JPS643000U

JPS643000U -

Info

Publication number: JPS643000U
Application number: JP9867287U
Authority: JP
Priority date: 1987-06-25
Filing date: 1987-06-25
Publication date: 1989-01-10

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例の蓋板を取り除い
た引つ張りばね取付部分の詳細斜視図、第２図は
従来例の全体側面図、第３図はその腕部部分の詳
細図、第４図はその引つ張りばね取付部分の詳細
斜視図である。２……開口枠、３……蓋板、４……梯子部材、
９……ばね取付金具、１０……引つ張りばね、１
１……挿通孔、１２……アダプタ、１２ａ，１２
ｂ……フツク部、１３……アダプタ仮固定プレー
ト、１４……切り欠き。 Fig. 1 is a detailed perspective view of the tension spring mounting part of an embodiment of this invention with the cover plate removed, Fig. 2 is an overall side view of the conventional example, and Fig. 3 is a detailed view of its arm portion. FIG. 4 is a detailed perspective view of the tension spring mounting portion. 2...Opening frame, 3...Lid plate, 4...Ladder member,
9... Spring mounting bracket, 10... Tension spring, 1
1...Insertion hole, 12...Adapter, 12a, 12
b...Hook part, 13...Adapter temporary fixing plate, 14...Notch.

Claims

[Scope of Utility Model Registration Claim] A cover plate that closes an opening frame in the ceiling, rotates around one end to open toward the indoor side, and has a ladder member attached to its top surface, and a cover plate that is erected on an inner wall at one end of the opening frame. a ring-shaped spring mounting bracket made of a flat plate having an adapter insertion hole; and a ring-shaped spring mounting bracket having hooks at both ends, one end of which is fixed to the adapter insertion hole of the spring mounting bracket so as to be rotatable in the vertical direction. an adapter; and a tension spring, one end of which is locked to a hook portion at the other end of the adapter, and the other end of which is locked to either one of the cover plate and the ladder member; A ceiling ladder device provided with an adapter temporary fixing plate having a notch into which a flat plate constituting a metal fitting can be press-fitted and removed, and capable of supporting the adapter from below during the press-fitting.