JPS6340498U

JPS6340498U -

Info

Publication number: JPS6340498U
Application number: JP13410686U
Authority: JP
Priority date: 1986-09-01
Filing date: 1986-09-01
Publication date: 1988-03-16
Also published as: JPH0435519Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係る二連梯子の制動装置の実
施例を示す要部斜視図、第２図はその支柱の外側
壁の一部を切欠した断面図、第３図は本考案の実
施例の全体構造を示す斜視図、第４図はその使用
状態例を示す説明図、第５図は従来の二連梯子の
一例を示す斜視図、第６図はその従来例の二連梯
子の一部を拡大して示す斜視図である。１…支柱、１Ａ…支柱の側壁、１Ｂ…支柱の外
側壁、２…支柱の凹溝、４…固定梯子、５…竪桟
、５Ａ…竪桟の側壁、６…竪桟の凹溝、８…可動
梯子、９…ブラケツト、１０…係止片、１１…軸
ピン、１２…バネ、１４…ストツパーピン、１５
…滑車、１６…ロープ、１７…レバー、１８…軸
、１９…ロツク板。 Fig. 1 is a perspective view of essential parts showing an embodiment of the braking device for a double ladder according to the present invention, Fig. 2 is a sectional view with a part of the outer wall of the support column cut away, and Fig. 3 is an implementation of the present invention. FIG. 4 is an explanatory diagram showing an example of its use, FIG. 5 is a perspective view of an example of a conventional double ladder, and FIG. 6 is a perspective view of the conventional double ladder. It is a perspective view which expands and shows a part. 1... Column, 1A... Side wall of column, 1B... Outer wall of column, 2... Concave groove of column, 4... Fixed ladder, 5... Vertical bar, 5A... Side wall of vertical bar, 6... Concave groove of vertical bar, 8 ... Movable ladder, 9... Bracket, 10... Locking piece, 11... Shaft pin, 12... Spring, 14... Stopper pin, 15
...pulley, 16... rope, 17... lever, 18... shaft, 19... lock plate.

Claims

[Scope of utility model registration request]

A fixed ladder 4 having columns 1 having grooves 2 on the inside and facing each other, and a movable ladder 8 having vertical bars 5 having grooves 6 on the outside on both sides. There are vertical bars 5 in the concave grooves 2 of the pillars, respectively.
A pulley 15 is supported on a bracket 9 attached to the side wall 1A of the column, and one end of a lifting rope 16 stretched over the pulley 15 is connected to the movable ladder 8 so as to be movable up and down. In a double ladder connected to a ladder, the bracket 9 is attached to the side wall 1A of the column by a shaft pin 11 so as to be able to swing up and down, and a stopper pin 14 that restricts the swing range and a return spring 12 are attached. A locking piece 10 protruding outward from the side wall 1A of the column is connected to the bracket 9, and a lever 1 is placed on the locking piece 10.
7, one end of which is attached to a shaft 18 that rotatably passes through the outer wall 1B of the column, and is further attached to a concave groove 2 of the column.
A lock plate 19 attached to the shaft 18 inserted therein is placed in pressure contact with the side wall 5A of the vertical bar 5 fitted in the concave groove 2 of the column so that it can be braked, thereby preventing the lifting rope 16 from rising. The lock plate 19 is interlocked with the lever 17 as the bracket 9 responds by pulling in the direction.
A braking device for a double ladder, characterized in that the braking is released away from the side wall 5A of the vertical rung.