Title:
【発明の名称】ケーブルドラグチェーン
Document Type and Number:
Japanese Patent JP3356733
Kind Code:
B2
Abstract:
A cable drag chain includes a plurality of link members (12) connected together end to end in a bendable manner. Each of the link members is molded of synthetic resin and includes a pair of opposed left and right side plates (16, 17), and upper and lower connecting plates (20, 18) connecting upper and lower edges, respectively, of the side plates. The upper connecting plate has one end made contiguous to one of the side plates via a resiliently deformable hinge portion (24), the other end of the upper connecting plate being formed with a locking portion (26) releasably engaged with a portion of the other side plate. The hinge portion has a circular recess formed in a central portion of an outside surface thereof and hence is reduced in cross-sectional area at the recessed central portion, so that the upper connecting plate has a tendency to resiliently flex at the recessed central portion in a given direction when the upper connecting plate is forced to move from an erected released position to a recumbent assembled position. The width and thickness of the hinge portion are determined in view of a maximum tensile stress and a maximum compressive stress of a synthetic resin material to such an extent that the hinge portion is deformable in an elastic region.
Inventors:
Shoichiro Komiya
Takayuki Matsuda
Takayuki Matsuda
Application Number:
JP29699899A
Publication Date:
December 16, 2002
Filing Date:
October 19, 1999
Export Citation:
Assignee:
Tsubakimoto Chain Co., Ltd.
International Classes:
B65H57/00; F16G13/16; F16H7/18; H02G11/00; (IPC1-7): F16G13/16; B65H57/00; H02G11/00
Domestic Patent References:
| JP5141481A | ||||
| JP573339A | ||||
| JP1028310A | ||||
| JP8205362A | ||||
| JP546757U | ||||
| JP372774Y2 |
Attorney, Agent or Firm:
Takashi Tsuno (1 outside)