LINK MEMBER FOR PUSH-PULL CHAIN AND PUSH-PULL CHAIN AS WELL AS PUSH-PULL DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce a manufacturing cost of a link member that is used for a push-pull chain.SOLUTION: Laterally adjacent link members (27) and (28) have two sidewalls (31, 32) and (41, 42) arranged at predetermined intervals in the width direction, respectively. Respective sidewalls (31, 32) and (41, 42) include support pins (36) and (46) integrally projected from the lower part of the right end of the sidewall to the outside in the width direction, and slide tubes (37) and (47) integrally protruded from the lower part of the left end of the sidewall to the outside in the width direction. Guide surfaces (51) and (61) and supporting surfaces (52) and (62) are formed in the outer circumferential part of the support pins (36) and (46). A guided hole (65) externally fitted to the guide surface (51) of the left side link member (27) is penetrated to the radial direction in the cylindrical wall (48) of the slide tube (47) of the right side link member (28). Also, a supported hole (66) externally fitted around the axial center in a swingable manner is formed in the supporting surface (52) of the left side link member (27).SELECTED DRAWING: Figure 3