Nippon Bearing Co., Ltd.

Toru Yamazaki

Yusuke Ueki

Taku Koyama

Tomohiko Kikuchi

Masaki Kawamura

Provided is a linear motion device having higher rigidity, higher load resistance, and superior guiding precision. In this linear motion device, a linearly moving elementthat moves linearly relative to a rail elementis provided, load pathsthrough which rolling elementsmove are provided between the rail elementand the linearly moving element, and endless rolling element circulation paths are formed in which the load pathsare made to communicate via return pathswith no-load paths, wherein the rolling elementsare cylinders of which the length is at least three times the diameter, the rolling elementsare configured so as to circulate through the endless rolling element circulation paths while being rotatably held by rolling element holdersconfigured by spacersprovided between adjacent rolling elementsand belt-shaped linking elementsthat link spacerstogether at both ends, the no-load pathsare formed by placing no-load path-constituting membersin linear holesformed in the linearly moving element, and the no-load path-constituting membersare configured such that the end surfaces of the rolling elementsare opened on the outward sides and the linking elementsof the rolling element holdersare exposed.

Linear motion device

Provided is a practical rolling element accommodating tool that engages firmly with a reinforcing material without compromising flexibility, wherein tension strength of the reinforcing material is sufficiently exhibited. A rolling element accommodating tool for rotatably accommodating a plurality of rolling elements () at predetermined intervals is placed along an endless circulation path () along which the rolling elements () circulate in a linear motion device () provided with the endless circulation path () and comprising a rail element () and a linear moving element () that moves linearly relative to the rail element (); wherein the rolling element accommodating tool has a main body configured from spacers () individually provided between adjacent rolling elements (), and connecting parts () oriented in a direction orthogonal to the direction in which the spacers () are aligned, protruding on both sides of the rolling elements () in a state of accommodating the rolling elements (), and serially connecting the spacers; reinforcing films () having the same length in the longitudinal direction as the connecting parts () being contained within the connecting parts (); and the reinforcing films () being formed at large widths in predetermined positions.

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Ojiya, Japan

Toru Yamazaki