Title:
DOOR CLOSER
Document Type and Number:
Japanese Patent JP2023117056
Kind Code:
A
Abstract:
To provide a door closer capable of easily securing necessary closing force.SOLUTION: The door closer includes: a first spring 17 that deforms elastically when the door opens and restores to generate a closing force when the door closes; a second spring 18 that is placed separately from the first spring 17, and deforms elastically when the door opens and restores to generate a closing force when the door closes; and a third spring 19 that is placed separate from the first spring 17 and the second spring 18 and deforms elastically when the door opens, and restores when the door closes to generate a closing force. When the door opens, cams 13a and 13b elastically deform the first spring 17, and a piston 12 elastically deforms the second spring 18 and the third spring 19.SELECTED DRAWING: Figure 1
Inventors:
NAKAMAE TOMOHIRO
Application Number:
JP2022019537A
Publication Date:
August 23, 2023
Filing Date:
February 10, 2022
Export Citation:
Assignee:
RYOBI LTD
International Classes:
E05F3/10
Attorney, Agent or Firm:
Tokuya Iwata
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