Engagement chain type device for operating forward and backward movement

Patent metadata

Field	Value
Publication number	US-9541161-B2
Application number	US-201113978796-A
Country	US
Kind code	B2
Filing date	Dec 13, 2011
Priority date	Jan 12, 2011
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

Provided is an interlocking chain-type forward and backward actuating device, the device being configured so that an increase in the number of parts is minimized, an increase in the size of the device is avoided, the amount of scattering of lubricating oil to the outside of the device is reduced, the wear of connection pins is reduced, the breakage of the connection pins is avoided, and the striking noise and vibration of the chains occurring during the reception of the chains are reduced. Chain guide plates are respectively provided on both sides of a pair of interlocking chains in the chain width direction. Chain locus restriction members having chain locus restriction faces in contact with rigid chain portions, which are made rigid by engaging and integrating the pair of interlocking chains with each other, are disposed so as to be adjacent to the rigid chain portions.

First claim

The invention claimed is:

1. An interlocking chain type forward and backward actuating device comprising a pair of interlocking chains, a driven body, and a chain guide plate, wherein
the interlocking chains include hook-shaped inner tooth plates and hook-shaped outer tooth plates,
the hook-shaped outer tooth plates arranged alternately with the inner tooth plates in a chain longitudinal direction,
the inner tooth plates and the outer tooth plates coupled to one another in the chain longitudinal direction with coupling pins,
the coupling pins extending through the inner tooth plates and the outer tooth plates in a chain width direction,
at least one of the pair of interlocking chains being driven by a drive sprocket such that the interlocking chains become rigid with inner tooth plates of one interlocking chain are interlocked with inner tooth plates of the other interlocking chain, and outer tooth plates of the one interlocking chain are interlocked with outer tooth plates of the other interlocking chain, and such that the interlocking chains bifurcate from each other with the interlocked inner tooth plates being disengaged and the interlocked outer tooth plates being disengaged;
the driven body is mounted to the pair of interlocking chains,
the driven body is moved forward and backward according to forward and backward movement of the pair of interlocking chains,
the interlocking chain type forward and backward actuating device comprising a chain guide plate and a chain locus regulating means;
the chain guide plate comprising a first disengagement part guide and a second disengagement part guide, wherein the first disengagement part guide and the second disengagement part guide are operable to guide projecting portions of the coupling pins at a chain disengagement part where the interlocking chains are disengaged from each other,
the chain guide plate provided on both sides of the pair of interlocking chains,
the chain locus regulating means guides a rigid chain part,
the chain locus regulating means comprises a chain locus regulating face,
the chain locus regulating face operable to contact the rigid chain part where the interlocking chains are interlocked with each other to become rigid,
the chain locus regulating means comprising a pair of chain locus regulating members;
the chain locus regulating members bring the respective chain locus regulating faces into contact with outer plate faces from both sides of the rigid chain part in the chain width direction, the outer plate faces being included in a pair of respective outer tooth plates arranged outermost among the plurality of outer tooth plates included in the rigid chain part in the chain width direction,
wherein the chain locus regulating members are operable to guide the interlocking chains when the chains are interlocked and rigid, and the disengagement part guides are operable to guide the interlocking chains with the chain locus regulating face at a chain disengagement position and/or when the chains are not interlocked;
wherein the rigid chain part includes a first coupling pin and a second coupling pin, the first coupling pin extending through a first coupling pin passage in a rigid chain direction, and the second coupling pin extending through a second coupling pin passage in the rigid chain direction,
wherein the coupling pin passages are formed at the chain guide plate with the first coupling pin passage communicating with the first guide for the chain disengagement part, and the second coupling, pin passage communicating with the second guide for the chain disengagement part, and
the coupling pin passages have a passage width larger than a guide width of the disengagement part guides.

2. The interlocking chain type forward and backward actuating device according to claim 1 , wherein the coupling pin passages form groove shapes open to the rigid chain part in the chain width direction without extending through the chain guide plate.

3. The interlocking chain type forward and backward actuating device according to claim 1 , further comprising a spacer located between a pair of chain guide plates, wherein
the spacer defines a distance between the pair of chain guide plates, and
the guide plates are located at both sides of the pair of interlocking chains in the chain width direction.

4. The interlocking chain type forward and backward actuating device according to claim 1 , wherein
the chain locus regulating means includes a chain locus regulating member,
the chain locus regulating member brings the chain locus regulating face into contact with plate side faces of the inner tooth plate and the outer tooth plate included in the rigid chain parts from one side in the chain disengagement direction, and
the drive sprocket is located on the opposite side from the chain locus regulating member as viewed from the rigid chain parts and engages with one of the interlocking chains.

5. The interlocking chain type forward and backward actuating device according to claim 4 , wherein
a chain width direction regulating face faces the rigid chain part from the chain width direction,
the chain width direction regulating face contacts a distal end of a coupling pin included in the rigid chain part, and
the chain width direction regulating face forms a part of a chain guide plate face of the chain guide plate.

6. The interlocking chain type forward and backward actuating device according to claim 1 , wherein
the disengagement part guides are groove-shaped guides open to the chain disengagement part,
the disengagement part guides form the groove-shaped guides,
the disengagement part guides include grooved bottom faces,
the grooved bottom faces face a distal end of the coupling pins included in the chain disengagement part.

Assignees

• Kaisaku Junichi
• Wada Toru
• Takeuchi Yoshifumi
• Tsubakimoto Chain Co

Inventors

• Kaisaku Junichi
• Wada Toru
• Takeuchi Yoshifumi

Classifications

• B66F13/005

  Thrust chain devices · CPC title

• F16G13/20 Primary

  stiff; Push-pull chains · CPC title

• Y10T74/1884

  with sprocket wheel · CPC title

• B66F7/12

  by mechanical jacks · CPC title

• B66F3/02

  with racks actuated by pinions · CPC title