Rotary folding stair structure

Abstract

The utility model discloses a rotary folding stair structure, and relates to the technical field of folding stairs. Comprising a base column, a lower power step and a plurality of pedal steps stacked up and down, the base column penetrates through the lower power step in a rotatable mode, the pedal steps are located above the lower power step and penetrate through the base column in a rotatable mode, and arc-shaped lower rails are arranged at the bottoms of the pedal steps. The top of the lower power step and the top of the pedal step are each provided with a sliding base movably matched with the interior of the lower rail, the outer side wall of the lower power step and the outer side wall of the pedal step are each provided with a vertical rod, and a protective rope is detachably connected between the lower power step and the vertical rod on the outer wall of the uppermost pedal step. And a through hole through which a protection rope passes is formed in the vertical rod between the uppermost pedal step and the lower power step. According to the rotary folding stair structure, the pedal steps can be unfolded or folded, and the occupied space of the rotary folding stair structure can be reduced when the rotary folding stair structure is not used.

Description

Technical Field

[0001] The utility model relates to the technical field of folding stairs, in particular to a rotary folding stair structure. Background Technique

[0002] A stair consists of a flight of continuous steps, a landing, and enclosing members, etc. The horizontal projection distance between the lowest and highest steps of the stair is the stair length, and the total height of the steps is the stair height. As a component for vertical traffic between floors in a building, the stair is used for traffic connection between floors and when there is a large height difference, and is an indispensable component in a floor.

[0003] With the development of society, the housing prices in modern cities are getting higher and higher. There are many duplex structures of the LOFT apartment type. Traditional stairs occupy a large amount of indoor space, resulting in a significant reduction in space utilization and greatly reducing the comfort of residents. Content of the Utility Model

[0004] The utility model provides a rotary folding stair structure to solve the problems in the background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: A rotary folding stair structure, including a base column, a lower power step, and a plurality of pedal steps stacked up and down. The lower power step is rotatably penetrated by the base column, and the pedal steps are located above the lower power step and are rotatably penetrated by the base column. An arc-shaped lower track is provided at the bottom of each pedal step. Sliding seats that are movably matched with the inside of the lower track are installed at the top of the lower power step and the top of the pedal steps. Vertical rods are installed on the outer side walls of the lower power step and the pedal steps. A protective rope is detachably connected between the vertical rods on the outer wall of the lower power step and the outer wall of the uppermost pedal step. A through hole through which the protective rope passes is provided on the vertical rod between the uppermost pedal step and the lower power step.

[0006] Further, clamping mechanisms are installed on the vertical rods on the outer wall of the lower power step and the vertical rods on the outer wall of the uppermost pedal step. The clamping mechanism includes a first arc-shaped block and a second arc-shaped block. The first arc-shaped block and the second arc-shaped block are connected by a connecting mechanism and can clamp the vertical rod. A connecting plate is fixedly connected to the outer wall of the second arc-shaped block, and the protective rope is detachably connected to the connecting plate.

[0007] Further, the connecting mechanism includes a fixing screw and a nut. The outer diameter of the first arc-shaped block is larger than that of the second arc-shaped block. Fixing screws are fixedly connected to both ends of the first arc-shaped block. Mounting holes through which the fixing screws pass are provided on the connecting plate, and nuts are threadedly connected to the parts of the fixing screws passing through the mounting holes.

[0008] Further, a threaded cylinder is fixedly connected to the side of the connecting plate away from the first arc-shaped block, and a stud threadedly connected to the threaded cylinder is fixedly installed at the end of the protective rope.

[0009] Further, an installation cavity through which the base column passes is formed inside the lower power step. A fixed gear located in the installation cavity is fixedly sleeved on the base column. A drive motor is fixedly installed in the installation cavity, and a traveling gear engaged with the fixed gear is installed on the output shaft of the drive motor.

[0010] Further, at least two protective ropes are provided.

[0011] Compared with the prior art, the present utility model provides a rotary folding staircase structure, which has the following

[0012] beneficial effects:

[0013] 1. The rotary folding staircase structure can unfold or retract the pedal steps. When not in use, it can reduce its floor space.

[0014] 2. The rotary folding staircase structure can play a role in protecting users when the pedal steps are unfolded by arranging the protective ropes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is an enlarged schematic structural diagram of part A of the present utility model;

[0017] Figure 3 is a schematic plan view of the present utility model when folded.

[0018] In the figure: 1. Base column; 2. Lower power step; 3. Pedal step; 4. Vertical rod; 5. Protective rope; 6. First arc-shaped block; 7. Second arc-shaped block; 8. Connecting plate; 9. Fixed screw; 10. Nut; 11. Threaded cylinder; 12. Stud; 13. Installation cavity; 14. Drive motor; 15. Traveling gear; 16. Fixed gear; 17. Lower track. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-3, the utility model discloses a rotary folding staircase structure, including a base column 1, a lower power step 2, and a plurality of pedal steps 3 stacked up and down. The lower power step 2 is rotatably penetrated by the base column 1. The pedal steps 3 are located above the lower power step 2 and are rotatably penetrated by the base column 1. An arc-shaped lower track 17 is provided at the bottom of each pedal step 3. Sliding seats that are movably matched with the inside of the lower track 17 are installed at the top of the lower power step 2 and the top of the pedal steps 3. Vertical rods 4 are installed on the outer side walls of the lower power step 2 and the pedal steps 3. A protective rope 5 is detachably connected between the vertical rods 4 on the outer walls of the lower power step 2 and the topmost pedal step 3. A through hole through which the protective rope 5 passes is provided on the vertical rod 4 between the topmost pedal step 3 and the lower power step 2.

[0021] A limiting kit sleeved on the base column 1 can be provided on one side of each of the pedal steps 3 and the lower power step 2. Limiting grooves are respectively provided at the lower ends of the limiting kits, and driving blocks matched with the limiting grooves are respectively provided at the upper ends of the limiting kits. The limiting kits are overlapped and connected in series on the base column 1.

[0022] The vertical rods 4 are arranged at different positions on the outer walls of the pedal steps 3. When the plurality of pedal steps 3 are folded, the vertical rods 4 outside the plurality of pedal steps 3 are arranged in sequence and staggered from each other.

[0023] Specifically, clamping mechanisms are installed on the vertical rods 4 on the outer wall of the lower power step 2 and the vertical rods 4 on the outer wall of the topmost pedal step 3. The clamping mechanism includes a first arc-shaped block 6 and a second arc-shaped block 7. The first arc-shaped block 6 and the second arc-shaped block 7 are connected by a connecting mechanism and can clamp the vertical rod 4. A connecting plate 8 is fixedly connected to the outer wall of the second arc-shaped block 7, and the protective rope 5 is detachably connected to the connecting plate 8.

[0024] The connecting mechanism includes a fixing screw 9 and a nut 10. The outer diameter of the first arc-shaped block 6 is larger than the outer diameter of the second arc-shaped block 7. Fixing screws 9 are fixedly connected to both ends of the first arc-shaped block 6. Mounting holes through which the fixing screws 9 pass are provided on the connecting plate 8, and a nut 10 is threadedly connected to the part of the fixing screw 9 passing through the mounting hole.

[0025] In this embodiment, when the first arc-shaped block 6 and the second arc-shaped block 7 hold the vertical rod 4, the fixing screw 9 passes through the mounting hole on the connecting plate 8, and then a nut 10 is threadedly connected to the part of the fixing screw 9 passing through the mounting hole. Tightening the nut 10 can make the first arc-shaped block 6 and the second arc-shaped block 7 clamp the vertical rod 4.

[0026] Specifically, a threaded cylinder 11 is fixedly connected to the side of the connecting plate 8 away from the first arc-shaped block 6, and a stud 12 threadedly connected to the threaded cylinder 11 is fixedly installed at the end of the protective rope 5.

[0027] In this embodiment, the safety rope 5 is threadedly connected to the threaded cylinder 11 through the stud 12 at its end, so that the safety rope 5 can be disassembled.

[0028] Specifically, an installation cavity 13 through which the base column 1 passes is formed inside the lower power step 2. A fixed gear 16 located inside the installation cavity 13 is fixedly sleeved on the base column 1. A drive motor 14 is fixedly installed inside the installation cavity 13, and a traveling gear 15 that cooperates with the fixed gear 16 is installed on the output shaft of the drive motor 14.

[0029] In this embodiment, an installation cavity 13, a drive motor 14 and a traveling gear 15 can also be provided on the uppermost pedal step 3, and the base column 1 is provided with a fixed gear 16 in cooperation therewith.

[0030] The drive motor 14 drives the traveling gear 15 to rotate. Since the base column 1 is rotatably connected to the lower power step 2 and the pedal step 3, the traveling gear 15 will rotate along the outer circumference of the fixed gear 16, causing the lower power step 2 to rotate and driving the pedal step 3 to unfold or fold and store.

[0031] Specifically, at least two safety ropes 5 are provided.

[0032] In this embodiment, multiple safety ropes 5 are provided, which can reduce the gap between the bottom end of the safety rope 5 and the pedal step 3 to play a certain role in preventing falling.

[0033] In summary, the rotary folding staircase structure can unfold or retract the pedal step 3. When not in use, it can reduce its floor space. By providing the safety rope 5, it can play a role in protecting the user when the pedal step 3 is unfolded.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary folding staircase structure, comprising a base column (1), a lower power step (2), and a plurality of pedal steps (3) stacked up and down, characterized in that: The lower power step (2) is rotatably penetrated by the base column (1). The pedal step (3) is located above the lower power step (2) and is rotatably penetrated by the base column (1). An arc-shaped lower track (17) is provided at the bottom of the pedal step (3). Sliding seats that are movably matched with the inside of the lower track (17) are installed at the top of the lower power step (2) and the top of the pedal step (3). Vertical rods (4) are installed on the outer side walls of the lower power step (2) and the pedal step (3). A protective rope (5) is detachably connected between the vertical rods (4) on the outer walls of the lower power step (2) and the topmost pedal step (3). A through hole through which the protective rope (5) passes is formed in the vertical rod (4) between the topmost pedal step (3) and the lower power step (2).

2. The rotary folding staircase structure according to claim 1, characterized in that: Clamping mechanisms are installed on the vertical rods (4) on the outer wall of the lower power step (2) and the vertical rods (4) on the outer wall of the topmost pedal step (3). The clamping mechanism includes a first arc-shaped block (6) and a second arc-shaped block (7). The first arc-shaped block (6) and the second arc-shaped block (7) are connected by a connecting mechanism and can clamp the vertical rod (4). A connecting plate (8) is fixedly connected to the outer wall of the second arc-shaped block (7). The protective rope (5) is detachably connected to the connecting plate (8).

3. A rotary folding staircase structure according to claim 2, characterized in that: The connecting mechanism includes a fixing screw (9) and a nut (10). The outer diameter of the first arc-shaped block (6) is larger than the outer diameter of the second arc-shaped block (7). Fixing screws (9) are fixedly connected to both ends of the first arc-shaped block (6). Mounting holes through which the fixing screws (9) pass are formed in the connecting plate (8). Nuts (10) are threadedly connected to the parts of the fixing screws (9) passing through the mounting holes.

4. A rotary folding staircase structure according to claim 2, characterized in that: A threaded cylinder (11) is fixedly connected to the side of the connecting plate (8) away from the first arc-shaped block (6). A stud (12) that is threadedly connected to the threaded cylinder (11) is fixedly installed at the end of the protective rope (5).

5. A rotary folding staircase structure according to claim 1, characterized in that: An installation cavity (13) through which the base column (1) passes is formed inside the lower power step (2). A fixed gear (16) located inside the installation cavity (13) is fixedly sleeved on the base column (1). A drive motor (14) is fixedly installed inside the installation cavity (13). A traveling gear (15) that cooperates with the fixed gear (16) is installed on the output shaft of the drive motor (14).

6. The rotary folding staircase structure according to claim 1, wherein: At least two protective ropes (5) are provided.

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