Positioner and composite curl cord

• US 8,878,061 B2
• Filed: 01/18/2011
• Issued: 11/04/2014
• Est. Priority Date: 06/25/2004
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Yaskawa Denki
• Original Assignee: Kabushiki Kaisha Yaskawa Denki
• Inventors: Hara, Masaaki, Imanaka, Takayuki, Nakano, Mitsuyoshi
• Primary Examiner(s): Thompson, Timothy
• Assistant Examiner(s): Ng, Sherman
• Application Number:
  US13/008,062
• Publication Number:
  US 20110108305A1
• Time in Patent Office: 1,386 Days
• Field of Search: 174/47, 174/69
• US Class Current: 174/69
• CPC Class Codes: B25J 19/0029 arranged within the different robot elements
• CPC Class Codes: H02G 11/00 Arrangements of electric cables or lines between relatively-movable parts

Abstract

In a positioner according to the present invention, the rotating table and a hollow shaft is rotated by a motor via a speed reduction gear. In such a configuration, an air tube and a cable which supplies the air or electric power used to operate a jib on the rotating table are provided via the rotary joint arranged at one end of the shaft. A communication device may be provided on the rotating table by detaching the rotary joint and arranging a composite curl cord. The communication device may be provided by the rotary joint and a wireless communication device without using the composite curl cord.

Claims

1. A composite curl cord comprising:

a movable cable for communication in which characteristic impedance thereof is stably held;

a cable for an IO signal and electric power which is bonded with the movable cable for communication such that core directions thereof are parallel to each other; and

an air tube banded which is bonded with the movable cable such that core directions thereof are parallel to each other,

wherein the composite curl cord is winded in a coil shape while being applied with torsion in advance in a direction of reducing a winding diameter of the composite curl cord.

2. The composite curl cord according to claim 1, wherein a winding inside diameter of the composite curl cord is 2.5 times or less with respect to a largest sectional diameter among sectional diameters of the air tube, the cable for an IO signal and electric power, and the movable cable for communication.