JPS62115104U

JPS62115104U -

Info

Publication number: JPS62115104U
Application number: JP18491285U
Authority: JP
Priority date: 1985-11-29
Filing date: 1985-11-29
Publication date: 1987-07-22

Description

[Brief explanation of the drawing]

第１図ａ，ｂ〜第４図ａ，ｂは本考案の一実施
例を示し、第１図ａはアームの平面図、第１図ｂ
はアームの正面図、第２図は三脚に支持された伸
び計の正面図、第３図ａはレバー取付部の拡大図
、第３図ｂはそのｂ―ｂ線断面図、第４図ａは変
位検出器取付部の拡大図、第４図ｂはそのｂ―ｂ
線断面図、第５図および第６図は従来の伸び計の
二例を示す図である。３０：伸び計、３２：支柱、３３：支点部材、
３４ａ，３４ｂ：レバー、３５ａ，３５ｂ：アー
ム、３６：変位検出器、３７ａ〜３７ｄ：分銅、
３３５：軸受、３４１：継手、３４２：連結部材
、３４３，３４４：ピン、３４５：ばね、３５１
：アーム本体、３５２：クリツプ、３５３：試験
片係止部、３５４：ばね、３６５：差動トランス
、３６５ａ：コイル、３６５ｂ：コア、３６９：
鋼線。 Figures 1a, b to 4a, b show an embodiment of the present invention; Figure 1a is a plan view of the arm; Figure 1b is a plan view of the arm;
is a front view of the arm, Fig. 2 is a front view of the extensometer supported on a tripod, Fig. 3a is an enlarged view of the lever mounting part, Fig. 3b is a sectional view taken along line bb, Fig. 4a is an enlarged view of the displacement detector mounting part, and Fig. 4b is its b-b
The line cross-sectional views, FIGS. 5 and 6, are diagrams showing two examples of conventional extensometers. 30: extensometer, 32: pillar, 33: fulcrum member,
34a, 34b: lever, 35a, 35b: arm, 36: displacement detector, 37a to 37d: weight,
335: bearing, 341: joint, 342: connecting member, 343, 344: pin, 345: spring, 351
: Arm body, 352: Clip, 353: Test piece locking part, 354: Spring, 365: Differential transformer, 365a: Coil, 365b: Core, 369:
steel wire.

Claims

[Claims for Utility Model Registration] A first and a second arm each having an arm connecting portion at its distal end and rotatably supported by a fulcrum member disposed a predetermined distance apart from each other.
a displacement detector that cooperates with the first and second levers to detect the amount of relative displacement between the two levers, and a clip that clamps and locks the test piece at the gage position; and the other end is connected to the arm connecting portion with a shape that allows rotation in the direction of extension of the test piece and with a predetermined contact pressure.
and a second arm, and the contact pressure is applied to the first arm and the first lever, and the second arm and the second lever using the fulcrum member as a fulcrum during elongation measurement. It is set so that each arm rotates together with the action of contact pressure, and each arm rotates relative to each lever against the contact pressure when a force exceeding a predetermined value is applied to each arm when the test piece breaks. An extensometer characterized by: