| 摘要 |
Provided is an interlocking chain forward and backward actuating device type device, the device being configured so that the space within the device is effectively utilized and that a device configuration most suitable for driving interlocking chains is selected to enable the interlocking chains to be smoothly driven. An interlocking chain type forward and backward actuating device (100) is configured in such a manner that a pair of flat face-shaped chain support faces (132AS, 132AS) which sandwich and support a rigid chain portion (110G) from both sides thereof each form a portion of each of the guide groove faces (132, 132) of chain guide grooves (131, 131) while being continuously connected to each of a pair of curved guide faces (132BS, 132BS) which respectively guide disengaged portions (110H, 110H) of a pair of interlocking chains (110, 110), the disengaged portions (110H, 110H) having been disengaged from each other. |
| 主权项 |
1. An interlocking chain type forward and backward actuating device comprising a pair of interlocking chains, a drive sprocket, and a chain guide, wherein
the interlocking chains are each composed by coupling, in the chain longitudinal direction, a plurality of pairs of hook-shaped inner tooth plates facing each other in the chain width direction and a plurality of pairs of hook-shaped outer tooth plates arranged on the outer sides of the hook-shaped inner tooth plates in the chain width direction by pairs of front and rear connecting pins, the interlocking chains are integrally made rigid to form a rigid chain part in a state where the interlocking chains are interlocked with each other and arranged to face each other, the interlocking chains are disengaged from each other to bifurcate, the drive sprocket engages with a first one of the pair of interlocking chains from the side face of the rigid chain part to freely advance and retreat the pair of interlocking chains, and the chain guide has chain guide grooves that interlock a second one of the interlocking chains with the first interlocking chain to drive the second interlocking chain so as to follow the first interlocking chain, wherein a pair of planar chain support faces sandwiching and supporting the rigid chain part from both sides of the rigid chain part is provided, the planar chain support faces constitute parts of the guide groove faces of the chain guide grooves in a state where the planar chain support faces are continuous to a pair of curved guide faces, which respectively guide chain disengaged portions of the interlocking chains disengaged from each other, the planer chain support faces are arranged to face an interlocked portion between the interlocking chains forming the rigid chain part, the connecting pins of the first interlocking chain include a first connecting pin, which is located on an imaginary boundary plane dividing the planar chain support face and the curved guide face, the connecting pins of the second interlocking chain include a second connecting pin, which faces the first connecting pin along the imaginary boundary plane, the distance between the first connecting pin and the second connecting pin is defined as a pin-to-pin distance on the imaginary boundary plane, the connecting pins of the rigid chain part include a pair of connecting pins that face each other in parallel to the imaginary boundary plane dividing the planar chain support face and the curved guide face, the distance between the pair of connecting pins is defined as a pin-to-pin distance in a rigid state, and the pin-to-pin distance on the imaginary boundary plane is equal to the pin-to-pin distance in a rigid state. |
