Indoor prefabricated modular assembly type stair structure
By employing a locking mechanism of plates and blocks, threaded connections of nuts and bolts, and designs for spring telescopic rods and damping spring shock absorbers, the problem of wear during bolt installation and removal in prefabricated stairs has been solved, resulting in improved stability and service life, and enhanced ease of installation and use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONG JIAO YI GONG JU QIAO SUI GONG CHENG YOU XIAN GONG SI
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-24
AI Technical Summary
Prefabricated stairs are prone to wear and tear during frequent bolt installation and removal, which leads to decreased stability and affects service life.
It adopts a locking structure of clamping plate and clamping block, combined with the threaded connection of nut and bolt. The clamping plate and clamping block are locked into the connecting block by rotation. Spring telescopic rod and damping spring shock absorber are used to reduce wear and impact damage, and anti-slip pads and handrails are used to increase stability.
It improves the installation stability and service life of prefabricated stairs, reduces wear and impact damage, speeds up the installation and unlocking process, and enhances the safety and stability of use.
Smart Images

Figure CN224161323U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated staircase technology, specifically an indoor prefabricated modular prefabricated staircase structure. Background Technology
[0002] Interior prefabrication modularization is an innovative construction method that involves prefabricating building components in a factory and then transporting them to the construction site for rapid assembly, greatly shortening the construction cycle. This modular design is highly flexible and can be customized with diverse module combinations to meet individual decoration styles and functional requirements according to different interior space needs.
[0003] Prefabricated staircases are assembled components made up of multiple stair slabs joined together. They feature fast construction speed, convenient operation, and high appearance quality, and can meet the requirements of green buildings for high efficiency, high quality, low cost, and low energy consumption.
[0004] When installing prefabricated stairs, they are usually connected by bolts. However, frequent installation and removal of bolts can cause wear and tear, which can reduce the stability of the prefabricated stairs during subsequent use.
[0005] Therefore, an indoor prefabricated modular assembled staircase structure is proposed to address the above problems. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: An indoor prefabricated modular assembled staircase structure includes a pair of fixed boxes, with a connecting block slidably fitted inside each fixed box; the connecting block is smaller than the fixed box; an installation door is provided on the surface of each fixed box; a retaining plate is rotatably connected to the inner wall of each fixed box; the retaining plate and the fixed box are connected by a torsion spring; a retaining block is fixedly connected to the bottom of the retaining plate; and a staircase body is fixedly connected to the end of the retaining block. By adding the retaining plate and retaining block, the staircase body can be fixed by the rotating retaining block when installed, increasing stability during the fixing of the staircase body. Simultaneously, when the connecting block is pulled after being inserted into the fixed box, it is blocked by the fixed box, thus increasing stability within the fixed box. The subsequent engagement of the retaining block with the connecting block accelerates the installation of the staircase body, and the engagement method reduces wear on the staircase body, thereby extending its service life.
[0008] Preferably, a spring telescopic rod is fixedly connected to the inner wall of the fixing box; a fixing plate is fixedly connected to the top of the spring telescopic rod; the fixing plate is slidably connected to the fixing box; a connecting plate is fixedly connected to the end of the fixing plate; a nut is rotatably connected to the middle of the connecting plate; a bolt is fixedly connected to the top of the clamping plate; the nut and bolt are correspondingly set and threadedly connected; by adding the nut and bolt, after the clamping block engages with the connecting block, the clamping block is fixed by the threaded connection of the nut and bolt, thereby stably keeping the clamping block inside the connecting block. Then, when unlocking is required, the nut is rotated in the opposite direction until it is disengaged from the nut. At this time, the spring telescopic rod will continuously push the fixing plate upward to reset, thereby speeding up the unlocking of the clamping block.
[0009] Preferably, a plurality of damping spring shock absorbers are fixedly connected to the inner wall of the fixed box; a baffle is fixedly connected to the end of each damping spring shock absorber; the baffle and the fixed plate are correspondingly arranged; by adding damping spring shock absorbers, the impact force received by the baffle can be transmitted to the damping spring shock absorbers for gradual elimination, thereby reducing the impact damage after the fixed plate rebounds, thereby increasing the service life.
[0010] Preferably, a plurality of fixed rods are fixedly connected to the top of the staircase body; a handrail is fixedly connected to the top of the fixed rod; by adding a handrail, a point of force can be increased when walking, thereby making the movement on the staircase body more stable and increasing the support area.
[0011] Preferably, anti-slip pads are fixed to the surface of the stair body; multiple anti-slip pads are provided on the stair body; by adding anti-slip pads, the contact friction of the anti-slip pads can reduce slipping when walking on the stair body, thereby increasing the stability when walking on the stair body.
[0012] Preferably, a sponge is fixed to the inner wall of the connecting block; multiple sponges are provided on the connecting block; by adding sponges, the frictional resistance of the sponge can increase the fit between the locking block and the connecting block when they come into contact, making the locking block more stable when it is fixed to the connecting block.
[0013] The advantages of this utility model are:
[0014] 1. The prefabricated modular assembled staircase structure of this utility model, by adding a locking plate and a locking block, allows the staircase body to be fixed by rotating the locking block into the connecting block during installation. This increases stability when fixing the staircase body. At the same time, when the connecting block is pulled after being inserted into the fixing box, it is blocked by the fixing box, thus increasing stability inside the fixing box. Subsequently, the locking block can speed up the installation of the staircase body by locking the connecting block. At the same time, the locking method can reduce wear on the staircase body, thereby extending its service life.
[0015] 2. The indoor prefabricated modular assembled staircase structure of this utility model can be fixed by adding nuts and bolts after the locking block engages with the connecting block through the threaded connection of the nuts and bolts. This keeps the locking block stably inside the connecting block. Then, when unlocking is required, the nuts can be rotated in the opposite direction until the locking block is released from the nuts. At this time, the spring telescopic rod will continuously push the fixing plate upward to reset it, thereby speeding up the unlocking of the locking block. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the main body of this utility model;
[0018] Figure 2 This is a schematic diagram of the handrail structure in this utility model;
[0019] Figure 3 This is a schematic diagram of the connecting block in this utility model;
[0020] Figure 4 This is a schematic diagram of the card block structure in this utility model;
[0021] Figure 5 This is a schematic diagram of the bolt structure in this utility model.
[0022] In the diagram: 1. Fixing box; 11. Connecting block; 12. Installing door; 13. Card plate; 14. Card block; 15. Staircase body; 2. Spring telescopic rod; 21. Fixing plate; 22. Connecting plate; 23. Nut; 24. Bolt; 3. Damping spring shock absorber; 31. Baffle; 4. Fixing rod; 41. Handrail; 5. Anti-slip mat; 6. Sponge. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0024] Specific implementation examples are given below.
[0025] like Figures 1 to 5As shown in the embodiment of this utility model, an indoor prefabricated modular assembled staircase structure includes a pair of fixed boxes 1. A connecting block 11 is slidably fitted inside each fixed box 1. The connecting block 11 is smaller than the fixed box 1. An installation door 12 is provided on the surface of each fixed box 1. A retaining plate 13 is rotatably connected to the inner wall of each fixed box 1. The retaining plate 13 and the fixed box 1 are connected by a torsion spring. A retaining block 14 is fixedly connected to the bottom of the retaining plate 13. A staircase body 15 is fixedly connected to the end of the retaining block 14. During operation, the installation door 12 is first opened, and then the retaining plate 13 is rotated. When the retaining plate 13 rotates, the retaining block 14 moves accordingly, placing the connecting block 11 inside the fixed box 1. After placement, the retaining plate 13 is released. At this time, the retaining plate 13 will drive the retaining block 14 to move and rotate towards the inside of the connecting block 11. Finally, the retaining block 14 enters the inside of the connecting block 11 and... The installation of the stair body 15 is completed by engaging the locking mechanism and then closing the installation door 12. When in use, the pair of fixing boxes 1 are installed in the designated positions. After the stair body 15 is installed, it will be restrained by the fixed boxes 1 after the connecting block 11 and the locking block 14 are engaged, thus achieving stability. By adding the locking plate 13 and the locking block 14, the stair body 15 can be fixed by the rotating locking block 14 into the connecting block 11 during installation, which increases stability when fixing the stair body 15. At the same time, when the connecting block 11 is pulled after being inserted into the fixing box 1, it will be blocked by the fixing box 1, thus increasing stability inside the fixing box 1. Then, the engagement of the connecting block 11 by the locking block 14 can speed up the installation of the stair body 15. At the same time, the fixing by the locking method can reduce the wear and tear on the stair body 15, thereby extending its service life.
[0026] like Figures 3 to 5As shown, a spring telescopic rod 2 is fixedly connected to the inner wall of the fixed box 1; a fixed plate 21 is fixedly connected to the top of the spring telescopic rod 2; the fixed plate 21 is slidably connected to the fixed box 1; a connecting plate 22 is fixedly connected to the end of the fixed plate 21; a nut 23 is rotatably connected to the middle of the connecting plate 22; a bolt 24 is fixedly connected to the top of the clamping plate 13; the nut 23 and the bolt 24 are correspondingly arranged and threadedly connected; during operation, after the clamping block 14 engages the connecting block 11, the fixed plate 21 can be pressed down to make the nut 23 and the bolt 24 contact, and then the nut 23 can be rotated. When rotating, it will slide down along the surface of the bolt 24, and when sliding down, it will continuously extend and retract the spring. The rod 2 applies a pushing force to compress it. When the nut 23 rotates and contacts the locking plate 13, it stops. The locking block 14 is fixed and restricted by the nut 23 and bolt 24, making it more stable inside the connecting block 11. By adding the nut 23 and bolt 24, the locking block 14 can be fixed by the threaded connection of the nut 23 and bolt 24 after it engages with the connecting block 11. This keeps the locking block 14 stably inside the connecting block 11. Then, when unlocking is needed, the nut 23 is rotated in the opposite direction until it is disengaged from the nut 23. At this time, the spring telescopic rod 2 will continuously push the fixing plate 21 to move upward, thereby resetting it and speeding up the unlocking of the locking block 14.
[0027] like Figure 4 As shown, multiple damping spring shock absorbers 3 are fixedly connected to the inner wall of the fixed box 1; a baffle 31 is fixedly connected to the end of each damping spring shock absorber 3; the baffle 31 and the fixed plate 21 are correspondingly arranged; during operation, when the nut 23 is disengaged from the bolt 24, it will be pushed by the compression force of the spring telescopic rod 2. When pushed, the fixed plate 21 will move closer to the baffle 31. At this time, when it comes into contact with the baffle 31, the damping spring shock absorber 3 will be compressed due to the movement of the baffle 31. When compressed, the moving force will be gradually reduced through its own structure, thereby eliminating the received impact force; by adding damping spring shock absorbers 3, the impact force received by the baffle 31 can be gradually eliminated by transferring it to the damping spring shock absorber 3, thereby reducing the impact damage after the fixed plate 21 rebounds, thereby increasing its service life.
[0028] like Figures 1 to 2 As shown, multiple fixed rods 4 are fixedly connected to the top of the stair body 15; a handrail 41 is fixedly connected to the top of the fixed rod 4; during operation, when walking on the stair body 15, one can contact the handrail 41 to increase the support point, thereby stabilizing the stair body 15 through the multiple fixed rods 4, increasing the safety when supporting the handrail 41; by adding the handrail 41, the force point can be increased when walking, thus making the stair body 15 more stable and increasing the support area.
[0029] like Figures 1 to 2As shown, anti-slip pads 5 are fixedly attached to the surface of the stair body 15; multiple anti-slip pads 5 are provided on the stair body 15; during operation, after the stair body 15 is installed and put into use, when walking on the stair body 15, the anti-slip pads 5 will first come into contact with the anti-slip pads 5. At this time, the anti-slip pads 5 will be squeezed by the gravity generated when in contact, and after being squeezed, they will deform to increase the contact area between the walker and the stair body 15. This increases stability by increasing the contact area. At the same time, the anti-slip pads 5 increase the friction with the walker, increasing the frictional resistance when walking, thereby speeding up the movement speed; by adding anti-slip pads 5, the contact friction of the anti-slip pads 5 when the walker comes into contact with the stair body 15 can reduce slipping when walking, thereby increasing the stability when walking on the stair body 15.
[0030] like Figure 3 As shown, a sponge 6 is fixed to the inner wall of the connecting block 11; multiple sponges 6 are provided on the connecting block 11; during operation, when the locking block 14 engages and fixes the connecting block 11, the locking block 14 will first contact multiple sponges 6. At this time, during the movement after contact with the sponges 6, the sponges 6 will increase the moving resistance of the locking block 14 inside the connecting block 11. After the locking block 14 is fully inserted into the connecting block 11 and engaged, the sponges 6 will increase the stability of the locking block 14 inside the connecting block 11; by adding sponges 6, the frictional resistance of the sponges 6 can increase the fit of the locking block 14 with the connecting block 11 when the locking block 14 is in contact with the connecting block 11, making it more stable when fixed to the connecting block 11.
[0031] Working principle: First, open the installation door 12, then rotate the locking plate 13. As the locking plate 13 rotates, the locking block 14 also moves, placing the connecting block 11 into the fixing box 1. After placement, release the locking plate 13. At this time, the locking plate 13 will drive the locking block 14 to move and rotate towards the connecting block 11. Finally, the locking block 14 enters the connecting block 11 and engages with it. Then, close the installation door 12 to complete the overall installation of the staircase body 15. When in use, simply install a pair of fixing boxes 1 in the designated positions. After the staircase body 15 is installed, the engagement of the connecting block 11 and the locking block 14 will... The installed fixing box 1 is restrained, thus stabilizing it. After the connecting block 11 is engaged using the locking block 14, the fixing plate 21 can be pressed down to bring the nut 23 and bolt 24 into contact. Then, the nut 23 is rotated, and as it rotates, it slides down along the surface of the bolt 24. As it slides down, it continuously applies a pushing force to the spring telescopic rod 2, compressing it. When the nut 23 rotates and comes into contact with the locking plate 13, it stops. Thus, the locking block 14 is fixed and restricted by the nut 23 and bolt 24, making it more stable inside the connecting block 11. When the nut 23 disengages from the bolt 24, it is pushed by the compressive force of the spring telescopic rod 2. When the staircase is pushed, the fixed plate 21 moves closer to the baffle 31. Upon contact with the baffle 31, the damping spring shock absorber 3 is compressed due to the movement of the baffle 31. During compression, the moving force is gradually reduced through its own structure, thereby eliminating the received impact force. When walking on the staircase body 15, it can contact the handrail 41, increasing its support points. Multiple fixed rods 4 provide stability during walking, increasing safety when holding onto the handrail 41. After the staircase body 15 is installed and put into use, when walking on it, it first contacts the anti-slip mat 5. At this time, the anti-slip mat 5... The pressure generated upon contact causes the object to be squeezed, which in turn deforms, increasing the contact area between the walker and the stair body 15. This increased contact area enhances stability. Simultaneously, the anti-slip mat 5 increases friction with the walker, increasing frictional resistance and thus accelerating movement. When the locking block 14 engages with the connecting block 11, it first contacts multiple sponges 6. During movement after contact with the sponges 6, the sponges 6 increase the resistance to movement of the locking block 14 within the connecting block 11. Once the locking block 14 is fully engaged within the connecting block 11, the sponges 6 further enhance the stability of the locking block 14 within the connecting block 11.
[0032] 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 claimed utility model.
Claims
1. An indoor prefabricated modular assembled staircase structure, characterized in that: It includes a pair of fixed boxes (1), and a connecting block (11) is slidably fitted inside the fixed box (1); the connecting block (11) is smaller than the fixed box (1); an installation door (12) is opened on the surface of the fixed box (1); a card plate (13) is rotatably connected to the inner wall of the fixed box (1); the card plate (13) and the fixed box (1) are connected by a torsion spring; a card block (14) is fixedly connected to the bottom of the card plate (13); and a stair body (15) is fixedly connected to the end of the card block (14).
2. The indoor prefabricated modular assembled staircase structure according to claim 1, characterized in that: A spring telescopic rod (2) is fixedly connected to the inner wall of the fixed box (1); a fixed plate (21) is fixedly connected to the top of the spring telescopic rod (2); the fixed plate (21) is slidably connected to the fixed box (1); a connecting plate (22) is fixedly connected to the end of the fixed plate (21); a nut (23) is rotatably connected to the middle of the connecting plate (22); a bolt (24) is fixedly connected to the top of the clamping plate (13); the nut (23) and the bolt (24) are correspondingly set and threadedly connected.
3. The indoor prefabricated modular assembled staircase structure according to claim 2, characterized in that: Multiple damping spring shock absorbers (3) are fixed to the inner wall of the fixed box (1); a baffle (31) is fixed to the end of the damping spring shock absorber (3); the baffle (31) and the fixed plate (21) are arranged correspondingly.
4. The indoor prefabricated modular assembled staircase structure according to claim 3, characterized in that: The top of the staircase body (15) is fixed with multiple fixing rods (4); the top of the fixing rods (4) is fixed with handrails (41).
5. The indoor prefabricated modular assembled staircase structure according to claim 4, characterized in that: The surface of the stair body (15) is fixed with anti-slip pads (5); multiple anti-slip pads (5) are provided on the stair body (15).
6. The indoor prefabricated modular assembled staircase structure according to claim 5, characterized in that: The inner wall of the connecting block (11) is fixed with a sponge (6); multiple sponges (6) are provided on the connecting block (11).