A quick-locking mechanism for a folding ladder

Abstract

This utility model provides a quick-locking mechanism for a folding ladder, relating to the field of folding ladder technology. It includes a footrest top frame, with two foldable ladder bodies positioned below the footrest top frame. An adjustable locking mechanism is shared on the outer sides of the two foldable ladder bodies. The adjustable locking mechanism includes a first magnetic bracket, a second magnetic bracket positioned on the outer side of the first magnetic bracket, and a fixing rod fixedly connected to the inner wall of the first magnetic bracket. This quick-locking mechanism, through the mutual cooperation of the footrest top frame, foldable ladder bodies, first magnetic bracket, second magnetic bracket, fixing rod, support rod, limiting block, magnetic block, limiting plate, positioning pin, positioning groove, and positioning opening, allows the second magnetic bracket to rotate around the fixing rod. Furthermore, by removing the limiting plate and positioning pin from the first and second magnetic brackets, the first and second magnetic brackets can fold along with the foldable ladder bodies, thus achieving the folding of the ladder structure composed of the footrest top frame and the foldable ladder bodies.

Description

Technical Field

[0001] This utility model relates to a quick locking mechanism, specifically a quick locking mechanism for a folding ladder, and belongs to the field of folding ladder technology. Background Technology

[0002] A folding ladder is a ladder that can be folded, stored, and unfolded. It consists of rungs and movable connecting parts, making it easy to carry and store. In scenarios where climbing is required, such as retrieving items from high places in daily life, construction and renovation, power and telecommunications maintenance, and warehouse logistics shelving, a locking mechanism is needed. It can quickly fix the ladder to prevent accidental folding during use, ensuring personnel safety and smooth operation.

[0003] The existing utility model patent with authorization announcement number CN221236670U discloses a folding ladder. With two symmetrically distributed handrails, it provides balanced and stable support, making climbing safer and more reliable for workers. Fluorescent blocks are fixedly connected to the surface of the footrests, providing visibility in dim environments and ensuring workers can clearly see the ladder's position and edges, reducing the risk of accidental injury. The presence of anti-slip mats provides stable standing, helping workers maintain a stable posture and reducing the risk of falls. These anti-slip mats can be designed with drainage holes or grooves to accelerate water removal and prevent water accumulation on the footrests, thereby reducing the risk of slipping.

[0004] While the aforementioned technical solutions can reduce the risk of slipping and improve the safety of folding ladders through various means, they lack the ability to adjust the opening angle of the folding ladder and are deficient in locking structures for this purpose. This limits the flexibility of adjusting the locking mechanism and consequently restricts the application scenarios of the folding ladder. Therefore, a quick-locking mechanism for folding ladders is proposed here. Utility Model Content

[0005] This utility model proposes a quick locking mechanism for folding ladders to solve the problem that the lack of a locking structure for adjusting the opening and closing angle of folding ladders in the prior art results in a limited space for flexible adjustment of the locking structure when applied to folding ladders, which in turn limits the application scenarios of folding ladders.

[0006] This utility model is achieved through the following technical solution: a quick locking mechanism for a folding ladder, including a foot-operated top frame, with two foldable ladder bodies arranged below the foot-operated top frame, and an adjustable locking mechanism arranged on the outer sides of the two foldable ladder bodies.

[0007] The adjustable locking mechanism includes a first magnetic chuck, a second magnetic chuck on the outer side of the first magnetic chuck, a fixing rod fixedly connected to the inner wall of the first magnetic chuck, a support rod fixedly connected to the front of each of the two foldable ladder bodies, a limit plate on the outer side of the first magnetic chuck, two positioning pins fixedly connected to the back of the limit plate, limit blocks inside the first and second magnetic chucks, a magnetic block fixedly connected to the bottom surface of each limit block, several identical positioning grooves on the inner bottom wall of the first and second magnetic chucks, and several identical positioning openings on the upper surface of the first and second magnetic chucks.

[0008] Specifically, the inner wall of the second magnetic chuck is rotatably connected to the outer surface of the fixing rod; the outer surface of one of the support rods is slidably connected to the interior of the first magnetic chuck; the outer surface of the other support rod is slidably connected to the interior of the second magnetic chuck; the back of the limiting plate is in contact with the front of the first magnetic chuck and the front of the second magnetic chuck respectively; the outer surface of one of the positioning pins is in contact with the inner wall of the first magnetic chuck; the outer surface of the other positioning pin is in contact with the inner wall of the second magnetic chuck; the outer surface of each support rod is in contact with the outer surface of the limiting block; the outer surface of each limiting block is in contact with the inner wall of the positioning groove and the inner wall of the positioning opening respectively; the outer surface of each magnetic block is in contact with the inner wall of the positioning groove; a first anti-slip pad is fixedly connected to the upper surface of the footrest; and several identical first anti-slip protrusions are fixedly connected to the upper surface of the first anti-slip pad.

[0009] Furthermore, each of the foldable ladder bodies is provided with a base frame underneath, and the outer surface of each base frame is rotatably connected to the inner wall of the foldable ladder body.

[0010] Each of the base frames is fixedly connected to a second anti-slip pad on its bottom surface, and each of the second anti-slip pads is fixedly connected to a plurality of identical second anti-slip protrusions on its bottom surface.

[0011] Preferably, a first anti-slip sleeve is fixedly connected to the outer surface of the limiting plate, and a plurality of identical third anti-slip protrusions are fixedly connected to the outer surface of the first anti-slip sleeve.

[0012] Furthermore, a second anti-slip sleeve is fixedly connected to the outer surface of each of the limiting blocks, and three anti-slip grooves are formed on the outer surface of each second anti-slip sleeve.

[0013] This utility model provides a quick-locking mechanism for a folding ladder, which has the following beneficial effects:

[0014] This folding ladder quick-locking mechanism utilizes the interaction of a foot-operated top frame, a foldable ladder body, a first magnetic bracket, a second magnetic bracket, a fixed rod, a support rod, a limiting block, a magnetic block, a limiting plate, a positioning pin, a positioning groove, and a positioning port. The second magnetic bracket can rotate around the fixed rod, allowing the limiting plate and positioning pin to be pulled away from the first and second magnetic brackets. This enables the first and second magnetic brackets to fold along with the foldable ladder body, thus achieving the folding of the ladder structure composed of the foot-operated top frame and the foldable ladder body. The first and second magnetic brackets can respectively lock relative to two... When the support rod slides and the limiting block is inserted into a positioning port and positioning slot, the magnetic block can magnetically attract the first magnetic suction frame or the second magnetic suction frame. In this way, the two limiting blocks can limit the corresponding support rod at different positions, thereby fixing the two foldable ladder bodies at different opening and closing angles. This increases the adjustability of the folding ladder locking structure and the application scenarios of the folding ladder. It avoids the problem that the lack of a locking structure to adjust the opening and closing angle of the folding ladder results in a limited space for flexible adjustment after the locking structure is applied to the folding ladder, which in turn limits the application scenarios of the folding ladder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a quick-locking mechanism for a folding ladder according to the present invention;

[0016] Figure 2 This is a schematic diagram of the foldable ladder body structure from below.

[0017] Figure 3 This is a schematic diagram of the first magnetic chuck structure of this utility model;

[0018] Figure 4 This is a bottom view of the first magnetic chuck structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the second magnetic chuck structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the limiting block structure of this utility model;

[0021] Figure 7 This is a side view of the limiting plate structure of this utility model;

[0022] Figure 8 This is a schematic diagram of the base frame structure of this utility model.

[0023] Explanation of reference numerals in the attached figures

[0024] 1. Footrest top frame; 2. Foldable ladder body;

[0025] 3. Adjustable locking mechanism; 301. First magnetic suction frame; 302. Second magnetic suction frame; 303. Fixing rod; 304. Support rod; 305. Limiting block; 306. Magnetic block; 307. Limiting plate; 308. Positioning pin; 309. Positioning groove; 310. Positioning port;

[0026] 4. First anti-slip pad; 5. First anti-slip protrusion; 6. Base frame; 7. Second anti-slip pad; 8. Second anti-slip protrusion; 9. First anti-slip sleeve; 10. Third anti-slip protrusion; 11. Second anti-slip sleeve; 12. Anti-slip groove. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0028] Please see Figures 1 to 8 This utility model embodiment provides a quick locking mechanism for a folding ladder, including a footrest 1. Two foldable ladder bodies 2 are arranged below the footrest 1. An adjustable locking mechanism 3 is arranged on the outer side of the two foldable ladder bodies 2. The adjustable locking mechanism 3 includes a first magnetic suction frame 301 and a second magnetic suction frame 302 arranged on the outer side of the first magnetic suction frame 301. A first anti-slip pad 4 is fixedly connected to the upper surface of the footrest 1. A plurality of identical first anti-slip protrusions 5 are fixedly connected to the upper surface of the first anti-slip pad 4. By setting the first anti-slip protrusions 5, the anti-slip properties of the upper surface of the first anti-slip pad 4 can be increased. By setting the first anti-slip pad 4 and the first anti-slip protrusions 5, the anti-slip properties of the upper surface of the footrest 1 can be increased together.

[0029] Please refer to this carefully. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8 The inner wall of the first magnetic suction frame 301 is fixedly connected to a fixing rod 303. The inner wall of the second magnetic suction frame 302 is rotatably connected to the outer surface of the fixing rod 303. The front of each of the two foldable ladder bodies 2 is fixedly connected to a support rod 304. The outer surface of one support rod 304 is slidably connected to the inside of the first magnetic suction frame 301, and the outer surface of the other support rod 304 is slidably connected to the inside of the second magnetic suction frame 302. A base frame 6 is provided under each foldable ladder body 2. The outer surface of each base frame 6 is rotatably connected to the inner wall of the foldable ladder body 2. By setting the base frame 6, it can rotate relative to the foldable ladder body 2, thereby stably supporting the two foldable ladder bodies 2 with different opening degrees.

[0030] Please refer to this carefully. Figure 2 , Figure 3 , Figure 7 and Figure 8 A limiting plate 307 is provided on the outer side of the first magnetic suction frame 301. The back of the limiting plate 307 contacts the front of the first magnetic suction frame 301 and the front of the second magnetic suction frame 302 respectively. Two positioning pins 308 are fixedly connected to the back of the limiting plate 307. The outer surface of one positioning pin 308 contacts the inner wall of the first magnetic suction frame 301, and the outer surface of the other positioning pin 308 contacts the inner wall of the second magnetic suction frame 302. A second anti-slip pad 7 is fixedly connected to the bottom surface of each base frame 6. Several identical second anti-slip protrusions 8 are fixedly connected to the bottom surface of each second anti-slip pad 7. By setting the second anti-slip protrusions 8, the anti-slip performance of the bottom surface of the second anti-slip pad 7 can be increased. By setting the second anti-slip pad 7 and the second anti-slip protrusions 8, the anti-slip performance of the bottom surface of the base frame 6 can be increased together.

[0031] Please refer to this carefully. Figure 1 , Figure 3 , Figure 6 and Figure 7 Both the interior of the first magnetic suction cup 301 and the interior of the second magnetic suction cup 302 are provided with limiting blocks 305. The outer surface of each support rod 304 is in contact with the outer surface of the limiting block 305. The bottom surface of each limiting block 305 is fixedly connected with a magnetic block 306. The outer surface of the limiting plate 307 is fixedly connected with a first anti-slip sleeve 9. The outer surface of the first anti-slip sleeve 9 is fixedly connected with several identical third anti-slip protrusions 10. By setting the third anti-slip protrusions 10, the anti-slip property of the outer surface of the first anti-slip sleeve 9 can be increased. By setting the first anti-slip sleeve 9 and the third anti-slip protrusions 10, the anti-slip property of the outer surface of the limiting plate 307 can be increased together, thereby facilitating stable gripping of the limiting plate 307 and insertion / removal of the positioning pin 308.

[0032] Please refer to this carefully. Figure 3 , Figure 4 , Figure 5 and Figure 6The inner bottom wall of the first magnetic chuck 301 and the inner bottom wall of the second magnetic chuck 302 are provided with several identical positioning grooves 309. The outer surface of each magnetic block 306 is in contact with the inner wall of the positioning groove 309. The upper surface of the first magnetic chuck 301 and the upper surface of the second magnetic chuck 302 are provided with several identical positioning openings 310. The outer surface of each limiting block 305 is in contact with the inner wall of the positioning groove 309 and the inner wall of the positioning opening 310, respectively. The outer surface of each limiting block 305 is fixedly connected with a second anti-slip sleeve 11. The outer surface of each second anti-slip sleeve 11 is provided with three anti-slip grooves 12. By setting the anti-slip grooves 12, the anti-slip effect of the outer surface of the second anti-slip sleeve 11 can be increased. By setting the second anti-slip sleeve 11 and the anti-slip grooves 12, the anti-slip property of the outer surface of the limiting block 305 can be increased together.

[0033] In use, the following steps are taken: First, the two limiting blocks 305 are removed from the first magnetic frame 301 and the second magnetic frame 302, respectively. Then, according to the desired opening angle of the two foldable ladder bodies 2, the two foldable ladder bodies 2 are moved closer or further apart. Simultaneously, the two support rods 304 slide within the first magnetic frame 301 and the second magnetic frame 302, respectively, until the two foldable ladder bodies 2 reach a suitable opening angle and can stand stably. Then, the two limiting blocks 305 are reinserted into the positioning grooves 309 and positioning openings 310 on the outer side of the support rods 304 on each foldable ladder body 2. The magnetic attraction between the magnetic block 306 and the first magnetic frame 301 or the second magnetic frame 302 increases the stability of the corresponding limiting block 305 within the first magnetic frame 301 or the second magnetic frame 302. Thus, the two limiting blocks 305 can limit the corresponding support rods 304 at different positions. The ability to fix two foldable ladder bodies 2 at different opening angles increases the adjustability of the folding ladder's locking structure and expands its application scenarios. The smaller opening angle of the two foldable ladder bodies 2 is suitable for narrower spaces, while the larger opening angle is suitable for larger spaces and provides better support stability. When the entire folding ladder needs to be folded together, the limiting plate 307 and the positioning pin 308 are pulled away from the first magnetic suction frame 301 and the second magnetic suction frame 302. As the second magnetic suction frame 302 rotates around the fixing rod 303, the first magnetic suction frame 301 and the second magnetic suction frame 302 fold together towards the upper center position. The design of the entire folding ladder's quick locking mechanism effectively solves the problem that the lack of a locking structure to adjust the opening angle of the folding ladder limits the space for flexible adjustment of the locking structure, thus limiting the application scenarios of the folding ladder.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick locking mechanism for folding ladders comprising a kick-over head (1) characterised in that: Two foldable ladder bodies (2) are provided below the footrest (1), and an adjustable locking mechanism (3) is provided on the outer side of the two foldable ladder bodies (2). The adjustable locking mechanism (3) includes a first magnetic suction frame (301), a second magnetic suction frame (302) is provided on the outside of the first magnetic suction frame (301), a fixing rod (303) is fixedly connected to the inner wall of the first magnetic suction frame (301), a support rod (304) is fixedly connected to the front of each of the two foldable ladder bodies (2), a limit plate (307) is provided on the outside of the first magnetic suction frame (301), and two positioning pins (308) are fixedly connected to the back of the limit plate (307). Limiting blocks (305) are provided inside the first magnetic chuck (301) and the second magnetic chuck (302). A magnetic block (306) is fixedly connected to the bottom surface of each limiting block (305). Several identical positioning grooves (309) are opened on the inner bottom wall of the first magnetic chuck (301) and the inner bottom wall of the second magnetic chuck (302). Several identical positioning holes (310) are opened on the upper surface of the first magnetic chuck (301) and the upper surface of the second magnetic chuck (302).

2. The quick-locking mechanism for a folding ladder according to claim 1, characterized in that: The inner wall of the second magnetic cassette (302) is rotatably connected to the outer surface of the fixing rod (303). The outer surface of one of the support rods (304) is slidably connected to the interior of the first magnetic cassette (301), and the outer surface of the other support rod (304) is slidably connected to the interior of the second magnetic cassette (302). The back of the limiting plate (307) is in contact with the front of the first magnetic cassette (301) and the front of the second magnetic cassette (302), respectively. The outer surface of one of the positioning pins (308) is in contact with the inner wall of the first magnetic cassette (301), and the outer surface of the other positioning pin (308) is in contact with the inner wall of the first magnetic cassette (301). The outer surface of the support rod (308) is in contact with the inner wall of the second magnetic suction frame (302). The outer surface of each support rod (304) is in contact with the outer surface of the limiting block (305). The outer surface of each limiting block (305) is in contact with the inner wall of the positioning groove (309) and the inner wall of the positioning port (310). The outer surface of each magnetic block (306) is in contact with the inner wall of the positioning groove (309). The upper surface of the footrest (1) is fixedly connected with a first anti-slip pad (4). The upper surface of the first anti-slip pad (4) is fixedly connected with several identical first anti-slip protrusions (5).

3. The quick-locking mechanism for a folding ladder according to claim 1, characterized in that: Each of the foldable ladder bodies (2) is provided with a base frame (6) at its bottom, and the outer surface of each base frame (6) is rotatably connected to the inner wall of the foldable ladder body (2).

4. The quick-locking mechanism for a folding ladder according to claim 3, characterized in that: Each of the base frames (6) has a second anti-slip pad (7) fixedly connected to its bottom surface, and each of the second anti-slip pads (7) has a number of identical second anti-slip protrusions (8) fixedly connected to its bottom surface.

5. The quick-locking mechanism for a folding ladder according to claim 1, characterized in that: The outer surface of the limiting plate (307) is fixedly connected to a first anti-slip sleeve (9), and the outer surface of the first anti-slip sleeve (9) is fixedly connected to a plurality of identical third anti-slip protrusions (10).

6. The quick-locking mechanism for a folding ladder according to claim 1, characterized in that: Each of the limiting blocks (305) has a second anti-slip sleeve (11) fixedly connected to its outer surface, and each of the second anti-slip sleeves (11) has three anti-slip grooves (12) on its outer surface.

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