DUMMY SHAFT FOR JOINING STEP LINKS IN PASSENGER CONVEYOR, AND METHOD FOR SEPARATING STEP LINKS IN INTERCONNECTED STEP LINK BODY

WIPO Patent Application WO/2021/186715

A1

A first dummy shaft (50) includes: a first shaft (51) that passes through two step link shaft holes and a center hole of a bearing linked to the inner peripheral side of a roller; a second shaft (71) that is inserted in the axial direction so as to be engaged in a threaded manner with the first shaft and is capable of advancing and retreating in the axial direction along the bearing (72) side of the first shaft due to rotation; and a stopper (76) that is engaged with the bearing-side tip end of the second shaft, is capable of opening and closing due to axial-direction movement of the second shaft, and faces the outer-side surface of the bearing when opened. A stepped surface that faces the inner-side surface of the bearing is formed on the outer peripheral surface of the first shaft. The stopper opens or closes when the second shaft moves in a direction of being pulled toward the first shaft, and closes or opens when the second shaft moves in a direction protruding away from the first shaft.

ISSHIKI MASAHIKO (JP)
NAKAMURA SATOSHI (JP)

PCT/JP2020/012457

September 23, 2021

March 19, 2020

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MITSUBISHI ELECTRIC BUILDING TECHNO SERVICE CO LTD (JP)

B66B31/00; B66B23/12

JPH11165973A	1999-06-22
JP2006160494A	2006-06-22
JPS6036280A	1985-02-25
JPH03115084A	1991-05-16
JPS5836874A	1983-03-03
JPS5371488A	1978-06-24
JPS60167884A	1985-08-31
JP2017222447A	2017-12-21
US4232783A	1980-11-11
CN107580584A	2018-01-12

YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)

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