JPH0279800U

JPH0279800U -

Info

Publication number: JPH0279800U
Application number: JP15820988U
Authority: JP
Priority date: 1988-12-05
Filing date: 1988-12-05
Publication date: 1990-06-19

Description

[Brief explanation of drawings]

第１図は本考案の一実施例たる梯子の要部の縦
断面図、第２図は同要部の斜視図、第３図はクラ
ンプ状態の説明図、第４図は梯子の正面図、第５
図は従来の梯子の正面図である。１……梯子本体、７……支持枠、８……支持杆
、１０……クランプ孔、１１……クランプ板、１
２……ばね、１３……枢支点、１４……クランプ
孔の内周縁、１６……保護枠。 Fig. 1 is a vertical cross-sectional view of the main part of a ladder which is an embodiment of the present invention, Fig. 2 is a perspective view of the main part, Fig. 3 is an explanatory diagram of the clamped state, and Fig. 4 is a front view of the ladder. Fifth
The figure is a front view of a conventional ladder. 1... Ladder body, 7... Support frame, 8... Support rod, 10... Clamp hole, 11... Clamp plate, 1
2... Spring, 13... Pivot point, 14... Inner peripheral edge of clamp hole, 16... Protective frame.

Claims

[Claims for Utility Model Registration] (1) Support frames are fixed to both sides of the lower end of the ladder body, and the ladder is attached to each of the support frames so as to be movable in the longitudinal direction of the ladder, and the lower end extends below the ladder body. A support rod for correcting ladder posture that can be protruded is provided, a clamp plate is provided whose base end is pivotally supported by the support frame, and a clamp hole formed in the center part is loosely fitted to the support rod, and the clamp plate and The ladder includes a spring interposed between the support frame and the spring that urges the clamp plate upward to wedge the inner peripheral edge of the clamp hole against the support rod. (2) The ladder according to claim 1, wherein a protective frame that projects laterally more than the clamp plate is fixed to the support frame at a position above the clamp plate.