JPS6170709U - - Google Patents

Description

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

第１図はこの考案の歪測定用ブリツジボツクス
の一実施例の構成を示す図、第２図は同上歪測定
用ブリツジボツクスを用いて１２０Ωのアクテイ
ブゲージを挿入する場合の配線例を示す図、第３
図は第２図の配線例により構成される平衡ブリツ
ジ回路を示す図、第４図は同上歪測定用ブリツジ
ボツクスを用いて２４０Ωのアクテイブゲージを
挿入する場合の配線例を示す図、第５図は同上歪
測定用ブリツジボツクスを用いて２４０Ωのアク
テイブゲージを二つ使用する場合の配線例を示す
図、第６図は従来の歪測定用ブリツジボツクスの
構成を示す図である。 １〜８…端子、ＲＤ０〜ＲＤ４…固定抵抗、Ｒ
Ａ１〜ＲＡ４…アクテイブゲージ、ｌ１〜ｌ５…
配線、３０１…ブリツジボツクス、３０２…リー
ド線。 FIG. 1 is a diagram showing the configuration of an embodiment of the bridgebox for strain measurement of this invention, FIG. 2 is a diagram showing an example of wiring when a 120Ω active gauge is inserted using the same bridgebox for strain measurement, and FIG.
The figure shows a balanced bridge circuit configured with the wiring example shown in Fig. 2, Fig. 4 shows a wiring example when a 240Ω active gauge is inserted using the bridge box for strain measurement, and Fig. 5 A diagram showing an example of wiring when two 240 Ω active gauges are used using the same bridge box for strain measurement as described above, and FIG. 6 is a diagram showing the configuration of a conventional bridge box for strain measurement. 1 to 8...Terminal, RD0 to RD4...Fixed resistance, R
A1~RA4...active gauge, l1~l5...
Wiring, 301...Bridgebox, 302...Lead wire.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ブリツジボツクスに配列した少なくとも第１な
いし第８の端子と、第２の端子と第７の端子間、
第３の端子と第８の端子間、第４の端子と第８の
端子間、第４の端子と第５の端子間に接続されそ
れぞれ所定の抵抗値を有する第１の抵抗群と、上
記抵抗値の倍の抵抗値を有し第１の端子と第６の
端子間に接続された第２の抵抗と、上記第５と第
６の端子間に第１の抵抗群の抵抗値と同じ抵抗値
の第１のアクテイブゲージが接続されたとき平衡
ブリツジ回路を構成するために上記第２と第６の
端子間、第３と第７の端子間および第４と第８の
端子間にそれだぞれ接続される第１の配線群と、
上記第５と第６の端子間に上記第１の抵抗群の抵
抗値の倍の抵抗値のアクテイブゲージが接続され
るとき平衡ブリツジ回路を構成するように第１と
第７の端子間および第２と第３の端子間にそれぞ
れ接続される第２の配線群と、上記第５と第６の
端子および第６と第７の端子間にそれぞれ第１の
抵抗群の抵抗値の倍の抵抗値を有するアクテイン
ブゲージが接続されたとき平衡ブリツジ回路を構
成するために第２の端子と第３の端子間を接続す
る配線とよりなる歪測定用ブリツジボツクス。 at least first to eighth terminals arranged in a bridge box, and between the second terminal and the seventh terminal;
a first resistor group connected between the third terminal and the eighth terminal, between the fourth terminal and the eighth terminal, and between the fourth terminal and the fifth terminal, each having a predetermined resistance value; A second resistor having a resistance value twice the resistance value and connected between the first terminal and the sixth terminal, and a resistance value equal to the resistance value of the first resistor group between the fifth and sixth terminals. When the first active gauge of resistance value is connected, it is connected between the second and sixth terminals, between the third and seventh terminals, and between the fourth and eighth terminals to form a balanced bridge circuit. a first wiring group connected to each other;
When an active gauge having a resistance value twice the resistance value of the first resistor group is connected between the fifth and sixth terminals, a balanced bridge circuit is formed. a second wiring group connected between the second and third terminals, and a resistance twice the resistance value of the first resistance group between the fifth and sixth terminals and the sixth and seventh terminal, respectively. A strain measuring bridge box comprising wiring connecting a second terminal and a third terminal to form a balanced bridge circuit when an active gauge having a certain value is connected.