Ladder with side face locking structure

By designing a side locking structure on the ladder and using a pivotable wrench and push rod to fix the ladder frame, the stability and safety issues of folding ladders when used on uneven support surfaces are solved, achieving higher safety in use.

CN224149480UActive Publication Date: 2026-04-21ZHEJIANG KANGQIAN IND & TRADE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG KANGQIAN IND & TRADE CO LTD
Filing Date
2025-05-06
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing folding ladders lack stability and safety when used on uneven support surfaces, leading to unsafe use.

Method used

A ladder with a side-locking structure has been designed, including a pivotable wrench and push rod, which secures the ladder frame through the side-locking structure, improving stability and safety.

Benefits of technology

The side-locking structure enhances the stability and safety of the ladder on uneven support surfaces.

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Abstract

The ladder with the side face locking structure comprises a pair of ladder assemblies, the top ends of the ladder assemblies intersect, each ladder assembly comprises a pair of parallel rails and a plurality of pedals arranged between the pair of rails at intervals, and the side face locking structure is arranged at the connecting position of at least one pedal and the rails. The side face locking structure comprises a base fixed to the side, away from the pedal, of the track, a wrench connected with the base in a pivoted mode and a push rod penetrating through the base and connected with the wrench. The side locking structure is used for fixing the ladder frame, so that the stability and safety of the ladder can be improved.
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Description

Technical Field

[0001] This utility model relates to the field of folding ladder technology, specifically to a ladder with a side locking structure. Background Technology

[0002] Folding ladders are lightweight and easy to store, making them a common household tool.

[0003] Common folding ladders are A-frame ladders with a triangular structure. This structure forms a triangle with the ground, providing good stability. However, sometimes it is necessary to use the ladder on surfaces that are not level, such as the ground or other supporting surfaces. Positioning the ladder on such uneven surfaces without taking further precautions can make the ladder unsafe. Summary of the Invention

[0004] Therefore, it is necessary to propose a ladder with a side-locking structure that can improve stability and safety.

[0005] This utility model provides a ladder with a side locking structure, including a pair of ladder frames that intersect at the top. Each ladder frame includes a pair of parallel rails and a plurality of foot pedals spaced apart between the pair of rails. At least one foot pedal is provided with a side locking structure at the connection point with the rail. The side locking structure includes a base fixed to the side of the rail opposite to the foot pedal, a wrench pivotally connected to the base, and a push rod passing through the base and connected to the wrench.

[0006] Preferably, the wrench has a locked state and an unlocked state. When the wrench is in the locked state, the push rod is inserted into the rail, and when the wrench is in the unlocked state, the push rod is disengaged from the rail.

[0007] Preferably, the wrench includes a first part connecting the base and a second part extending from the first part, with a fixing member between the first part and the second part, and a push rod connecting to the fixing member and moving linearly toward or away from the track when the wrench is rotated.

[0008] Preferably, the first part of the wrench is provided with a guide groove.

[0009] Preferably, the second part of the wrench has anti-slip texture.

[0010] Preferably, the number of side locking structures is four.

[0011] Preferably, the side locking structure is located on both sides of the top footrest of the ladder.

[0012] The ladder with a side-locking structure provided by this utility model includes a pair of ladder frames intersecting at the top. Each ladder frame includes a pair of parallel rails and a plurality of footrests spaced apart between the pair of rails. At least one footrest is provided with a side-locking structure at its connection with a rail. The side-locking structure includes a base fixed to the side of the rail opposite to the footrest, a wrench pivotally connected to the base, and a push rod passing through the base and connected to the wrench. Using the side-locking structure to fix the ladder frame can improve the stability and safety of the ladder. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 A schematic diagram of a ladder with a side-locking structure provided in one embodiment;

[0015] Figure 2 A schematic diagram of the side locking structure of a ladder with a side locking structure provided in one embodiment; and

[0016] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the side locking structure. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] like Figures 1-3As shown, this utility model provides a ladder 100 with a side locking structure, including a pair of ladder frames 10 intersecting at the top. Each ladder frame 10 includes a pair of parallel rails 11 and a plurality of foot pedals 12 spaced apart between the pair of rails 11. At least one foot pedal 12 is provided with a side locking structure 20 at the connection between it and the rail 11. The side locking structure 20 includes a base 21 fixed to the side of the rail 11 opposite to the foot pedal 12, a wrench 22 pivotally connected to the base 21, and a push rod 23 passing through the base 21 and connected to the wrench 22.

[0020] The wrench 22 has a locked state and an unlocked state. When the wrench 22 is in the locked state, the push rod 23 is inserted into the rail 11. When the wrench 22 is in the unlocked state, the push rod 23 is disengaged from the rail 11. Specifically, the wrench 22 includes a first part 221 connecting to the base 21 and a second part 222 extending from the first part 221. A fixing member 223 is provided between the first part 221 and the second part 222. The push rod 23 is connected to the fixing member 223 and moves linearly toward or away from the rail 11 when the wrench 22 rotates.

[0021] Preferably, the first part 221 of the wrench 22 is provided with a guide groove 220, and the second part 22 of the wrench 22 is provided with anti-slip texture 224.

[0022] In this embodiment, there are four side locking structures 20, located on both sides of the two footrests 12 at the top of the ladder 100.

[0023] The ladder with a side-locking structure provided by this utility model includes a pair of ladder frames intersecting at the top. Each ladder frame includes a pair of parallel rails and a plurality of footrests spaced apart between the pair of rails. At least one footrest is provided with a side-locking structure at its connection with a rail. The side-locking structure includes a base fixed to the side of the rail opposite to the footrest, a wrench pivotally connected to the base, and a push rod passing through the base and connected to the wrench. Using the side-locking structure to fix the ladder frame can improve the stability and safety of the ladder.

[0024] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ladder having a side lock structure, comprising a pair of ladder frames intersecting at a top end, each of the ladder frames comprising a pair of parallel rails and a plurality of steps spaced between the pair of rails, characterized in that: At least one of the foot pedals is provided with a side locking structure at the connection point with the track. The side locking structure includes a base fixed to the side of the track opposite to the foot pedal, a wrench pivotally connected to the base, and a push rod passing through the base and connected to the wrench.

2. The ladder with side lock structure according to claim 1, characterized in that, The wrench has a locked state and an unlocked state. When the wrench is in the locked state, the push rod is inserted into the track. When the wrench is in the unlocked state, the push rod is disengaged from the track.

3. The ladder with side lock structure according to claim 2, characterized in that, The wrench includes a first part connected to the base and a second part extending from the first part, with a fixing member between the first part and the second part. The push rod is connected to the fixing member and moves in a straight line toward or away from the track when the wrench is rotated.

4. The ladder with side lock structure according to claim 3, characterized in that, The first part of the wrench is provided with a guide groove.

5. The ladder with a side locking structure according to claim 3, characterized in that, The second part of the wrench has anti-slip texture.

6. The ladder with side lock structure according to claim 1, wherein The number of side locking structures is four.

7. The ladder with side lock structure according to claim 1, wherein The side locking structure is located on both sides of the top footrest of the ladder.