JPH0268024U

JPH0268024U -

Info

Publication number: JPH0268024U
Application number: JP14679788U
Authority: JP
Priority date: 1988-11-09
Filing date: 1988-11-09
Publication date: 1990-05-23
Anticipated expiration: 2003-01-28
Also published as: JPH053626Y2

Description

[Brief explanation of the drawing]

第１図は第５図における連結部分Ｄの詳細図、
第２図は同部分側面図、第３図は鉤金具を掛けた
伸長状態側面図、第４図は折畳開始時の鉤金具解
除状態を示す側面図、第５図は本考案を実施した
天井収納用折畳梯子の全体側面図、第６図、第７
図は従来の折畳梯子における折畳部分の係止構成
図である。Ａ，Ｂ，Ｃ…梯子単体、Ｄ…連結部分、ａ，ｂ
，ｃ…側板、ｄ，ｅ…衝合端面、４…折畳ヒンジ
、１１…ストツパー、１３…鉤金具、１４…押圧
バネ、１５…固定軸、１７…ガイド縁、１８…鉤
部、１９…操作縁、２０…係止爪、２１…引つ張
りバネ、２２…受金具、２３…係止突起。 Fig. 1 is a detailed view of the connecting part D in Fig. 5;
Figure 2 is a side view of the same part, Figure 3 is a side view of the extended state with the hook hook attached, Figure 4 is a side view showing the hook release state at the start of folding, and Figure 5 is a side view of the same part. Overall side view of the folding ladder for ceiling storage, Figures 6 and 7
The figure is a diagram showing the locking configuration of the folding portion of a conventional folding ladder. A, B, C...Ladder itself, D...Connection part, a, b
, c... Side plate, d, e... Abutting end surface, 4... Folding hinge, 11... Stopper, 13... Hook fitting, 14... Pressing spring, 15... Fixed shaft, 17... Guide edge, 18... Hook portion, 19... Operation edge, 20...locking claw, 21...tension spring, 22...receiving metal fitting, 23...locking protrusion.

Claims

[Claims for Utility Model Registration] 1. The end surfaces of the left and right side plates of each ladder unit constituting a folding ladder extended and disposed in an inclined state are connected by a folding hinge in an abutting state, and are bent in a downwardly convex state. A fixed shaft is provided protruding from the outer surface of the lower corner of one of the connecting parts of the folding ladder forming the connecting part, and a hook metal fitting having a hook part and an operating edge formed at the tip part is pivoted to the fixed shaft. In the folding ladder for ceiling storage in which a receiving metal fitting that engages with the hook of the hook fitting is fixed to the outer surface of the lower corner of the other single ladder, the hook fitting 13 has a rotation radius of the hook part 18 on the back side thereof. Smaller hook part 18
A locking pawl 20 is provided protrudingly adjacent to the holder, and a guide edge 17 is formed at the tip portion to guide the hook portion 18 to the receiving metal fitting 22, which will be described later. Fixed axis 1 in the pressed state
5, and the tension spring 21 is attached with both ends fixed to the rear end of the hook 13 and the side plate so as to rotate and bias the hook 18 in the opening direction. , a stopper 11 is provided to prevent the hook portion 18 of the hook fitting 13 from rotating in the opening direction, and a receiving fitting 22 with which the hook fitting 13 engages is arranged so as to prevent the hook from rotating when the end surfaces of the side plates of the ladder are in contact with each other. A folding ladder for ceiling storage, characterized in that it is fixed to a side plate on the rotation radius line of the metal fitting 13, and a locking protrusion 23 is provided adjacent to the receiving metal fitting 22 and on the rotation radius line of the locking pawl 20. . 2. A folding ladder for ceiling storage as set forth in claim 1 of the utility model registration claim, in which the operation parts of the left and right hook fittings are interconnected and integrated.