ROTARY SHAFT DEVICE FOR INDUSTRIAL ROBOTS

In the rotary shaft device for industrial robots, a skirt (3c) is provided so as to extend downward from the outer surface of a member (3) rotatable around an axis $g(u), and a collar (7b) opposed to the inner surface of the skirt is projected from a fixed member (2), whereby these two members are s...

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Bibliographic Details
Main Authors TORII, NOBUTOSHI, OTSUKA, KAZUHISA
Format Patent
LanguageEnglish
Japanese
Published 19.05.1988
Edition4
Subjects
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Summary:In the rotary shaft device for industrial robots, a skirt (3c) is provided so as to extend downward from the outer surface of a member (3) rotatable around an axis $g(u), and a collar (7b) opposed to the inner surface of the skirt is projected from a fixed member (2), whereby these two members are set in opposition to each other with a narrow clearance left therebetween, to form a waterproof structure. Therefore, the entry of the dust and water droplets from the outside into the interior of the rotatable shaft can be prevented. This can prevent the corrosion, which is to be caused by the water droplets entering the rotatable shaft, of the inner parts such as a motor. Dispositif à arbre rotatif pour robots industriels dans lequel une jupe (3c) s'étend vers le bas depuis la surface externe d'un organe (3) rotatif autour d'un axe , et un collier (7b) opposé à la surface interne de la jupe fait saillie sur un organe fixe (2), ces deux organes étant mis en opposition l'un par rapport à l'autre en laissant entre eux un jeu étroit, afin de former une structure étanche à l'eau. Il est ainsi possible d'empêcher la pénétration de la poussière et de gouttelettes d'eau de l'extérieur à l'intérieur de l'arbre rotatif, ce qui permet de prévenir la corrosion, provoquée par les gouttelettes d'eau qui pénètrent dans l'arbre rotatif, des parties internes, par exemple d'un moteur.
Bibliography:Application Number: WO1987JP00849