Chain unit

Patent metadata

Field	Value
Publication number	US-10518976-B2
Application number	US-201916267781-A
Country	US
Kind code	B2
Filing date	Feb 5, 2019
Priority date	Feb 9, 2018
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A chain unit includes: a chain endlessly extending in a serial direction; a plurality of side rollers arranged on both sides of the chain at intervals along the serial direction of the chain; and a pair of revolving members provided on both sides of the chain and configured to rotate in conjunction with the travel of the chain. Each of the revolving members includes a revolving base and plural projections. The revolving base is located on the interior side of the chain. The projections are arranged in spaces between the neighboring side rollers in the serial direction of the chain so as to protrude from the revolving base.

First claim

What is claimed is:

1. A chain unit, comprising:
a chain endlessly extending in a serial direction;
a plurality of side rollers arranged outward of and on both sides of the chain at intervals along the serial direction of the chain; and
a pair of revolving members provided on both sides of a sprocket that transmits power to the chain, the pair of revolving members being configured to rotate in conjunction with travel of the chain,
wherein each of the revolving members comprises a revolving base located on an interior side of the chain, and a plurality of projections arranged in spaces between the neighboring side rollers in the serial direction of the chain so as to protrude from the revolving base.

2. The chain unit according to claim 1 , wherein the revolving members are provided in a region where a direction of travel of the chain changes.

3. The chain unit according to claim 1 , wherein the revolving base is formed in a belt shape having elasticity.

4. The chain unit according to claim 1 , wherein:
the revolving base is formed in a belt shape having elasticity; and
the plurality of projections are disposed in all the spaces between the neighboring side rollers in the serial direction of the chain.

5. The chain unit according to claim 1 , wherein the plurality of side rollers are arranged in a staggered manner on both sides of the chain along the serial direction of the chain.

6. The chain unit according to claim 1 , wherein the plurality of side rollers are disposed on both sides of the chain so as to be paired while the chain is interposed therebetween.

7. The chain unit according to claim 1 , wherein the chain includes:
plural pairs of inner plates; and
plural pairs of outer plates rotatably connected in series with the plural pairs of inner plates, the plurality of side rollers being disposed outside of the plural pairs of inner plates and the plural pairs of outer plates.

8. The chain unit according to claim 7 , wherein the chain includes a plurality of tubular members disposed between the plural pairs of inner plates.

9. The chain unit according to claim 8 , wherein the sprocket has a plurality of teeth received in respective spaces defined between adjacent tubular members of the plurality of tubular members.

10. The chain unit according to claim 1 , wherein the sprocket is disposed between the pair of revolving members and has a plurality of teeth received in the chain.

Assignees

• Fanuc Corp

Inventors

• Fujimoto Takeshi

Classifications

• B65G45/10 Primary

  Cleaning devices (adaptations of roller sleeves for cleaning belts B65G39/073) · CPC title

• B65G23/44

  Belt or chain tensioning arrangements · CPC title

• B65G23/06

  with projections engaging abutments on belts or chains, e.g. sprocket wheels · CPC title

• B65G17/38 Primary

  Chains or like traction elements (drive chains F16G13/00); Connections between traction elements and load-carriers · CPC title

• B65G2207/40

  Safety features of loads, equipment or persons · CPC title