Folding stair

Abstract

The utility model provides a folding stairway which comprises an upper half stairway, a lower half stairway and a guardrail, the upper half stairway and the lower half stairway are hinged to each other, and the upper half stairway and the lower half stairway are folded or unfolded relative to the hinged position in a rotating mode. The upper half stair and the lower half stair are rotated and unfolded to form a use stair, and the guardrail is detachably assembled on a stair surface of the use stair and located on one side edge of the stair surface; the hinged position of the upper half stair and the lower half stair is arranged on one side deviating from the stair surface, and the stair surface is a pedal part when a user goes up and down the stair; the upper half stair and the lower half stair are folded, and the faces, away from the stair faces, of the upper half stair and the lower half stair are attached to each other. When the upper half stairway and the lower half stairway are unfolded, the stairway surfaces of the upper half stairway and the lower half stairway are butted, and two end surfaces of the upper half stairway and the lower half stairway, the ladder can be stored after being disassembled and folded, transfer and turnover use are facilitated, and meanwhile, the safety of climbing can be improved by arranging the protective handrails.

Description

Technical Field

[0001] This utility model relates to the field of staircase technology for building construction, and in particular to a folding staircase. Background Technology

[0002] In residential building projects using prefabricated staircases, after the nth floor concrete is poured, during the construction of the n+1th floor, the concrete strength of the nth floor does not meet the design requirements, which means that the prefabricated staircase on that floor cannot be installed in time. If no temporary ladder is set up, construction workers often have to climb up and down by climbing the formwork, which causes great inconvenience to the construction workers and also poses a significant safety hazard.

[0003] To address the accessibility issue for workers on the n+1 level, temporary ladders or temporary scaffolding are typically installed at suitable locations on construction sites. However, temporary ladders are prone to swaying, deformation, or even collapse during use, leading to falls. Temporary scaffolding, on the other hand, is susceptible to settlement, tilting, or even complete collapse during construction if the foundation is not properly hardened or the ground is unstable, endangering worker safety.

[0004] Therefore, the use of temporary ladders or temporary scaffolding as temporary passage measures often results in inadequate safety protection. Although they may barely meet the passage requirements, there are still safety hazards. Utility Model Content

[0005] This utility model aims to solve the problem of difficult access for construction workers during building construction. It provides a folding staircase with a simple structure that can be disassembled and folded for storage, making it convenient for transportation and reuse. At the same time, the addition of guardrails can improve the safety of climbing.

[0006] To solve the above-mentioned technical problems, this utility model provides a folding staircase, including an upper staircase, a lower staircase and a handrail. The upper staircase and the lower staircase are hinged to each other, and the upper staircase and the lower staircase can be rotated and folded or unfolded relative to each other at the hinge position.

[0007] The upper and lower staircases, when rotated and unfolded, become usable staircases. The handrails are detachable and assembled onto the staircase surface and are located on one side of the staircase surface.

[0008] The hinge points of the upper and lower staircases are located on the side away from the stair surface, which is the part of the foot that is stepped on when going up and down the stairs.

[0009] The upper and lower staircases are folded, with their opposite sides touching each other; when unfolded, their staircase surfaces meet, and their hinged ends abut against each other.

[0010] Optionally, the upper staircase, lower staircase, and railing are all made of one of the following materials: polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), polycarbonate (PC), and high-density polyethylene (HDPE).

[0011] Optionally, the guardrail may be provided on one or both sides of the stair surface;

[0012] The guardrail includes a pin, and a hole is provided on one side of the ladder surface, and the pin is inserted into the hole.

[0013] Optionally, the upper half of the staircase and the lower half of the staircase have the same length of stair surface.

[0014] Optionally, rubber material is attached to the end faces of the upper and lower staircases where hinge positions are set.

[0015] Optionally, the upper and lower staircases are hinged together.

[0016] Optionally, both the upper and lower staircases include a supporting body and several panels, which are used to form the stair surface.

[0017] Optionally, the supporting body adopts a hollowed-out design in the middle.

[0018] Optionally, a support part is provided at one end of the support body away from the hinge position, so that the staircase can be supported by the support part after it is used;

[0019] The support portion is provided with a reserved hole for pre-embedding reinforcing bars, and the reserved hole penetrates the support portion.

[0020] Optionally, the upper part of the staircase has a support hole for installing a support rod.

[0021] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0022] 1. By setting up upper and lower staircases that can rotate and fold, it is convenient for transportation and reuse, and the safety performance of the downstairs is improved by setting up detachable guardrails.

[0023] 2. This folding staircase has an independent support structure, which can be quickly installed and disassembled without complicated adjustments and fixation, greatly shortening the construction time and improving construction efficiency.

[0024] 3. The folding staircase is made of lightweight and high-strength materials (polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), polycarbonate (PC), high-density polyethylene (HDPE)). The overall weight of the staircase is small, which facilitates transportation and turnover while meeting the strength requirements. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a folding staircase unfolding into a usable staircase in a preferred embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the folding and storage of a folding staircase in a preferred embodiment of this utility model;

[0027] Figure 3 This is a diagram showing the intermediate state of the folding staircase in a preferred embodiment of the present invention during folding.

[0028] Figure 4 This is a top view of the staircase used in a preferred embodiment of the present invention (44).

[0029] Figure 5 This is a schematic diagram of the installation of stair railings and support rods in a preferred embodiment of this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1. Upper staircase; 11. Support body; 12. Panel; 13. Support part; 14. Reserved hole; 15. Support hole; 2. Lower staircase; 3. Hinge position; 4. Stair surface; 41. Insertion hole; 5. End face; 51. Rubber; 6. Handrail; 61. Insert foot; 7. Support rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0034] refer to Figures 1-5 This embodiment provides a folding staircase designed to solve the problem of difficult passage for construction workers during building construction. The folding staircase includes an upper staircase 1, a lower staircase 2, and a handrail 6. The upper staircase 1 and the lower staircase 2 are hinged to each other. The upper staircase 1 and the lower staircase 2 can be rotated and folded or unfolded relative to each other at the hinge position 3. After the upper staircase 1 and the lower staircase 2 are rotated and unfolded, they become a usable staircase. The handrail 6 can be detachably assembled onto the stair surface 4 of the usable staircase and is located on one side of the stair surface 4.

[0035] This folding staircase can be folded or unfolded by rotating the upper staircase 1 and the lower staircase 2 relative to each other around the hinge position 3. When the upper staircase 1 and the lower staircase 2 are rotated open, a usable staircase is formed (e.g., Figure 1 Assemble handrails 6 on the side of the staircase (e.g.) Figure 5 This provides security protection for users.

[0036] Specifically, the hinge point 3 of the upper staircase 1 and the lower staircase 2 is located on the side facing away from the stair surface 4, which is the part of the foot that is stepped on when going up and down the stairs. In the folded state, the sides of the upper staircase 1 and the lower staircase 2 facing away from the stair surface 4 are tightly fitted together (e.g., Figure 2 When unfolded, the trapezoidal surfaces 4 of the two parts align, and the two end faces 5 at the hinge position 3 abut against each other (e.g., Figure 1 This ensures the stability of the staircase structure.

[0037] When the staircase is in use, the end faces 5 of the upper staircase 1 and the lower staircase 2 abut against each other, preventing the upper staircase 1 and the lower staircase 2 from rotating further, thus allowing workers to pass through. When folding is needed, it can be automatically folded by lifting it upwards along the hinge position 3, making it easy to handle.

[0038] The upper staircase 1, lower staircase 2, and handrail 6 are all made of one of the following materials: polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), polycarbonate (PC), or high-density polyethylene (HDPE). These materials, as lightweight engineering plastics, possess excellent weather resistance, corrosion resistance, and strength, meeting the staircase's performance requirements in various environments. They also reduce the overall weight of the staircase, facilitating transportation and handling while maintaining sufficient strength.

[0039] In this embodiment, the guardrail 6 can be optionally installed on one or both sides of the stair surface 4 to enhance the safety of the staircase. Figure 5 The guardrail 6 is detachable, and includes a pin 61. One side of the ladder surface 4 is provided with a hole 41. The pin 61 is inserted into the hole 41. Through the tight insertion of the pin 61 into the hole 41, the guardrail 6 can be quickly installed and removed, making it convenient for users to adjust according to actual needs.

[0040] The upper half of the staircase 1 and the lower half of the staircase 2 have the same length of the tread surface 4. This makes the overall structure of the staircase more harmonious when unfolded, and makes it more comfortable and stable for users to go up and down the stairs. At the same time, it is flat when folded, making it easy to store.

[0041] In this embodiment, rubber 51 material (such as...) is adhered to the end face 5 of the upper staircase 1 and the lower staircase 2 at the hinge position 3. Figure 3 Rubber 51 material has good elasticity and anti-slip properties. On the one hand, it can reduce the wear between the end faces 5 during the folding or unfolding of the stairs, thus extending the service life of the stairs. On the other hand, it can also play a certain role in anti-slip and improve the safety of the stairs.

[0042] The upper staircase 1 and the lower staircase 2 are hinged together (e.g., Figure 3 The hinge structure is simple, easy to install, and rotates flexibly, ensuring smooth and unobstructed folding and unfolding of the stairs.

[0043] In this embodiment, both the upper staircase 1 and the lower staircase 2 include a supporting body 11 and several panels 12. The panels 12 are closely arranged to form a stable stair surface 4, providing a solid foundation for users to step on. The supporting body 11 has a hollowed-out design in the middle, and is hollowed out at certain intervals to form a honeycomb-like hollow structure, which also reduces the overall weight of the staircase.

[0044] In this embodiment, a support portion 13 (e.g., ...) is provided at one end of the support body 11 away from the hinge position 3. Figure 5When the staircase is unfolded and ready for use, it can be effectively supported by the support part 13 to ensure the stability of the staircase during use. The support part 13 is also provided with a reserved hole 14 for pre-embedding reinforcing bars. The reserved hole 14 penetrates the support part 13. By setting the pre-embedded reinforcing bars, the connection strength between the staircase and the ground or other supporting structures can be further enhanced, thereby improving the safety and reliability of the staircase.

[0045] The upper staircase 1's support portion 13 is provided with support holes 15 (e.g., ...). Figure 5 The support hole 15 is used to install the support rod 7. Depending on the actual usage scenario and needs, installing the support rod 7 can further enhance the stability of the staircase, providing users with a safer and more reliable experience.

[0046] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A folding staircase, characterized in that: It includes an upper staircase, a lower staircase, and a railing. The upper and lower staircases are hinged to each other, and the upper and lower staircases can be rotated, folded, or unfolded relative to each other at the hinged position. The upper and lower staircases, when rotated and unfolded, become usable staircases. The handrails are detachable and assembled onto the staircase surface and are located on one side of the staircase surface. The hinge points of the upper and lower staircases are located on the side away from the stair surface, which is the part of the foot that is stepped on when going up and down the stairs. The upper and lower staircases are folded, with their opposite sides touching each other; when unfolded, their staircase surfaces meet, and their hinged ends abut against each other.

2. A folding staircase according to claim 1, characterized in that: The upper and lower staircases and railings are all made of one of the following materials: polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), polycarbonate (PC), or high-density polyethylene (HDPE).

3. A folding staircase according to claim 1, characterized in that: The guardrail is installed on one or both sides of the ladder surface; The guardrail includes a pin, and a hole is provided on one side of the ladder surface, and the pin is inserted into the hole.

4. A folding staircase according to claim 1, characterized in that: The upper half of the staircase and the lower half of the staircase have the same length of stair surface.

5. A folding staircase according to claim 4, characterized in that: Rubber material is attached to the end faces of the upper and lower staircases where hinge positions are located.

6. A folding staircase according to claim 5, characterized in that: The upper and lower sections of the staircase are hinged together.

7. A folding staircase according to claim 1, characterized in that: Both the upper and lower staircases include a supporting body and several panels, which are used to form the stair surface.

8. A folding staircase according to claim 7, characterized in that: The supporting structure features a hollowed-out design in the middle.

9. A folding staircase according to claim 8, characterized in that: The supporting body is provided with a supporting part at one end away from the hinge position, so that the staircase can be supported by the supporting part after it is in use. The support portion is provided with a reserved hole for pre-embedding reinforcing bars, and the reserved hole penetrates the support portion.

10. A folding staircase according to claim 9, characterized in that: The upper part of the staircase has a support hole for installing a support rod.

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