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US 4,767,257 AGranted
Industrial robot
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorHisao Kato
Life of this patent
Estimating the term…
Abstract
A piping for control/drive medium of an industrial robot having at least one robot arm, which is to be supplied from a main body of the robot to a hand device thereof, is composed of a plurality of pipe segments adjacent ones of which are connected by a rotary joint disposed on a joint portion of the robot arm, with a rotary axis of the rotary joint being aligned with a rotary center of the joint portion.
Claims10
An industrial robot, comprising:
- a vertically oriented main body (1, 2), robot arm means (3, 4) operatively connected to said main body and having a first joint portion (5) at one end housing a drive unit for moving said robot arm means with respect to said main body in a horizontal plane orthogonal to a longitudinal axis of said main body, a hand device (9) connected to another, opposite end of said robot arm means and movable with respect thereto by a drive unit housed in a second joint portion (7) thereof, and piping for supplying a control/drive medium from said main body to said hand device, said piping comprising a first pipe segment (13a) fixedly supported by said main body and extending vertically, a second pipe segment (13b, 13c) fixedly supported on said robot arm means and extending therealong, and a third pipe segment (13d) connected to said hand device, adjacent ones of said first, second and third pipe segments being connected by respective rotary joints (14a, 14c) individually disposed on said joint portions of said robot arm means with rotary axes of said rotary joints being individually aligned with rotary centers of said joint portions of said robot arm means, each rotary joint comprising a first member fixedly connected to one of said adjacent pipe segments and a second member fixedly connected to another pipe segment and coaxially disposed with said first member for relative rotation thereto.
Dependencies are inferred from the claim text.