Title:
LOCKING MECHANISM AND BUILDING INSPECTION HOLE
Document Type and Number:
Japanese Patent JP2023091503
Kind Code:
A
Abstract:
To provide a lock mechanism capable of surely preventing careless rotation of an operation shaft and being easily mounted on an inner frame, and a building inspection hole provided with such a lock mechanism.SOLUTION: A lock mechanism 1 includes: an operation shaft 8 provided at a position opposed to an inner surface of an outer frame in an inner frame; a bearing 9 for rotatably mounting the operation shaft 8 to the inner frame; an operation receiving part 8E provided on the operation shaft 8 and receiving the rotating operation to the operation shaft 8; a locking part 10 provided on the operation shaft 8 and detachably locked to the outer frame by the rotation of the operation shaft 8; and a spring member 11 inserted between the bearing 9 and the operation shaft 8 and having a sandwiching part 11C sandwiching the operation shaft 8 therebetween.SELECTED DRAWING: Figure 7
Inventors:
NAGATANI ARIHIRO
ONOKI WATARU
ONOKI WATARU
Application Number:
JP2021206278A
Publication Date:
June 30, 2023
Filing Date:
December 20, 2021
Export Citation:
Assignee:
NAKA KOGYO KK
International Classes:
E04F19/08
Attorney, Agent or Firm:
Patent Attorney Corporation Taiyo International Patent Office
Previous Patent: File processing device, file processing method, and program
Next Patent: Operating device
Next Patent: Operating device