SELF-LOCKING JOINT, IN PARTICULAR ORTHOTIC JOINT

The object of the invention is to create a self-locking joint, in particular an orthotic joint, which may be unlocked with little effort, so that even handicapped patients may be able to unlock the joint. For that purpose, the joining pieces (1, 2) have curved profiles (5, 6) that cross each other a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KOPP, FRANZ OTTO, SPANDAU, KAI HENNING, DZIUBIEL, MARIAN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS BEARINGS BLASTING DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FLEXIBLE SHAFTS FOMENTATION GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HUMAN NECESSITIES HYGIENE LIGHTING MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL TREATMENT OR PROTECTION OF EYES OR EARS WEAPONS
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Beschreibung
Zusammenfassung:	The object of the invention is to create a self-locking joint, in particular an orthotic joint, which may be unlocked with little effort, so that even handicapped patients may be able to unlock the joint. For that purpose, the joining pieces (1, 2) have curved profiles (5, 6) that cross each other at such a large angle that a rolling body (7) guided in both curved profiles (5, 6) and whose axis lies at the intersection between the median lines (10, 11) of the curve profiles (5, 6) moves freely along the median lines (10, 11) of the curved profiles (5, 6) when one joining piece (1, 2) rotates against the other. A self-locked state of the joint is reached when the .sigma. angle between imaginary tangents to the median lines (10, 11) applied to their intersection approaches zero and the line that connects the centres of the curvature circles of both curved profiles (5, 6) does not extend through the axis of rotation (4) of the joint in the crossing or contact point in the locked position.