Patent ID: 8033972
Filing Date: 2011-10-11
Classification: B29C,B29D,B29L,F16C,Y10T

Abstract:
1. A moving unit comprising: a rail being made of aluminum or an aluminum alloy; a moving body having a weight of 50 kg to several hundred kg; and a roller being connected to said moving body, said roller contacting said rail and rolling thereon, wherein said roller comprises: a tubular core having an outer circumferential face in which a plurality of groove sections are formed; wherein the plurality of groove sections are arranged in the circumferential direction of said tubular core and extended in the axial direction thereof, the groove sections are constituted by first groove section, which are provided on the one end side, and second groove sections, which are provided on the other end side, and the first groove sections and the second groove sections are alternately arranged in the circumferential direction of said tubular core; and a resin coat section continuously coating the outer circumferential face of said tubular core, an inner face of the groove section, both ends of said tubular core and at least parts of an inner circumferential face thereof, wherein said tubular core is made of glass fiber-reinforced resin or metal, wherein said resin coat section is made of DURACON, acetal copolymer, or composite resin including potassium titanate fibers, said resin coat section has a thickness of about 0.5 mm, and wherein said moving body is moved and guided along said rail by rolling said roller on said rail.