triangle and three rulers with a graduated scale on the opposite side of a 60 ° right angle triangle with three internal angles of 30-60-90 ° are combined into a triangle ruler. Within this triangle ruler, a protractor is installed in an isosceles right triangle ruler (hereinafter, ruler is omitted). The reason why the protractor is provided in the isosceles right-angled triangle is that the isosceles right-angled triangle is symmetric with respect to a right angle as a vertex, and a relatively large semicircular groove can be dug inside.
The semicircular groove is dug concentrically, and an angular scale is carved from its center. The semi-circular groove is dug so that the semi-circular center coincides with the perpendicular of the center of the right-side opposite dimension scale.
続いて、第2考案は、二等辺直角三角形及び30−60−90°の直角三角形の2枚の定規を互いに色の異なる有色透明とした第１考案の分度器付三角定規である。 Subsequently, the second device is a trigonometric ruler with a protractor of the first device in which two isosceles right triangles and 30-60-90 ° right triangles are colored and transparent with different colors.
一般的には、三角定規は無色透明のプラスチック材料で作られている。二等辺直角三角形及び30−60−90°の直角三角形の2枚の定規を互いに色の異なる有色透明とし、子供たちに選択の幅を広げ、2枚の定規を重ねた部分はさらに異なる有色透明を呈することになり、楽しく学習することにもなる。 Generally, the triangle ruler is made of a colorless and transparent plastic material. The two rulers of the isosceles right triangle and the 30-60-90 ° right triangle are colored and transparent with different colors, expanding the range of choice for children, and the overlapping parts of the two rulers are further colored and transparent Will be a fun learning experience.
続いて第３考案は、二等辺直角三角形及び30−60−90°の直角三角形の2枚の定規の寸法線の目盛部分の断面肉厚を他の部分より薄くした第１考案又は第２考案の分度器付三角定規である。 Subsequently, the third device is the first device or the second device in which the cross-sectional thickness of the scale portion of the dimension line of the two rulers of the isosceles right triangle and the 30-60-90 ° right triangle is thinner than the other parts. This is a triangular ruler with a protractor.
前述のように、三角定規は、二等辺直角三角形では直角の対辺に、30°-60°直角三角形では60°角の対辺に寸法線が刻まれ、この対辺の長さを同じにしている。
この寸法線の断面を用い長さを測ったり、線を引いている。この寸法線の断面が厚い場合、鉛筆等で線を引きにくい。また寸法線が他の面と同じ高さの場合、寸法線が摩擦等に消失する恐れもある。そこで、寸法線の刻まれている箇所の断面は、他の箇所より肉厚を薄くするものである。
As described above, in the triangle ruler, dimension lines are engraved on opposite sides of a right angle in an isosceles right triangle, and on the opposite side of a 60 ° angle in a 30 ° -60 ° right triangle, and the opposite sides have the same length.
The length is measured using the cross section of this dimension line, or a line is drawn. When the cross section of this dimension line is thick, it is difficult to draw a line with a pencil or the like. Further, when the dimension line is the same height as the other surface, the dimension line may be lost due to friction or the like. Therefore, the cross section of the portion where the dimension line is engraved is thinner than the other portions.
本考案の分度器付有色透明三角定規は、分度器が二等辺直角三角形に内設されているため、単独での分度器を必要としない。また、二等辺直角三角形及び30−60−90°の直角三角形の2枚の定規を互いに色の異なる有色透明としているため、色彩の自由な選択や楽しく学習することができる。また、三角定規の寸法線の断面が違うため、表裏を認識できる。 The colored transparent triangle ruler with a protractor according to the present invention does not require a single protractor because the protractor is installed in an isosceles right triangle. In addition, since the two rulers of an isosceles right triangle and a 30-60-90 ° right triangle are colored and transparent with different colors, it is possible to freely select and enjoy learning colors. In addition, because the cross section of the dimension line of the triangle ruler is different, the front and back can be recognized.
本考案の実施例を以下に示す。 Examples of the present invention are shown below.
図３は、二等辺直角三角形１１内に分度器２を内設した定規の６面図である（Ａ平面図、Ｂ底面図、Ｃ正面図、Ｄ右側面図）。但し背面図と左側面図は省いている。
二等辺直角三角形１１の直角の対辺に寸法目盛１３が刻まれている。その断面はＢの底面図に示すように肉厚を薄くしている。二等辺直角三角形１１の内部には、同心円となっている半円状の溝１４が開けられ、その同心円の中心から角度目盛２１が１°毎刻まれ、分度器２となっている。半円状の溝１４を通し紙面上に鉛筆等で印を付けることができる。
FIG. 3 is a six-side view of a ruler in which the protractor 2 is installed in the isosceles right triangle 11 (A plan view, B bottom view, C front view, D right side view). However, the rear view and left side view are omitted.
A dimension scale 13 is engraved on the opposite side of the isosceles right triangle 11 at right angles. The cross section is made thinner as shown in the bottom view of B. Inside the isosceles right-angled triangle 11, a semicircular groove 14 which is a concentric circle is opened, and an angular scale 21 is cut every 1 ° from the center of the concentric circle to form a protractor 2. It is possible to mark the paper surface with a pencil or the like through the semicircular groove 14.
図４は、異なる色の２枚の三角定規の一部を重ねたときの状態図の例である。
２枚の各定規は色が異なる有色透明のため、重なり部分３はこの２枚の定規とは異なる色を呈することとなる。図４の(1)、(2)において、∠A、∠Bの角度がそれぞれ何度になるかを先生が教えたり、生徒が知りたい場合、重なり部分３は、２枚の各定規とは異なる色となり、識別しやすくなり、授業や勉強の補助となる。
FIG. 4 is an example of a state diagram when a part of two triangular rulers of different colors are overlapped.
Since each of the two rulers is colored and transparent with different colors, the overlapping portion 3 exhibits a color different from those of the two rules. In (1) and (2) in Fig. 4, if the teacher teaches how many angles of ∠A and ∠B are, or if the student wants to know, the overlapping part 3 is the two rulers. Different colors make it easier to identify and aid in teaching and study.
二等辺直角三角形に分度器が内接された三角定規であり、２枚の定規が色の異なる有色透明となっている。単独の分度器は不要であり、好みの色彩の定規を選択し、三角定規の扱い方も習得でるため、需要が期待される。 A triangle ruler in which a protractor is inscribed in an isosceles right triangle, the two rulers are colored and transparent with different colors. There is no need for a single protractor, and you can select a ruler of your favorite color and learn how to use a triangle ruler.
１ 三角定規 １１ 二等辺直角三角形
１２ 30-60-90°直角三角形 １３ 寸法目盛 １４ 半円状の溝
２ 分度器 ２１ 角度目盛
３ ２枚の定規が重なる部分
1 Triangular ruler 11 Isosceles right triangle
12 30-60-90 ° right triangle 13 Dimensional scale 14 Semicircular groove 2 Protractor 21 Angle scale 3 Part where two rulers overlap
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