LUBRICANT SEALING STRUCTURE, WAVE-MOTION GEAR DEVICE AND ACTUATOR

A strain wave gearing (1) is provided with a lubricant sealing structure that prevents a lubricant from leaking to the outside through 5a gap between a hollow input shaft (4) and an end plate (2). The lubricant sealing structure is provided with a labyrinth seal (20) that seals the gap. The labyrint...

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Bibliographische Detailangaben
Hauptverfasser:	ORII, Daisuke, KOBAYASHI, Syuhei
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CONVEYING CYLINDERS ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HANDLING THIN OR FILAMENTARY MATERIAL HEATING LIGHTING MECHANICAL ENGINEERING PACKING PERFORMING OPERATIONS PISTONS PNEUMATIC TUBE CONVEYORS SEALINGS SHOP CONVEYOR SYSTEMS STORING THERMAL INSULATION IN GENERAL TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A strain wave gearing (1) is provided with a lubricant sealing structure that prevents a lubricant from leaking to the outside through 5a gap between a hollow input shaft (4) and an end plate (2). The lubricant sealing structure is provided with a labyrinth seal (20) that seals the gap. The labyrinth seal (20) is configured by a plurality of gap portions (21a-21e) defined by an oil-repellent surface in which fine grooves are formed in a prescribed groove array pattern. The oil-10repellent surface is also formed at an outer peripheral surface portion (4d1) on an upstream side of the labyrinth seal (20). Leakage of a lubricant oil to outside of the device can be reliably prevented through the oil-repellent effect of the oil-repellent surface at the upstream side, the sealing effect of the labyrinth seal (20), and the 15oil-repellent effect from the oil-repellent surface of the labyrinth seal (20).