| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an engagement chain type advancing/retreating operation device which prevents complication of a drive control mechanism, occurrence of trouble on chain mounting work, increase of a work load, and increase of chain running noise and vibration, achieves miniaturization and lowering of the floor of the device, and reduces wear of an engagement chain. <P>SOLUTION: In this engagement chain type advancing/retreating operation device 100, a chain engagement attitude is kept by bringing respective chain rigid direction-side buckling regulation flat surfaces 111AA, 112AA of an engagement-side internal tooth plate 111A and an engagement-side external tooth plate 112A into surface contact with reverse direction-side buckling regulation flat surfaces 111B, 112BB, and chain rigid direction-side curved engagement surfaces 111BA, 112BA and reverse direction-side curved engagement surfaces 111AB, 112AB engage with each other. <P>COPYRIGHT: (C)2012,JPO&INPIT |
