Ladder

Abstract

A ladder relates to a ladder with the locking structure of the modified ladder platform or pedal and the locking structure between ladder frames, wherein the ladder platform is provided with hook locks for locking stairs; each hook lock is integrated by an assembling part and a hooking part; each ladder frame lock comprises a moving lock part, a fixed lock part and a moving lock base part; the moving lock part is provided with a moving lock hook lock part which can hook a fixed lock hook lock part; and the fixed lock part is provided with the fixed lock hook lock part which can hook the moving lock hook lock part. Therefore, the ladder with different ladder platform assembling structures and ladder frame locks can be formed; and the moving lock part can drive the moving lock hook lock part to open up or clamp under the action of a spring, thus hooking the fixed lock hook lock part. By installing reasonably the ladder platform assembling structure of the ladder of the invention, the part structure of the ladder platform assembling structure becomes more firm and substantial, parts become lighter, the reliability and safety of the ladder of the invention are ensured; the ladder becomes lighter; and the structure of the invention is easy, the manufacturing process is optimized, the production cost is effectively reduced and the industrial popularization and application are conveniently performed.

Description

technical field

[0001] This case belongs to the field of ladders, and relates to a ladder that improves the locking structure of the ladder platform or the pedal and the locking structure of the ladder frame and the ladder frame. Background technique

[0002] For ladders with foldable platforms, it is the constant pursuit of the industry to securely lock the platform and quickly fold the platform.

[0003] For the ladder with the main ladder and the auxiliary ladder, when the main ladder and the auxiliary ladder are folded, it needs to be safely locked and convenient for storage. This is the constant pursuit of the industry, but it still cannot meet the needs of the market.

[0004] For example, the disclosed Chinese patent 200420019380.5 is a structural improvement of a ladder chair. It is composed of a front frame, a middle frame, two connecting groups and a rear frame; The two sides of the front section; the middle frame is a frame body composed of two vertical bars and ...

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