JPH0230500U

JPH0230500U -

Info

Publication number: JPH0230500U
Application number: JP10858088U
Authority: JP
Priority date: 1988-08-17
Filing date: 1988-08-17
Publication date: 1990-02-27

Description

[Brief explanation of the drawing]

第１図は本考案に係る折畳み式はしごの一実施
例を備えた建造物用ハツチの斜視図、第２図は折
畳み式はしごの斜視図、第３図はその要部の分解
した状態の拡大平面図、第４図は折畳み式はしご
を取り除いた状態の建造物用ハツチの斜視図であ
る。１…折畳み式はしご、２…建造物用ハツチ、３
…はしご単位部材、４…弾性部材、８…接地アー
ム、１５…足掛け部材。 Fig. 1 is a perspective view of a building hatch equipped with an embodiment of the folding ladder according to the present invention, Fig. 2 is a perspective view of the folding ladder, and Fig. 3 is an enlarged view of its main parts in an exploded state. The plan view, FIG. 4, is a perspective view of the building hatch with the folding ladder removed. 1... Folding ladder, 2... Building hatch, 3
... Ladder unit member, 4... Elastic member, 8... Grounding arm, 15... Footrest member.

Claims

[Claims for Utility Model Registration] 1. Consisting of a plurality of ladder unit members, each pair of these ladder unit members intersect with each other at the center and are pivotably supported for free rotation at this intersection, and the opposing ladder units In a folding ladder in which the ends of each member are pivoted freely and the left and right ladder unit members are connected by a footrest member, the ladder unit member is opened by friction with the ladder unit member via an elastic member. A folding ladder characterized by its pivot support. 2. The folding ladder according to claim 1, wherein the ladder unit member is provided with a grounding arm. 3. A hatch for buildings, in which the folding ladder according to claim 1 or 2 is built into a box.