Title:
STAIRCASE UNIT
Document Type and Number:
Japanese Patent JP2022014825
Kind Code:
A
Abstract:
To provide a staircase unit that can reduce the work of handling ventilation ducts at the construction site of equipment placed in the underfloor space and improve workability.SOLUTION: A staircase unit 10 incorporated in a unit building 1 in which a heat source machine 6 that requires intake and exhaust is installed in an underfloor space 5, includes: a staircase portion 12; a central wall 11 and an outer peripheral wall 13 that support the staircase portion 12; a below-staircase space 20 formed below the staircase portion 12 surrounded by the staircase 12, the central wall 11 and the outer peripheral wall 13; and a duct 30 placed in the below-staircase space 20. Further, in the duct 30, one end portion 30a is inserted into a first through hole 7 formed in a floor plate 3e and protrudes into the underfloor space 5, and another end portion 30b is inserted into an opening 17e of one end portion 17c of a connection duct 17 provided in a second outer peripheral portion 15 of the outer peripheral wall 13 and communicates with the outside of the below-staircase space 20.SELECTED DRAWING: Figure 2
Inventors:
NISHIZUKA TAKASHI
Application Number:
JP2020117408A
Publication Date:
January 20, 2022
Filing Date:
July 07, 2020
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
E04B1/348; E04F11/02; E04F17/04
Attorney, Agent or Firm:
Cleo International Law & Patent Office