Tsubakimoto Chain Company

Tomoyuki Saji

Keisuke Murakami

Tomoo Suko

Yoshifumi Takeuchi

Naoto Shibata

Kohei Nakanishi

Satoshi Ueda

Makoto Kanehira

Masatoshi Sonoda

Toru Wada

Takeshi Kondo

Toshihiko Takashima

Hiroko Ishida

Provided is an interlocking chain unit configured such that chains reliably and firmly engage with each other and that the buckling and twisting of a rigidified chain portion are avoided. An interlocking chain unit is configured such that the outer edges of a plate overlap region (P) are defined by contact portion faces and flat buckling restricting end faces, and that the plate overlap region (P) is constructed from the outlines of two plate overlap portions (Pa, Pa) which are point-point-symmetric about the point (C) of intersection between hook-shaped interlocking end faces and the buckling restricting end faces.

Engagement chain unit

An interlocking chain type forward and backward actuating device is provided that does not increase workload involved in assembling the device, adjusting the rotation phase, and servicing and maintaining the device. The device is capable of smoothly actuating a driven body by advancing and retracting the body, and of preventing any pulsation or the like of the meshing chain. The interlocking chain type forward and backward actuating device includes chain-guide grooves formed so as to equalize an interlocked-state pin-to-pin distance (D) between a pair of connecting pins that face each other in a chain interlocking imaginary plane (S) and a rigid-state pin-to-pin distance (D) between a pair of connecting pins.

Advancing/retracting actuation device with meshing chain

Chain detachment and chain entry are avoided, and a process for setting the length of a meshing chain is avoided, while the chain feed length can also be freely changed. A meshing chain stopper (L) comprises a meshing chain stopper attachment part () and a contact-stop protrusion (). The contact-stop protrusion () is contact-stopped at a contact-stop point (A) provided on the periphery of a chain locus (L) when a pair of meshing chains () are being driven.

Meshing chain stopper

Provided is an interlocking chain unit that has reliable and strong interlocking and avoids buckling, breaking, and bending of a rigidified chain portion. In the interlocking chain unit (), the interlocking operation of an outer tooth link plate (BZ) and an outer tooth link plate (AY) that are just about to complete the interlocking operation is completed in a manner that causes a first inter-pin distance (d) and a second inter-pin distance (d) become substantially equal to each other, and causes a third inter-pin distance (d) to approach the second inter-pin distance (d).

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 () is configured in such a manner that a pair of flat face-shaped chain support faces (AS,AS) which sandwich and support a rigid chain portion (G) from both sides thereof each form a portion of each of the guide groove faces () of chain guide grooves () while being continuously connected to each of a pair of curved guide faces (BS,BS) which respectively guide disengaged portions (H,H) of a pair of interlocking chains (), the disengaged portions (H,H) having been disengaged from each other.

Engagement chain type device for forward and backward movement operation

The invention relates to an engagement chain type driving device including a pair of driving sprockets, which rotate positively and reversely in opposite directions about a pair of rotating shafts, a pair of engagement chains, which engage with each other by the pair of driving sprockets so to be integrated together, and a driving source, which drives the pair of driving sprockets, wherein the engagement chain includes inner tooth plates and outer tooth plates, which each include buckling limiting flat surfaces, the inner tooth plates and outer tooth plates being brought opposite to each other and into contact with each other when the engagement chains are integrated by the pair of driving sprockets, such that the flat surfaces hold the chain engagement position.

Engagement chain type driving device

An engagement chain in which a buckling strength of a pair of engagement chains engaged with each other is improved without blocking engagement operations between inner tooth plates and between outer tooth plate. The chain includes inner tooth plates, bushes, outer tooth plates and connecting pins. Buckling limiting flat surfaces of adjoining plates are brought into surface contact with each other when opposing segments of the chain are integrated together by driving sockets.

Engagement chain

A hoisting and lowering driving engagement multi-row chain is disclosed, in which bending of the connecting pins in the chain is suppressed to avoid fatigue failure. Additionally, the load carrying balance in the chain width direction is improved, and contact vibrations and contact noises generated between the chain and the hoisting and lowering sprockets are suppressed. Endurance of the bush in the chain is thereby improved. Bending of connecting pins is avoided by press-fitting bushes, through which connecting pins pass, into intermediate tooth plates. This also improves load carrying balance widthwise. Contact noises and vibrations between the bushes and sprockets are suppressed by providing bushes with a separate sprocket engagement portion having a larger diameter than the press-fitting portion of the bushes.

Hoisting and lowering driving engagement multi-row chain

An engagement chain type hoisting and lowering device is disclosed, having a hoisting and lowering table attached to the upper end of two or more pairs of hoisting and lowering driving engagement chains. A driving motor drives two pairs of hoisting and lowering sprockets which, in turn, raise or lower two pairs of hoisting and lowering driving engagement chains. By arranging two pairs of hoisting and lowering driving engagement chains on two opposed sides of the hoisting and lowering table, buckling of the hoisting and lowering driving engagement chains is suppressed, resulting in stable hoisting and lowering operations without slippage of articles on the hoisting and lowering table, and chain endurance is improved. The device is designed so that the lowest position of the hoisting and lowering table can be lower than the height of the peripherally located driving motor, for ease and safety of operation and maintenance.

Hoisting and lowering device having engagement chains

A roller chain incorporates a plurality of rolling members between a roller and a bushing. A thrust bearing plate is provided between the end surfaces of the roller and inside surfaces of inner link plates. The outer diameter of the roller is smaller than the widths of the inner link plates and the outer link plates and the roller is accomodated in a projected area of the widths of the inner link plates and the outer link plates.

Chain

A roller chain incorporating the roller bearings wherein a plurality of rollers are disposed between a roller that functions as an outer ring and a bush that functions as an inner ring comprises a substantially ring-shaped retainer disposed on both ends of the roller respectively. The retainer includes a plurality of pockets for guiding at least a part of each of the rollers on the inner side of the retainer.

Growing community of inventors

Osaka, Japan

Tomoyuki Saji