| 摘要 |
Chain unit members (3) consisting of a pair of side plates (11) opposite each at an appointed interval and a supporting plate (7) by which the lower parts of the side plates is formed of synthetic resin. The supporting plates of the adjacent chain unit members are linked with each other bendably in the lengthwise direction by hinge members (5) made of synthetic resin having an integral hinge property. The upper opening of the respective chain unit members is covered up by a covering member (13). Thereby, it is possible to decrease the production cost by simplifying the structure of chain unit members, and it is also possible to carry out attaching works in a short time by simplifying the connection works of the respective chain unit members. Furthermore, it is possible to prevent resin powder from being generated due to wearing of the respective chain unit members. Still furthermore, a cable is able to be securely accommodated despite a covering member being openably formed integrally at the guide members. <IMAGE> |
