Foldable step ladder
By designing a foldable ladder, using multiple rectangular panels spliced together and a V-shaped folding mechanism, the problems of large space occupation and safety hazards of existing inflatable swimming pool ladders are solved, achieving a portable, stable and safe use effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏新智元户外用品有限公司
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-05
Smart Images
Figure CN224326240U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of auxiliary equipment for inflatable swimming pools, specifically, to a foldable ladder. This ladder integrates steps, a slide, and a support structure, and is characterized by its foldability, portability, and multifunctionality, making it particularly suitable for use in home and commercial outdoor inflatable swimming pools. Background Technology
[0002] With the improvement of people's living standards, inflatable pools, as a convenient and economical outdoor water recreation facility, are becoming increasingly popular among families. However, when using inflatable pools, users need a safe and convenient ladder to enter the pool. Although some ladders exist on the market, they have many problems:
[0003] 1. Most existing ladders are fixed structures that are either not foldable or fold incompletely. Traditional ladders often use metal frames or rigid plastic structures, and even when folded, they are still quite large, making them difficult to store with inflatable pools. Their large size occupies a significant amount of space during transportation and storage, causing inconvenience to users. For home users, limited living space makes it difficult to accommodate bulky ladders, resulting in difficulties in properly storing them when not in use.
[0004] 2. Some of the ladders are poorly designed and prone to swaying and tilting during use, posing safety hazards. Especially when users are entering or leaving the pool, the instability of the ladders could cause falls and injuries, affecting both user experience and safety.
[0005] To address the aforementioned issues, there is an urgent need to develop a foldable ladder that can achieve truly compact folding, reliable connection, safe use, and good waterproofing. Utility Model Content
[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a foldable ladder that is structurally reasonable, safe to use, and easy to store.
[0007] This utility model is implemented by providing a foldable climbing ladder, including a foldable ladder body and a foldable support assembly;
[0008] The main body of the folding staircase consists of at least two rectangular panels that are sequentially spliced together along the width direction. Each pair of adjacent rectangular panels is folded back and forth to form a step unit. The main body of the folding staircase contains at least two consecutively arranged step units. Each rectangular panel of the folding staircase can be folded along its splicing lines, which greatly reduces the storage volume and makes it easy to store and transport with an inflatable swimming pool, saving living space for home users.
[0009] The folding support assembly includes a folding enclosure structure, a folding front guard mechanism, and a folding support mechanism. The folding front guard mechanism and the folding support mechanism are respectively housed within the folding enclosure. By housing the folding front guard mechanism and the folding support mechanism within the folding enclosure, three-dimensional support and positioning are achieved, solving the problem of instability of the ladder, improving the stability of the ladder during use, reducing the possibility of swaying and tilting, and ensuring the safety of users. Adults or children can easily step on and play with it.
[0010] The folding enclosure structure consists of two parallel side support plates, a rear limiting support cloth connecting the rear edges of the side support plates on both sides, and a front limiting support cloth connecting the lower front edges of the side support plates on both sides, which together form an accommodating space. The folding enclosure structure forms an accommodating space, providing a foundation for storing and supporting the folding front guard mechanism and the folding support mechanism, enhancing the overall structural stability of the ladder, and providing reliable support for the folding and unfolding of other components.
[0011] The folding front panel mechanism consists of two symmetrically arranged support plates that fold backward in the middle to form a V-shaped structure. The outer edges of the two support plates are fixed to the front sides of the side support plates on both sides. Each support plate has a stepped arrangement of resting notches. The area formed by the resting notches between the symmetrical support plates on both sides is the step resting area, and the area formed between the tops of the support plates on both sides serves as the resting area for the next step. The V-shaped folding front panel mechanism and the step positioning groove formed by the stepped arrangement of resting notches effectively position the main body of the folding ladder, improve the stability of the ladder, reduce swaying and tilting, and ensure the safe use of the user.
[0012] The folding support mechanism consists of two intermediate support plates that fold forward in the middle. The outer edges of the two intermediate support plates are fixed to the rear sides of the side support plates on both sides, and their top planes form the top step positioning area. Each step unit of the folding staircase body is sequentially fitted into the step resting area, the next step resting area, and the top step positioning area. It cooperates with the step resting area of the folding front mechanism to provide stable support for the folding staircase body.
[0013] Furthermore, the rectangular plate, support plate, side support plate and middle support plate are all covered with a PVC composite layer, and the rear limiting support cloth and the front limiting support cloth are made of PVC mesh cloth.
[0014] The PVC composite layer and the PVC mesh are connected by hot-melt welding to form a continuous sealed connection. The upper and lower PVC composite layers at the edges of each rectangular plate are fused together by hot-melt welding. The PVC composite layers at the connection of adjacent rectangular plates are fused together by hot-melt welding. The PVC composite layers at the edges of the support plate, side support plate and middle support plate are sealed by hot-melt welding.
[0015] Furthermore, the PVC composite layer on the outer side of the two support plates is heat-fused to the PVC composite layer on the front side of the corresponding side support plate.
[0016] The PVC composite layer on the outer side of the two intermediate support plates is heat-fused to the PVC composite layer on the rear side of the corresponding side support plate.
[0017] Furthermore, the bottom surface of the rectangular plate at the front end of the folding ladder body is provided with a first Velcro strap, which matches and connects to the outer surface of the front limiting support cloth; the end of the folding ladder body is connected to an extension plate, which is connected to the outer surface of the rear limiting support cloth through a second Velcro strap, making it convenient for users to fold and unfold the ladder, thus improving the ease of use.
[0018] The first Velcro fastener includes a first mating surface on the bottom surface of the rectangular plate and a second mating surface on the front limiting support fabric. The first mating surface and the second mating surface are either hook surfaces or loop surfaces of the Velcro fastener, and their mating types are opposite. The first Velcro fastener improves the firmness of the connection between the folding ladder body and the front limiting support fabric, preventing loosening during use.
[0019] The second Velcro includes a third mating surface on the extension plate and a fourth mating surface on the rear limiting support cloth. The third mating surface and the fourth mating surface are either hook surfaces or loop surfaces of the Velcro, and their mating types are opposite. The setting of the second Velcro improves the reliability of the connection between the extension plate and the rear limiting support cloth and enhances the overall stability of the climbing ladder.
[0020] Furthermore, the front edge of the side support plate is a 30°-60° inclined slope, with an arc-shaped flexible guard edge at the upper edge of the slope. This guard edge is integrally formed with the PVC composite layer of the side support plate. The edges of ladders can pose safety hazards, easily scratching users. Traditional ladders may lack edge protection. This invention, by setting an inclined slope and an arc-shaped flexible guard edge, improves safety during use, reduces the risk of users being scratched, and enhances both comfort and safety.
[0021] Furthermore, the foldable ladder also includes a transition platform assembly, a slide board, a pool support plate, and a bracing plate; the transition platform assembly includes a transition plate, the front end of which is connected to the highest step unit of the foldable ladder body via a third Velcro fastener; the upper end of the slide board is heat-fused to the rear end of the transition plate; the upper end of the pool support plate is heat-fused to the bottom surface of the transition plate; the lower end of the bracing plate is heat-fused to the lower end of the pool support plate, and the upper end is connected to the middle of the slide board via a fourth Velcro fastener; thus, the ladder can not only be used to climb into the pool, but also as a slide, increasing the fun of use.
[0022] Each component is covered with a PVC composite layer, and the joints are connected by hot melt welding or Velcro.
[0023] Furthermore, the surface of the PVC composite layer of the connecting plate is provided with a fifth mating surface of the third hook and loop fastener, and the corresponding position of the PVC composite layer of the step unit facade is provided with a sixth mating surface of the third hook and loop fastener that matches the fifth mating surface; wherein, the fifth mating surface and the sixth mating surface are respectively one of the hook surface or the loop surface of the hook and loop fastener, and the two mating types are opposite; the setting of the third hook and loop fastener facilitates the user's installation and removal of the transition plate, improving the convenience of use.
[0024] The PVC composite layer in the middle of the slide board has a seventh mating surface for the fourth type of Velcro, and the PVC composite layer at the upper end of the inclined support plate has an eighth mating surface for the fourth type of Velcro that matches the seventh mating surface. The seventh and eighth mating surfaces are either hook or loop surfaces of the Velcro, and their mating types are opposite. The inclusion of the fourth type of Velcro improves the stability of the slide and ensures user safety when using it.
[0025] Furthermore, slide handrail assemblies are provided on both sides of the slide board. Each handrail assembly includes two handrail plates arranged side by side along the length direction. The surface of the handrail plates is covered with a PVC composite layer. The PVC composite layers of adjacent edges of the two handrail plates are heat-fused to form a longitudinal splice. The PVC composite layer of one handrail plate is heat-fused to the PVC composite layer of the corresponding side of the slide board. The PVC composite layer of the other handrail plate extends outward to form an extension section. The extension section is detachably connected to the slide board by at least two sets of fifth Velcro fasteners. The slide handrail assembly provides reliable support for users when using the slide, reducing the risk of falling. It also provides guidance for the slide.
[0026] The fifth Velcro fastener includes a ninth mating surface on the PVC composite layer of the extension section and a tenth mating surface at the corresponding position on the slide board. The ninth and tenth mating surfaces are either hook or loop surfaces of the Velcro fastener, and their mating types are opposite. The fifth Velcro fastener improves the firmness of the connection between the handrail board and the slide board, enhancing the overall safety of the slide.
[0027] Furthermore, the rectangular plate, side support plate, or middle support plate is one of plastic plate, composite material plate, or wood composite plate; the plastic plate is one of polycarbonate (PC) plate, polypropylene (PP) plate, or acrylonitrile-butadiene-styrene copolymer (ABS) plate; the composite material plate is one of glass fiber reinforced plastic (GFRP) plate or carbon fiber reinforced plastic (CFRP) plate; and the wood composite plate is one of oriented strand board (OSB) or plywood.
[0028] Furthermore, the transition plate, pool support plate, bracing plate, and slide plate are all made of plastic sheets, composite materials, or wood composite materials; the plastic sheets are made of polycarbonate (PC), polypropylene (PP), or acrylonitrile-butadiene-styrene copolymer (ABS); the composite materials are made of glass fiber reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP); and the wood composite materials are made of oriented strand board (OSB) or plywood.
[0029] Compared with existing technologies, this utility model is a foldable ladder. The main body of the ladder is composed of multiple rectangular plates spliced together along the width direction, which can be folded back and forth to form steps. By cooperating with a V-shaped folding front stop mechanism, a forward-protruding folding support mechanism, and a fully unfolded folding enclosure structure, each step unit of the foldable ladder body is sequentially embedded in the step positioning groove and the top step positioning area, thereby achieving three-dimensional support and positioning, improving the stability of the ladder during use, reducing the possibility of swaying and tilting, and ensuring user safety; it can withstand a large load, and adults or children can easily step on and play on it.
[0030] Each rectangular plate of the folding staircase body can be folded along its splicing lines; the folding front support mechanism and the folding support mechanism are folded along their respective splicing lines within the folding enclosure structure, causing the rear and front limit support fabrics on both sides of the folding enclosure structure to lose their support and fold together; the transition platform assembly, slide board, pool support plate, and diagonal support plate can all be folded along their corresponding splicing lines; the folding and unfolding of the above-mentioned combined components form a support structure that not only provides sufficient support but also facilitates storage after folding.
[0031] Made of PVC composite layer and PVC mesh, and using hot melt welding and Velcro connection methods, the ladder has good waterproof and sun protection performance, the connection parts are firm and reliable, and it can effectively resist the impact of environmental factors, thus extending the service life of the ladder. Attached Figure Description
[0032] Figure 1 One of the schematic diagrams of a foldable ladder with a slide;
[0033] Figure 2 This is the second schematic diagram of the three-dimensional structure of a foldable ladder with a slide;
[0034] Figure 3 A three-dimensional structural diagram of a foldable ladder with a slide, with the folding enclosure structure removed;
[0035] Figure 4 for Figure 1One of the structural schematic diagrams of the main body of the folding staircase;
[0036] Figure 5 for Figure 1 The second structural schematic diagram of the main body of the folding staircase;
[0037] Figure 6 A three-dimensional structural diagram of the front view of a foldable ladder;
[0038] Figure 7 A three-dimensional structural diagram of the rear view of a foldable ladder;
[0039] Figure 8 for Figure 6 One of the structural diagrams after the main body of the folding staircase has been removed;
[0040] Figure 9 for Figure 6 The second structural diagram after the main body of the folding staircase has been removed;
[0041] Figure 10 for Figure 7 A structural diagram of the folding staircase after its main body has been removed.
[0042] Figure 11 for Figure 1 A schematic diagram of the folding front windshield mechanism;
[0043] Figure 12 for Figure 1 A schematic diagram of the folding support mechanism;
[0044] Figure 13 for Figure 1 A schematic diagram showing the combination of the main body of the folding staircase, the folding front stop mechanism, and the folding support mechanism;
[0045] Figure 14 An exploded view of the transition platform components, slide board, pool support plate, and bracing plate;
[0046] Figure 15 One of the schematic diagrams showing the combination of transition platform components, slide board, pool support plate and diagonal brace plate;
[0047] Figure 16 Schematic diagram 2 of the combination of transition platform components, slide board, pool support plate and diagonal brace;
[0048] Figure 17 A schematic diagram showing the connection of the transition platform components and the slide board;
[0049] Figure 18 for Figure 16 Exploded view of the handrail assembly of the middle slide;
[0050] Figure 19This is one of the schematic diagrams showing the usage of the foldable ladder with slide and the swimming pool;
[0051] Figure 20 This is the second schematic diagram showing the usage status of the foldable ladder with slide and the swimming pool.
[0052] Figure 21 This is the third schematic diagram showing the usage status of the foldable ladder with slide and the swimming pool. Detailed Implementation
[0053] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0054] Example 1: Please refer to Figure 1-21 As shown, a foldable ladder includes a foldable ladder body 1 and a foldable support assembly 2. The foldable ladder body 1 comprises at least two rectangular plates 11 sequentially spliced along the width direction. Each pair of adjacent rectangular plates 11 is folded back and forth to form a step unit 10. The foldable ladder body 1 contains at least two consecutively arranged step units 10.
[0055] The folding support assembly 2 includes a folding enclosure structure, a folding front panel mechanism, and a folding support mechanism, which are respectively housed within the folding enclosure. The folding enclosure structure consists of two parallel side support plates 21, a rear limiting support cloth 22 connecting the rear edges of the two side support plates 21, and a front limiting support cloth 23 connecting the lower front edges of the two side support plates 21, forming an accommodating space. The folding front panel mechanism consists of two symmetrically arranged support plates 24 that fold backward in the middle to form a V-shaped structure. The outer edges of the two support plates 24 are respectively fixed to the front of the two side support plates 21, and each support plate 24 has stepped notches 240. The area formed by the symmetrical notches 240 between the two support plates 24 is the step resting area 20, and the area formed between the tops of the two support plates 24 serves as the next step resting area 27. Through the mechanical dispersion characteristics of the V-shaped structure, the user's stepping pressure is evenly transmitted to the two side support plates 21, solving the problem of local deformation caused by single-point load-bearing in traditional ladders. In actual testing, the displacement of the step unit 10 under a 60kg load was less than 2cm, which improved the stability compared to traditional ladders.
[0056] The folding support mechanism consists of two intermediate support plates 25 that fold forward in the middle. The outer edges of the two intermediate support plates 25 are respectively fixed to the rear side of the side support plates 21 on both sides. The top of the two intermediate support plates 25 serves as the top step positioning area 26. Each step unit 10 of the folding staircase body 1 is sequentially fitted into the step resting area 20, the next step resting area 27, and the top step positioning area 26.
[0057] The surfaces of the rectangular plate 11, support plate 24, side support plate 21 and middle support plate 25 are all covered with a PVC composite layer. The rear limiting support cloth 22 and the front limiting support cloth 23 are made of PVC mesh. The PVC composite layer and the PVC mesh are connected by hot-melt welding to form a continuous sealed connection. The upper and lower PVC composite layers at the edges of each rectangular plate 11 are fused together by hot-melt welding. The PVC composite layers at the connection of adjacent rectangular plates 11 are fused together by hot-melt welding. The PVC composite layers at the edges of the support plate 24, side support plate 21 and middle support plate 25 are sealed by hot-melt welding.
[0058] The PVC composite layers on the outer sides of the two support plates 24 are respectively heat-fused to the PVC composite layers on the front side of the corresponding side support plate 21; the PVC composite layers on the outer sides of the two intermediate support plates 25 are respectively heat-fused to the PVC composite layers on the rear side of the corresponding side support plate 21.
[0059] The bottom surface of the rectangular plate 11 at the front end of the folding staircase body 1 is provided with a first Velcro fastener, which matches and connects to the outer surface of the front limiting support fabric 23. An extension plate 12 is connected to the end of the folding staircase body 1, and the extension plate 12 is connected to the outer surface of the rear limiting support fabric 22 via a second Velcro fastener. The first Velcro fastener includes a first mating surface 100 on the bottom surface of the rectangular plate 11 and a second mating surface 231 on the front limiting support fabric 23. The first mating surface 100 and the second mating surface 231 are either hook surfaces or loop surfaces of the Velcro fastener, and their mating types are opposite. The second Velcro fastener includes a third mating surface 121 on the extension plate 12 and a fourth mating surface 221 on the rear limiting support fabric 22. The third mating surface 121 and the fourth mating surface 221 are either hook surfaces or loop surfaces of the Velcro fastener, and their mating types are opposite.
[0060] The front edge of the side support plate 21 is a slope 211 with an inclination of 30°-60°, and the upper edge of the slope 211 is provided with an arc-shaped flexible guard edge, which is integrally formed with the PVC composite layer of the side support plate 21.
[0061] The foldable ladder also includes a transition platform assembly 6, a slide board 3, a pool support plate 4, and a bracing plate 5. The transition platform assembly 6 includes a transition plate 61 and a connecting plate 62. The front end of the transition plate 61 is spliced with the connecting plate 62. The connecting plate 62 is folded downwards and connected to the front side of the highest step unit 10 of the foldable ladder body 1 via a third Velcro fastener. The upper end of the slide board 3 is hot-melt welded to the rear end of the transition plate 61. The upper end of the pool support plate 4 is hot-melt welded to the bottom surface of the transition plate 61. The lower end of the bracing plate 5 is hot-melt welded to the lower end of the pool support plate 4, and the upper end is connected to the middle of the slide board 3 via a fourth Velcro fastener. The surface of each component is covered with a PVC composite layer, and the connection is made by hot-melt welding or Velcro composite connection.
[0062] The PVC composite layer surface of the connecting plate 62 is provided with a fifth mating surface 621 of the third hook and loop fastener, and the PVC composite layer of the highest step unit 10 is provided with a sixth mating surface 13 of the third hook and loop fastener that matches the fifth mating surface 621 at the corresponding position; wherein, the fifth mating surface 621 and the sixth mating surface 13 are respectively one of the hook surface or the loop surface of the hook and loop fastener, and the two mating types are opposite.
[0063] The PVC composite layer in the middle of the slide board 3 is provided with a seventh mating surface 31 of the fourth hook and loop fastener, and the PVC composite layer at the upper end of the inclined support plate 5 is provided with an eighth mating surface 51 of the fourth hook and loop fastener that matches the seventh mating surface 31; wherein, the seventh mating surface 31 and the eighth mating surface 51 are respectively one of the hook surface or loop surface of the hook and loop fastener, and the mating types of the two are opposite.
[0064] Slide handrail assemblies 7 are respectively provided on both sides of the slide board 3. Each slide handrail assembly 7 includes two handrail long plates 71 arranged side by side along the length direction. The surface of the handrail long plate 71 is covered with a PVC composite layer. The PVC composite layers of the adjacent edges of the two handrail long plates 71 are formed by hot-melt welding to form a longitudinal splice. The PVC composite layer of one handrail long plate 71 is hot-melt welded to the PVC composite layer of the corresponding side of the slide board 3. The PVC composite layer of the other handrail long plate 71 extends outward to form an extension section 711. The extension section 711 is detachably connected to the slide board 3 by at least two sets of fifth Velcro.
[0065] The fifth hook and loop fastener includes a ninth mating surface 712 on the PVC composite layer of the extension section 711 and a tenth mating surface 32 on the corresponding position of the slide board 3. The ninth mating surface 712 and the tenth mating surface 32 are either hook surfaces or loop surfaces of the hook and loop fastener, and their mating types are opposite.
[0066] The rectangular plate 11, side support plate 21, middle support plate 25, transition plate 61, pool support plate 4, diagonal brace plate 5, and slide plate 3 are all made of plastic, composite material, or wood composite materials. The plastic plate is made of polycarbonate (PC), polypropylene (PP), or acrylonitrile-butadiene-styrene copolymer (ABS). The composite material is made of glass fiber reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP). The wood composite material is made of oriented strand board (OSB) or plywood.
[0067] Example 2: Refer to Figure 1-21 As shown. During assembly, the folding support assembly 2 is first unfolded, and the folding front gate mechanism is unfolded from the folding enclosure structure. Its two symmetrically arranged support plates 24 fold backward in the middle to form a V-shaped structure. The side support plates 21 on both sides are opened on the outside of the two support plates 24, and the stepped positioning grooves formed by the stepped placement notches 240 on the upper edge of each support plate 24 are fitted into the corresponding step units 10 of the folding stair body 1. At the same time, the folding support mechanism is fully unfolded from the folding enclosure structure. Its two middle support plates 25, which fold forward in the middle, also support the side support plates 21 on both sides to fully open. The top step positioning area 26 formed by the top plane is fitted into the highest step unit 10 of the folding stair body 1, realizing three-dimensional support and positioning of the folding stair body 1.
[0068] Next, unfold the main body 1 of the folding staircase, match and connect the first Velcro on the bottom surface of the rectangular plate 11 at the front end of the main body 1 with the second mating surface 231 on the outer surface of the front limiting support cloth 23. Then, each step unit 10 of the main body 1 of the folding staircase is sequentially fitted into the step resting area 20, the next step resting area 27 and the top step positioning area 26. At the same time, connect the extension plate 12 at the end of the main body 1 of the folding staircase with the fourth mating surface 221 on the outer surface of the rear limiting support cloth 22 through the second Velcro, so that the main body 1 of the folding staircase is fixed on the folding enclosure structure.
[0069] Next, install the transition platform assembly 6. Connect the third hook-and-loop fastener fifth mating surface 621 at the front end of the transition plate 61 to the third hook-and-loop fastener sixth mating surface 13 on the facade of the highest step unit 10, ensuring a secure connection between the transition plate 61 and the folding staircase body 1. Then install the slide plate 3, connecting the fourth hook-and-loop fastener eighth mating surface 51 at the upper end of the inclined support plate 5 to the fourth hook-and-loop fastener seventh mating surface 31 in the middle of the slide plate 3, thus forming a stable support structure with the slide plate 3, the pool support plate 4, and the inclined support plate 5.
[0070] Finally, install the slide handrail assembly 7. The extension section 711 is detachably connected to the slide board 3 via at least two sets of fifth Velcro straps to complete the installation of the slide handrail assembly 7.
[0071] When storage is required, proceed in reverse order. First, separate the extension 711 of the slide handrail assembly 7 from the slide board 3, and fold the slide board 3, pool support plate 4, and diagonal brace plate 5. Then, separate the transition plate 61 from the highest step unit 10. Next, push the folding support mechanism and the folding front stop mechanism into the folding enclosure structure, and then fold each rectangular plate 11 of the folding staircase body 1 along its joint lines to complete the storage of the staircase.
[0072] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A foldable ladder, characterized in that, The system includes a folding staircase body (1) and a folding support assembly (2). The folding staircase body (1) consists of at least two rectangular plates (11) joined together along the width direction. Each pair of adjacent rectangular plates (11) are folded back and forth to form a step unit (10). The folding staircase body (1) contains at least two consecutively arranged step units (10). The folding support assembly (2) includes a folding enclosure structure, a folding front guard mechanism, and a folding support mechanism. The folding front guard mechanism and the folding support mechanism are respectively housed within the folding enclosure. The folding enclosure structure consists of two parallel side support plates (21), a rear limiting support cloth (22) connecting the rear edges of the two side support plates (21), and a front limiting support cloth (23) connecting the lower front edges of the two side support plates (21) to form a accommodating space. The folding front panel mechanism consists of two symmetrically arranged support plates (24) that fold backward in the middle to form a V-shaped structure. The outer edges of the two support plates (24) are fixed to the front of the side support plates (21) on both sides, and each support plate (24) is provided with a stepped placement notch (240). The area formed by the placement notch (240) between the two symmetrical support plates (24) is the step placement area (20), and the area formed between the tops of the two support plates (24) is the next step placement area (27). The folding support mechanism consists of two middle support plates (25) that fold forward in the middle. The outer edges of the two middle support plates (25) are fixed to the rear of the side support plates (21) on both sides, and the top of the two middle support plates (25) is the top step positioning area (26). Each step unit (10) of the folding staircase body (1) is sequentially fitted into the step placement area (20), the next step placement area (27), and the top step positioning area (26).
2. The foldable ladder according to claim 1, characterized in that, The rectangular plate (11), support plate (24), side support plate (21) and middle support plate (25) are all covered with PVC composite layer. The rear limiting support cloth (22) and front limiting support cloth (23) are made of PVC mesh. The PVC composite layer and PVC mesh are connected by hot melt welding to form a continuous sealed connection. The upper and lower PVC composite layers of the edges of each rectangular plate (11) are fused together by hot melt welding. The PVC composite layers at the connection of adjacent rectangular plates (11) are fused together by hot melt welding. The PVC composite layers at the edges of the support plate (24), side support plate (21) and middle support plate (25) are sealed by hot melt welding.
3. The foldable ladder according to claim 2, characterized in that, The PVC composite layers on the outer sides of the two support plates (24) are respectively heat-melted welded to the PVC composite layers on the front side of the corresponding side support plate (21); the PVC composite layers on the outer sides of the two intermediate support plates (25) are respectively heat-melted welded to the PVC composite layers on the rear side of the corresponding side support plate (21).
4. The foldable ladder according to claim 1, characterized in that, The bottom surface of the rectangular plate (11) at the front end of the folding staircase body (1) is provided with a first Velcro fastener, which is matched and connected to the outer surface of the front limiting support cloth (23). The end of the folding staircase body (1) is connected to an extension plate (12), which is connected to the outer surface of the rear limiting support cloth (22) through a second Velcro fastener. The first Velcro fastener includes a first mating surface (100) on the bottom surface of the rectangular plate (11) and a second mating surface (231) on the front limiting support cloth (23). The first mating surface (100) and the second mating surface (231) are respectively a hook surface or a loop surface of the Velcro fastener, and the mating types of the two are opposite. The second Velcro fastener includes a third mating surface (121) on the extension plate (12) and a fourth mating surface (221) on the rear limiting support cloth (22). The third mating surface (121) and the fourth mating surface (221) are respectively a hook surface or a loop surface of the Velcro fastener, and the mating types of the two are opposite.
5. The foldable ladder according to claim 1, characterized in that, The front edge of the side support plate (21) is a slope (211) with an inclination of 30° - 60°. The upper edge of the slope (211) is provided with an arc-shaped flexible guard edge, which is integrally formed with the PVC composite layer of the side support plate (21).
6. The foldable ladder according to claim 1, characterized in that, It also includes a transition platform assembly (6), a slide board (3), a pool support plate (4), and a bracing plate (5); the transition platform assembly (6) includes a transition plate (61) and a connecting plate (62), the front end of the transition plate (61) is spliced with the connecting plate (62), the connecting plate (62) is folded down and connected to the front side of the highest step unit (10) of the folding step ladder body (1) by a third Velcro fastener; the upper end of the slide board (3) is hot-melt welded to the rear end of the transition plate (61); the upper end of the pool support plate (4) is hot-melt welded to the bottom surface of the transition plate (61); the lower end of the bracing plate (5) is hot-melt welded to the lower end of the pool support plate (4), and the upper end is connected to the middle of the slide board (3) by a fourth Velcro fastener; the surface of each component is covered with a PVC composite layer, and the connection is made by hot-melt welding or Velcro composite connection.
7. The foldable ladder according to claim 6, characterized in that, The PVC composite layer of the connecting plate (62) is provided with a fifth mating surface (621) of the third hook and loop fastener, and the PVC composite layer of the highest step unit (10) is provided with a sixth mating surface (13) of the third hook and loop fastener that matches the fifth mating surface (621) at the corresponding position; wherein the fifth mating surface (621) and the sixth mating surface (13) are respectively one of the hook surface or the loop surface of the hook and loop fastener, and the two mating types are opposite; the PVC composite layer in the middle of the slide plate (3) is provided with a seventh mating surface (31) of the fourth hook and loop fastener, and the PVC composite layer at the upper end of the inclined support plate (5) is provided with an eighth mating surface (51) of the fourth hook and loop fastener that matches the seventh mating surface (31); wherein the seventh mating surface (31) and the eighth mating surface (51) are respectively one of the hook surface or the loop surface of the hook and loop fastener, and the two mating types are opposite.
8. The foldable ladder according to claim 6, characterized in that, Slide handrail assemblies (7) are respectively provided on both sides of the slide board (3). Each slide handrail assembly (7) includes two handrail plates (71) arranged side by side along the length direction. The surface of the handrail plates (71) is covered with a PVC composite layer. The PVC composite layers of the adjacent edges of the two handrail plates (71) are joined by hot-melt welding to form a longitudinal splice. The PVC composite layer on the side of one handrail plate (71) is hot-melt welded to the PVC composite layer on the corresponding side of the slide board (3). The other handrail plate (71) The PVC composite layer extends outward to form an extension section (711), which is detachably connected to the slide board (3) by at least two sets of fifth hook and loop fasteners; wherein the fifth hook and loop fasteners include a ninth mating surface (712) of the PVC composite layer of the extension section (711) and a tenth mating surface (32) at the corresponding position of the slide board (3). The ninth mating surface (712) and the tenth mating surface (32) are respectively one of the hook surface or the loop surface of the hook and loop fastener, and the mating types of the two are opposite.
9. The foldable ladder according to any one of claims 1-7, characterized in that, The rectangular plate (11), side support plate (21), or middle support plate (25) is one of plastic plate, composite material plate, or wood composite plate; the plastic plate is one of polycarbonate plate, polypropylene plate, or acrylonitrile-butadiene-styrene copolymer plate; the composite material plate is one of glass fiber reinforced plastic plate or carbon fiber reinforced plastic plate; the wood composite plate is one of oriented strand board or plywood.
10. The foldable ladder according to any one of claims 6-7, characterized in that, The transition plate (61), pool support plate (4), diagonal brace plate (5) and slide plate (3) are all made of plastic sheets, composite materials, or wood composite materials; the plastic sheets are made of polycarbonate, polypropylene, or acrylonitrile-butadiene-styrene copolymer; the composite materials are made of glass fiber reinforced plastic or carbon fiber reinforced plastic; and the wood composite materials are made of oriented strand board or plywood.