Cooling tubing for winding

Abstract

The present invention has a cooling tubing ( 8 ) that is wound around an outer surface ( 9 S) of an object ( 9 ) to be cooled and cools the object. ( 9 ) to be cooled, by means of a cooling medium passed therethrough. The cooling tubing ( 8 ) is an angular tubing of which the cross-sectional shape is an angular tubular shape.

1 - 5 . (canceled) 
     
     
         6 . A speed reducer comprising:
 a reduction gear; and   a cooling tubing that is wound around an outer surface of the reduction gear and cools the reduction gear by means of a cooling medium passed therethrough,   wherein the cooling tubing is an angular tubing of which a cross-sectional shape is an angular tubular shape.   
     
     
         7 . The speed reducer according to  claim 6 ,
 wherein the angular tubing is a tubing formed by deforming a tubing of which a cross-sectional shape is a circular tubular shape into an angular tubular shape.   
     
     
         8 . The speed reducer according to  claim 7 ,
 wherein the angular tubing is a tubing formed by winding a tubing of which the cross-sectional shape is a circular tubular shape around the outer surface of the reduction gear, and then applying an external force to an outer surface of the tubing to crush and plastically deform the tubing into an angular tubular shape.   
     
     
         9 . The speed reducer according to  claim 6 ,
 wherein the angular tubing is a tubing in which stepped portions are formed in mutually facing surfaces among four outer surfaces of the tubing of which the cross-sectional shape is a quadrangular tubular shape, and   wherein the angular tubing is wound substantially in parallel around the outer surface of the reduction gear such that the outer surfaces in which the stepped portions are not formed face the outer surface of the reduction gear and the stepped portions face and overlap the stepped portions of the adjacent angular tubing.   
     
     
         10 . The speed reducer according to  claim 9 , 
 wherein one stepped portion of the overlapping facing stepped portions has a convex plugging portion and the other stepped portion has a concave plugged portion, and   wherein the convex plugging portion is fitted to the concave plugged portion.