Passenger conveyor

Patent metadata

Field	Value
Publication number	US-10065837-B2
Application number	US-201715590358-A
Country	US
Kind code	B2
Filing date	May 9, 2017
Priority date	May 10, 2016
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A passenger conveyor (10) comprises a plurality of treads (16) interconnected to form an endless tread band (17), the passenger conveyor (10) comprising a chain and sprocket drive system including at least two drive sprockets (24a, 24b), each drive sprocket (24a, 24b) drivingly coupled to a respective drive chain (20a, 20b), each drive sprocket (24a, 24b) having a predetermined number of drive sprocket teeth (38a, 38b) positioned at a predetermined drive sprocket teeth pitch (αa, αb) with respect to each other, wherein the drive sprockets (24a, 24b) are configured to rotate with the same angular velocity, but at a predetermined phase difference (β) with respect to each other.

First claim

What is claimed is:

1. Passenger conveyor comprising a plurality of treads interconnected to form an endless tread band, the passenger conveyor comprising:
a chain and sprocket drive system including at least two drive sprockets,
each drive sprocket drivingly coupled to a respective drive chain,
each drive sprocket having a predetermined number of drive sprocket teeth positioned at a predetermined drive sprocket teeth pitch (αa, αb) with respect to each other,
wherein the drive sprockets are configured to rotate with the same angular velocity, but at a predetermined phase difference (β) with respect to each other.

2. Passenger conveyor according to claim 1 , wherein the at least two drive sprockets are a pair of drive sprockets.

3. Passenger conveyor according to claim 1 , wherein the drive chains are located at opposite lateral sides of the endless tread band.

4. Passenger conveyor according to claim 1 , wherein each of the drive chains has the configuration of any of a roller chain, a detachable chain, a pintle chain, a silent chain, and a leaf chain.

5. Passenger conveyor according to claim 1 , wherein the chain and sprocket drive system is configured to drive moving handrails.

6. Passenger conveyor according to claim 1 , wherein the chain and sprocket drive system is configured as a main drive system drivingly coupling a motor to tread chain drive sprockets.

7. Passenger conveyor according to claim 1 , wherein the drive sprockets are configured to rotate around a common drive sprocket axis (A).

8. Passenger conveyor according to claim 7 , wherein the drive sprockets are supported on a common drive sprocket shaft.

9. Passenger conveyor according to claim 1 , wherein each drive sprocket has a same predetermined number of drive sprocket teeth positioned at same predetermined drive sprocket teeth pitch (αa, αb).

10. Passenger conveyor according to claim 9 , wherein the drive sprockets are configured to rotate at a phase difference (β) corresponding to between a quarter and three quarters of the drive sprocket teeth pitch (αa, αb) with respect to each other.

11. Passenger conveyor according to claim 10 , wherein the drive sprockets are configured to rotate at a phase difference corresponding to a half of the drive sprocket teeth pitch (αa, αb) with respect to each other.

12. Passenger conveyor according to claim 1 , wherein the drive chains are tread chains drivingly coupled to the tread band, respectively.

13. Passenger conveyor according to claim 12 , wherein the tread chains are located at opposite lateral sides of the endless tread band, respectively.

14. Passenger conveyor according to claim 12 , wherein the tread chains are coupled to respective treads of the endless tread band by tread chain axles having a cranked configuration.

15. Passenger conveyor according to claim 14 , wherein each of the treads of the endless tread band is connected to a corresponding tread chain link of each of the tread chains via a respective tread chain axle.

Assignees

• Otis Elevator Co

Inventors

• Park Chan-Jong

Classifications

• B66B21/04

  linear type · CPC title

• B66B23/022 Primary

  with polygon effect reduction means · CPC title

• B66B23/026 Primary

  with a drive or carrying sprocket wheel located at end portions · CPC title

• B66B23/24

  Handrails (driving gear therefor B66B23/02; tensioning means therefor B66B23/16; preventing jamming thereof by foreign objects B66B29/04; accessories therefor B66B31/02) · CPC title

• B66B23/024 Primary

  Chains therefor · CPC title