Bathroom weighing scale - works on folding parallelogram method and gives direct reading

The instrument, which has the advantage of being compact, easy to calibrate, of variable range and simple and cheap to mass produce, is particularly suitable as bathroom scales. The weight value can be displayed directly by an electrical method. The mechanism translates the vertical weight acting on...

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1. Verfasser: JACQUES FERNAND LANGLAIS
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung:The instrument, which has the advantage of being compact, easy to calibrate, of variable range and simple and cheap to mass produce, is particularly suitable as bathroom scales. The weight value can be displayed directly by an electrical method. The mechanism translates the vertical weight acting on the top platform (1) into a horizontal force in a stiff ribbon (9). Knife edged members (3, 4) allow the assembly to pivot as a parallelogram about bearing points (16, 17, 26, 27) in shoulders on the top and bottom plates. By means of an adjustment screw (11) the angle of inclination (alpha) of the pivoting members can be varied between 30 deg. and 60 deg. thus setting the sensitivity. Strain produced in the anchor sheet (7) by the tension in the ribbon is converted into an electrical signal by strain gauges (18, 19). La présente invention concerne l'industrie des instruments de pesage. Des couteaux parallèles 3 et 4 forment parallélogramme déformable avec un plateau supérieur porte-charge 1 et un plateau inférieur fixe 2. Inclinés à 45 degrés , ces couteaux permettent d'opposer à un poids vertical une force antagoniste horizontale. Celle-ci est fournie par exemple par un ruban de tirage 9 fixé en 8 à un bout d'une lame de flexion 7, celle-ci étant solidaire par ailleurs du plateau support 2. Les jauges de contraintes 18 et 19 permettent de détecter la flexion, et par là de mesurer le poids appliqué. Application notamment comme pèse-personnes plat.