Title:
LOOSENESS PREVENTION TOOL AND PASSENGER CONVEYOR
Document Type and Number:
Japanese Patent JP2023172691
Kind Code:
A
Abstract:
To provide a looseness prevention tool capable of stopping the looseness of a bolt which fixes a footstep of a passenger conveyor.SOLUTION: A bracket includes a first surface fixed to a bearing with a bolt and a second surface vertically disposed on the first surface. A plurality of recessed parts are formed on an inner peripheral surface of a rotation stopper part so as to be mounted on the bolt at every predetermined angle in a rotation direction of the bolt. When the looseness prevention tool is mounted on the bolt to face the second surface, a curved surface is formed on an outer peripheral surface of the rotation stopper part so as to abut on the second surface in the case where the bolt is rotated in a loosening direction by an angle larger than a predetermined angle.SELECTED DRAWING: Figure 2
Inventors:
TAKAHASHI TOSHIAKI
MATSUMOTO YOSHIFUMI
MATSUMOTO YOSHIFUMI
Application Number:
JP2022084665A
Publication Date:
December 06, 2023
Filing Date:
May 24, 2022
Export Citation:
Assignee:
HITACHI BUILDING SYST CO LTD
International Classes:
B66B23/12; F16B39/10
Attorney, Agent or Firm:
Patent Attorney Corporation Sunnext International Patent Office