Guide shoe

Patent metadata

Field	Value
Publication number	US-2016138684-A1
Application number	US-201514935741-A
Country	US
Kind code	A1
Filing date	Nov 9, 2015
Priority date	Nov 14, 2014
Publication date	May 19, 2016
Grant date	—

Abstract

An object is to provide a guide shoe having a simple structure and suppressing a significant shift in pitch line while reducing friction losses and preventing possible noise. In a guide shoe having a shoe surface on which a traveling chain is guided, the shoe surface includes a plate guide surface which is formed on an upstream side of the shoe surface in a shoe longitudinal direction and on which only chain plates are slidably guided, a guiding protruding portion which is formed on a downstream side of the plate guide surface and on which only a chain roller or a chain bush is guided, and a continuously transitioning protruding portion that smoothly connects the plate guide surface and the guiding protruding surface together. Plate escaping portions are formed on opposite sides across the guiding protruding portion in a shoe width direction to avoid contact with the chain plates.

First claim

What is claimed is:

1 . A guide shoe having a shoe surface on which a traveling chain is guided, wherein
the shoe surface includes a plate guide surface which is formed on an upstream side of the shoe surface in a shoe longitudinal direction and on which only chain plates are slidably guided, a guiding protruding portion which is formed on a downstream side of the plate guide surface and on which only a chain roller or a chain bush is guided, and a continuously transitioning protruding portion that smoothly connects the plate guide surface and the guiding protruding surface together, and plate escaping portions are formed on opposite sides across the guiding protruding portion in a shoe width direction to avoid contact with the chain plates.

2 . The guide shoe according to claim 1 , wherein an upstream end of the plate escaping portion is formed downstream of an upstream end of the guiding protruding portion at a distance from the upstream end, with the distance being equal to or more than double of a chain pitch.

3 . The guide shoe according to claim 1 , wherein at least an upstream end of the continuously transitioning protruding portion is formed like a taper so as to increase in width from an upstream side toward a downstream side.

4 . The guide shoe according to claim 1 , wherein outer plate guide wall portions are each formed on an outer side of the corresponding plate escaping portion in the shoe width direction to face an outer side surface of an outer plate of the chain plates to guide the chain.

5 . The guide shoe according to claim 1 , wherein a groove-like outer plate contact avoiding portion is formed in the plate guide surface to avoid contact with only the outer plate of the chain plates.

6 . The guide shoe according to claim 1 , wherein a groove-like inner plate contact avoiding portion is formed in the plate guide surface to avoid contact with only an inner plate of the chain plates.

Assignees

• Tsubakimoto Chain Co

Inventors

• Kurono Yuta
• Miyazawa Toshihiko

Classifications

• F16H7/18 Primary

  Means for guiding or supporting belts, ropes, or chains (construction of pulleys F16H55/36) · CPC title

• F16H2007/0893

  Circular path · CPC title

• F16H2007/0872

  Sliding members · CPC title

• F16H2007/185

  the guiding surface in contact with the belt, rope or chain having particular shapes, structures or materials · CPC title