JPH0731137Y2 - Balance teaching material - Google Patents

Description

【考案の詳細な説明】[Detailed description of the device]

【０００１】[0001]

【産業上の利用分野】本考案は低学年例えば小学４年生
位の生徒が使用する天秤教材に関する。BACKGROUND OF THE INVENTION The present invention relates to a balance teaching material used by students in lower grades, for example, in the fourth grade of elementary school.

【０００２】[0002]

【従来の技術】従来、机上に設置可能な秤台と、上端に
支点受を有し前記秤台上に突出する支柱と、この支柱の
上端支点受に揺動可能に支承される中間支点を有し両端
に左右一対の秤皿がバランスをとって吊持される秤杆
と、前記秤皿に載置される適当数の分銅とを具備する天
秤教材は知られている。2. Description of the Related Art Conventionally, a balance stand that can be installed on a desk, a support having a fulcrum support at the upper end and protruding above the balance support, and an intermediate support that is swingably supported by the upper support support of the support are provided. A balance teaching material is known that includes a balance rod having a pair of left and right balance pans hung on both ends in a balanced manner, and an appropriate number of weights placed on the balance pan.

【０００３】[0003]

【考案が解決しようとする課題】前記従来の天秤教材
は、一方の秤皿に被測定物を載せ、他方の秤皿に分銅を
載せて被測定物の重量を計るという使い方と、両方の秤
皿に適宜の物体を載せて釣り合いの実験を行うという使
い方の２通りにしか使えないものであった。The above-mentioned conventional teaching material for balance is used for weighing an object to be measured by placing the object to be measured on one of the weighing pans and placing a weight on the other weighing pan. It could only be used in two ways: using an appropriate object on a plate and conducting a balance experiment.

【０００４】この考案の目的は、前記従来の天秤として
の使い方の他に、前記秤台を可動の載物台として任意の
高さ位置に上げ、この可動載物台の円形凹所に小鋼球を
収納し、且つ前記載物台の上面外周部に複数個のバラン
ス体を適宜の配置間隔で位置決め載置して、揺動バラン
スの実験を行うことができる天秤教材を提供することに
ある。The object of the present invention is to use the balance table as a movable stage in addition to the conventional use as a balance, to raise it to an arbitrary height position, and to place a small steel in a circular recess of the movable stage. An object of the present invention is to provide a balance teaching material in which a sphere is housed and a plurality of balance bodies are positioned and mounted on the outer peripheral portion of the upper surface of the above-described object stand at appropriate arrangement intervals so that a swing balance experiment can be conducted. .

【０００５】[0005]

【課題を解決するための手段】前記の目的を達成するた
めに、本考案の天秤教材は机上に設置可能な秤台と、上
端に支点受を有し前記秤台上に突出する支柱と、この支
柱の上端支点受に揺動可能に支承される中間支点を有し
両端に左右一対の秤皿がバランスをとって吊持される秤
杆と、前記秤皿に載置される適当数の分銅とを具備する
ものにおいて、前記秤台を支柱に対して摩擦係合する中
心孔を有し前記支柱に対し任意の高さ位置に上げ下げで
きる円形中空状の可動載物台として形成し、この載物台
の上面中央部に小鋼球を転動可能に収納する円形凹所を
設け、前記載物台の上面外周部に所定個数の突起を円周
方向に等配して突設し、この任意の突起位置に複数個の
バランス体を位置決めして載置できるようにしたこと、
前記支柱の下端部に下方へ凸湾曲した球面部を有し前記
載物台の内部に格納可能な大きさのバランス台を固定し
たことを特徴とする。In order to achieve the above-mentioned object, a balance teaching material of the present invention comprises a balance stand that can be installed on a desk, and a support column having a fulcrum support at the upper end and projecting onto the balance stand. A balance rod having an intermediate fulcrum oscillatably supported by an upper fulcrum support of the column and having a pair of left and right weighing pans suspended in balance at both ends, and an appropriate number of weights placed on the weighing pan. And a circular hollow movable mount which has a central hole for frictionally engaging with the support column and which can be raised and lowered to an arbitrary height position with respect to the support column. A circular recess for rotatably storing small steel balls is provided in the center of the upper surface of the pedestal, and a predetermined number of projections are equally arranged in the circumferential direction on the outer peripheral surface of the upper surface of the above-mentioned pedestal. A plurality of balance bodies can be positioned and placed at arbitrary protrusion positions,
It is characterized in that a balance table having a spherical surface which is convexly curved downward is provided at a lower end portion of the support column and has a size capable of being stored inside the article table.

【０００６】[0006]

【作用】前記構成の天秤教材によれば、前記秤台（可動
載物台）を机上面に接床する最下位置に下げた状態にす
ることにより、一方の秤皿に被測定物を載せ、他方の秤
皿に分銅を載せて被測定物の重量を計ったり、両方の秤
皿に適宜の物体を載せて釣り合いの実験を行ったりする
ことができる。According to the balance teaching material having the above structure, the object to be measured is placed on one of the weighing pans by lowering the weighing table (movable table) to the lowest position in contact with the desk surface. A weight can be placed on the other weighing pan to weigh the object to be measured, or an appropriate object can be placed on both weighing pans to perform a balance experiment.

【０００７】また、前記秤台（可動載物台）を支柱に沿
って任意の高さ位置に上げ、前記バランス台の球面部が
机上面に揺動可能に接床する状態にすれば、この載物台
の円形凹所に小鋼球を収納し、且つ前記載物台の上面外
周部に複数個のバランス体を適宜の配置間隔で位置決め
載置して、揺動バランスの実験を行うことができる。If the balance table (movable table) is raised to a desired height along the support column and the spherical surface of the balance table is brought into rockable contact with the upper surface of the desk, A small steel ball is stored in the circular recess of the stage, and a plurality of balance bodies are positioned and placed on the outer peripheral portion of the upper surface of the stage at appropriate intervals to perform a swing balance experiment. You can

【０００８】[0008]

【実施例】以下、本考案の一実施例を図面に従い説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

【０００９】図中１は机上に設置可能な合成樹脂製の秤
台で、この秤台１は支柱７に対して摩擦係合する中心孔
２を有し前記支柱７に対し任意の高さ位置に上げ下げで
きる円形中空状の可動載物台１′として形成され、この
可動載物台１′の上面中央部に小鋼球３を転動可能に収
納する円形凹所４を設け、前記載物台１′の上面外周部
に所定個数例えば１２個の突起５を円周方向に等配して
突設し、この任意の突起位置に突起遊合孔を有する複数
個のバランス体６を位置決めして載置できるようになっ
ている。In FIG. 1, reference numeral 1 denotes a synthetic resin weighing platform that can be installed on a desk. The weighing platform 1 has a central hole 2 that frictionally engages with a supporting column 7 and has an arbitrary height position with respect to the supporting column 7. It is formed as a circular hollow movable stage 1'that can be raised and lowered, and a circular recess 4 for rollingly accommodating a small steel ball 3 is provided at the center of the upper surface of the movable stage 1 '. A predetermined number of, for example, twelve protrusions 5 are provided on the outer peripheral portion of the upper surface of the base 1 ′ so as to be equally distributed in the circumferential direction, and a plurality of balance bodies 6 having protrusion engagement holes are positioned at arbitrary protrusion positions. It can be placed by placing.

【００１０】前記支柱７は可動載物台１′の中心孔２に
摩擦係合する十字形断面の棒材で形成され、その上端に
はＶ形凹部８と指針突起９を有する支点受１０が嵌着さ
れている。The column 7 is formed of a rod member having a cross-shaped cross section which frictionally engages with the center hole 2 of the movable stage 1 ', and a fulcrum bridge 10 having a V-shaped recess 8 and a pointer projection 9 is provided at the upper end thereof. It is fitted.

【００１１】１１は前記支柱７の上端支点受１０に揺動
可能に支承される三角形状の中間支点１２を有した合成
樹脂製の秤杆で、この秤杆１１の中間支点１２上に位置
する部分には秤杆１１のバランス状態を指針突起９との
関係で見るバランス目盛１３が表示されている。Reference numeral 11 denotes a synthetic resin weighing rod having a triangular intermediate fulcrum 12 which is swingably supported by the upper end fulcrum receiver 10 of the strut 7, and is located on the intermediate fulcrum 12 of the weighing rod 11. Shows a balance scale 13 for viewing the balance state of the balance rod 11 in relation to the pointer protrusion 9.

【００１２】また、前記秤杆１１の両端部にはＶ形縁部
を有する扇形の吊孔１４，１５が設けられ、この両端吊
孔１４，１５にフック杆１６ａ，１７ａを有する左右一
対の秤皿１６，１７がバランスをとって図１の如く吊持
される。この一方の秤皿１６には被測定物１８が載せら
れ、他方の秤皿１７にはこの被測定物１８の重量を計る
分銅１９が載置されるようになっているが、この分銅１
９は本実施例の場合、１個０．５ｇの鉄板と１個１ｇの
鉄板を数十個ずつ備えている。Further, fan-shaped hanging holes 14 and 15 having V-shaped edges are provided at both ends of the balance rod 11, and a pair of left and right weighing pans having hook rods 16a and 17a in the both-end hanging holes 14 and 15 are provided. 16 and 17 are balanced and suspended as shown in FIG. An object to be measured 18 is placed on the one weighing pan 16, and a weight 19 for weighing the object to be measured 18 is placed on the other weighing pan 17.
In the case of this embodiment, 9 is equipped with 0.5 g of iron plates and tens of iron plates of 1 g each.

【００１３】２０は前記載物台１′の内部に格納可能な
大きさに形成した合成樹脂の中空円形台からなるバラン
ス台で、このバランス台２０は下方へ凸湾曲した球面部
２１と内部中心に突設した嵌合口２２を有し、この嵌合
口２２を前記支柱７の下端部に嵌合して簡単に抜け外れ
ないように固定される。従って、このバランス台２０は
前記載物台１′を任意の高さ位置に図１の如く上げた時
に、その球面部２１が載物台１′の下方へ突出して机上
面２３に揺動可能に接床されるようになる。Reference numeral 20 denotes a balance base which is a hollow circular base made of synthetic resin and is formed in such a size that it can be stored inside the above-mentioned object base 1 '. The balance base 20 has a spherical portion 21 convexly curved downward and an inner center. It has a fitting port 22 projecting from it and is fitted to the lower end of the column 7 and is fixed so as not to come off easily. Therefore, the balance table 20 is capable of swinging on the desk top surface 23 when the above-mentioned table 1'is raised to an arbitrary height position as shown in FIG. 1 so that its spherical portion 21 projects below the table 1 '. Will be in bed with you.

【００１４】而して、前記構成の天秤教材によれば、前
記秤台１（可動載物台１′）を机上面２３に接床する最
下位置に下げた状態にすることにより、一方の秤皿１６
に被測定物１８を載せ、他方の秤皿１７に分銅１９を載
せて被測定物１８の重量を計ったり、両方の秤皿１６，
１７に適宜の物体（図示せず）を載せて釣り合いの実験
を行ったりすることができる。According to the teaching material having the above-described structure, one of the balance table 1 (movable table 1 ') is lowered to the lowest position where it comes into contact with the desk top surface 23. Weighing pan 16
The object to be measured 18 is placed on the balance plate 17, the weight 19 is placed on the other weighing pan 17, and the object to be measured 18 is weighed.
An appropriate object (not shown) may be placed on 17 to perform a balance experiment.

【００１５】また、前記秤台１（可動載物台１′）を支
柱７に沿って任意の高さ位置に図１の如く上げ、前記バ
ランス台２０の球面部２１が机上面２３に揺動可能に接
床する状態にすれば、この載物台１′の円形凹所４に小
鋼球３を収納し、且つ天秤全体が転倒しないように前記
載物台１′の上面外周部に複数個のバランス体６を適宜
の配置間隔で位置決め載置して、揺動バランスの実験を
行うことができる。Further, as shown in FIG. 1, the balance table 1 (movable table 1 ') is raised to an arbitrary height position along the support column 7, and the spherical surface portion 21 of the balance table 20 swings on the desk top surface 23. If possible, the small steel balls 3 are stored in the circular recess 4 of the stage 1 ', and a plurality of scales are provided on the outer peripheral portion of the upper surface of the stage 1'to prevent the entire balance from falling. The individual balance bodies 6 can be positioned and placed at appropriate intervals to perform rocking balance experiments.

【００１６】[0016]

【考案の効果】以上説明したように、本考案の天秤教材
によれば、従来の天秤としての使い方の他に、前述した
ような揺動バランスの実験を行うことができる効果があ
る。As described above, according to the balance teaching material of the present invention, in addition to the conventional use as a balance, the above-described swing balance experiment can be performed.

【図面の簡単な説明】[Brief description of drawings]

【図１】本考案の一実施例による天秤教材を揺動バラン
スの実験状態で示した要部断面の構成説明図。FIG. 1 is an explanatory view of a cross section of a main part showing a balance teaching material according to an embodiment of the present invention in an experimental state of swing balance.

【図２】図１のＡ−Ａ線に沿う横断平面図。FIG. 2 is a cross-sectional plan view taken along the line AA of FIG.

【符号の説明】[Explanation of symbols]

１…秤台、１′…可動載物台、２…載物台の中心孔、３
…小鋼球、４…載物台の円形凹所、５…載物台の突起、
６…バランス体、７…支柱、１０…支柱上端の支点受、
１１…秤杆、１２…秤杆の中間支点、１６，１７…秤
皿、１８…被測定物、１９…分銅、２０…バランス台、
２１…球面部、２３…机上面。1 ... Scale stand, 1 '... Movable stage, 2 ... Center hole of stage, 3
… Small steel balls, 4… Circular recesses on the stage, 5… Protrusions on the stage,
6 ... Balance body, 7 ... Strut, 10 ... Support point support at the upper end of the strut,
11 ... Scale rod, 12 ... Intermediate fulcrum of scale rod, 16, 17 ... Scale plate, 18 ... Object to be measured, 19 ... Weight, 20 ... Balance stand,
21 ... spherical part, 23 ... desk top.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 机上に設置可能な秤台と、上端に支点受
を有し前記秤台上に突出する支柱と、この支柱の上端支
点受に揺動可能に支承される中間支点を有し両端に左右
一対の秤皿がバランスをとって吊持される秤杆と、前記
秤皿に載置される適当数の分銅とを具備する天秤教材に
おいて、前記秤台を支柱に対して摩擦係合する中心孔を
有し前記支柱に対し任意の高さ位置に上げ下げできる円
形中空状の可動載物台として形成し、この可動載物台の
上面中央部に小鋼球を転動可能に収納する円形凹所を設
け、前記載物台の上面外周部に所定個数の突起を円周方
向に等配して突設し、この任意の突起位置に複数個のバ
ランス体を位置決めして載置できるようにしたこと、前
記支柱の下端部に下方へ凸湾曲した球面部を有し前記載
物台の内部に格納可能な大きさのバランス台を固定した
ことを特徴とする天秤教材。1. A balance table that can be installed on a desk, a column having a fulcrum support at the upper end and protruding above the platform, and an intermediate fulcrum pivotably supported by an upper fulcrum support of the column. In a balance teaching material comprising a balance rod on both ends of which a pair of left and right balance pans are suspended in balance, and an appropriate number of weights mounted on the balance pan, the balance stand is frictionally engaged with the support post. It is formed as a circular hollow movable stage which has a central hole that can be raised and lowered to an arbitrary height position with respect to the column, and a small steel ball is rotatably housed in the center of the upper surface of the movable stage. A circular recess is provided, and a predetermined number of projections are provided on the outer peripheral portion of the upper surface of the above-described object table so as to be evenly arranged in the circumferential direction, and a plurality of balance bodies can be positioned and placed at these arbitrary projection positions. In this way, the lower end of the column has a spherical portion that is convexly curved downward, and can be stored inside the above-described object platform. A balance teaching material characterized by fixing a balance stand of an effective size.