Modularized EPP (Expanded Polypropylene) foam stool with core framework
The modular design of the support frame and leg structure solves the problems of inconvenient assembly and insufficient strength of existing foam stools, enabling quick adjustment and assembly of the stools, and enhancing their applicability and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 浙江丰源实业有限公司
- Filing Date
- 2025-06-25
- Publication Date
- 2026-04-24
AI Technical Summary
Existing foam stools cannot be quickly and easily assembled from the stool board and legs, are inconvenient to adjust in height, are not easy to join multiple stools together, and are not strong or durable.
It adopts a modular design with a core skeleton, and through the combination structure of supporting skeleton, fixing sleeve, docking stool legs and supporting stool legs, it can realize the quick adjustment of stool height and convenient splicing of multiple stools, and enhance the strength of stool.
It enables quick disassembly and assembly of stools, meeting the needs of different groups and environments, increasing the usable area and durability of stools, and making them more widely applicable.
Smart Images

Figure CN224155368U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foam stool technology, specifically a modular EPP foam stool with a core frame. Background Technology
[0002] Traditional foam stools are mainly made of expanded polypropylene (EPP) and polystyrene, achieving lightweight and portability through injection molding or compression molding. EPP (Expanded Polypropylene) is a foamed material made of polypropylene (PP) with characteristics such as lightweight, high elasticity, impact resistance, temperature resistance, and environmental friendliness. The combination of a core frame and EPP material makes the foam stool stronger.
[0003] A foam drum stool disclosed in Chinese Utility Model Patent Application Publication No. CN209547511U, although lightweight due to its foam upper and lower shells, and the connecting parts and upper and lower covers located inside the upper and lower shells that enhance the load-bearing capacity of the foam drum stool, making it heavier than ordinary foam drum stools, still suffers from drawbacks. Existing stools cannot be quickly and easily assembled from the stool board and legs, are inconvenient to carry, and have difficulty adjusting height, failing to meet the needs of different users. Furthermore, existing stools are not very strong and extremely undurable, and there are inconveniences in assembling multiple stools. Therefore, we propose a novel device to solve these problems. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a modular EPP foam stool with a core frame, which solves the problems of existing stools not allowing for quick and convenient assembly of the stool board and legs, inconvenience in adjusting the stool height, and inconvenience in splicing multiple stools.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a modular EPP foam stool with a core skeleton, comprising a stool board, a supporting skeleton inside the stool board, a fixing sleeve inserted into the lower surface of the stool board, a fixing seat threaded through the internal thread of the fixing sleeve, a connecting stool leg fitted onto the lower part of the fixing seat, a connecting skeleton inside the connecting stool leg, a connecting sleeve inserted into the internal thread of the connecting sleeve, a supporting seat threaded through the internal thread of the connecting sleeve, a supporting stool leg fitted onto the lower part of the supporting seat, a fixing skeleton inside the supporting stool leg, a fixing rod inserted into one side of the supporting stool leg, an anti-slip seat snapped into the lower part of the supporting stool leg, a connecting seat snapped into one side of the stool board, and a connecting rod inserted into the upper surface of the connecting seat.
[0008] Optionally, the supporting frame has multiple reinforcing ribs inside, the docking frame has multiple reinforcing ribs inside, and the fixing frame has multiple reinforcing ribs inside.
[0009] Optionally, the upper surface of the stool board is provided with a contact pad, and the contact pad is made of silicone.
[0010] Optionally, a placement hole is provided on one side of the stool, and threads are provided inside the fixing sleeve and the mating sleeve.
[0011] Optionally, the lower part of the anti-slip base is provided with an anti-slip pad, and the anti-slip pad is made of rubber.
[0012] Optionally, a hole is provided on one side of the anti-slip seat, and the fixing rod passes through the hole to fix the anti-slip seat. A hole is also provided on one side of the connecting stool leg.
[0013] Optionally, the upper surface of the stool board has a hole, the connecting rod passes through the hole and connects with the connecting seat, and both sides of the stool board have storage slots and storage holes.
[0014] Optionally, a handle is rotatably connected to one side of the stool, and the surface of the handle is provided with a wear-resistant pad, the wear-resistant pad being made of rubber.
[0015] In summary, the technical effects and advantages of this utility model are as follows:
[0016] 1. This utility model has a reasonable structure. After removing the stool board, the four connecting stool legs are screwed into the fixing sleeves inside the stool board through the fixing seats to fix the connecting stool legs. Similarly, the four supporting stool legs are screwed into the connecting sleeves inside the connecting stool legs through the support seats to fix the supporting stool legs. The anti-slip seat is then clipped onto the supporting stool legs and fixed to them by the fixing rod. When the stool height needs to be adjusted, the supporting stool legs can be unscrewed, the fixing rod pulled out, and the anti-slip seat removed and installed on the connecting stool legs, then fixed by the fixing rod. When the stool is not in use, the fixing rod can be removed and inserted into the placement hole on one side of the stool board, allowing the connecting and supporting stool legs to be unscrewed and placed. Users can then move and place the stool by holding the handle on one side of the stool board, achieving convenient and quick height adjustment. The adjustable height caters to the needs of different groups and environments, making it more widely applicable. The core frame is placed inside the foam stool, resulting in greater strength and durability. This reduces the inconvenience of quickly disassembling and assembling the stool, eliminating the time-consuming, laborious, and inconvenient installation process. When multiple stools need to be combined, the connecting seats and rods in the storage slots and holes on both sides of the stool board are removed. The connecting seats are inserted into the stool board, and the connecting rods secure them. The other side of the connecting seat is inserted into another stool, and then secured with the connecting rods, allowing the stools to be combined for convenient and quick assembly. This increases the usable area of the stools, allowing multiple people to sit together, thus reducing the need for tables when traveling and lacking a proper table. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is an exploded view of the stool structure of this utility model;
[0019] Figure 3 This is an exploded view of the docking stool leg structure of this utility model;
[0020] Figure 4 This is an exploded view of the anti-slip seat structure of this utility model;
[0021] Figure 5 This is an exploded view of the docking seat structure of this utility model.
[0022] In the diagram: 1. Stool board; 2. Support frame; 3. Fixing sleeve; 4. Fixing seat; 5. Connecting stool leg; 6. Connecting frame; 7. Connecting sleeve; 8. Support seat; 9. Supporting stool leg; 10. Fixing frame; 11. Fixing rod; 12. Anti-slip seat; 13. Connecting seat; 14. Connecting rod; 15. Anti-slip pad; 16. Handle; 17. Wear-resistant pad. 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 protection scope of the present utility model.
[0024] Example: Reference Figures 1-5 The modular EPP foam stool with a core frame shown includes a stool board 1, a supporting frame 2 inside the stool board 1, a fixing sleeve 3 inserted into the lower surface of the stool board 1, a fixing seat 4 threaded through the inside of the fixing sleeve 3, a docking stool leg 5 sleeved at the lower part of the fixing seat 4, a docking frame 6 inside the docking stool leg 5, a docking sleeve 7 inserted into the inside of the docking stool leg 5, a supporting seat 8 threaded through the inside of the docking sleeve 7, a supporting stool leg 9 sleeved at the lower part of the supporting seat 8, a fixing frame 10 inside the supporting stool leg 9, a fixing rod 11 inserted into one side of the supporting stool leg 9, an anti-slip seat 12 snapped into the lower part of the supporting stool leg 9, a docking seat 13 snapped into one side of the stool board 1, and a docking rod 14 inserted into the upper surface of the docking seat 13.
[0025] As a preferred embodiment of this example, Figures 2 to 5As shown, the stool board 1 has a supporting frame 2 inside, and the supporting frame 2 has multiple reinforcing ribs inside. The upper surface of the stool board 1 has a contact pad made of silicone. A placement hole is opened on one side of the stool board 1. A fixing sleeve 3 is inserted into the lower surface of the stool board 1. The fixing sleeve 3 has threads inside, and a fixing seat 4 passes through the internal threads of the fixing sleeve 3. A docking stool leg 5 is fitted onto the lower part of the fixing seat 4. A hole is opened on one side of the docking stool leg 5. A docking frame 6 is installed inside the docking stool leg 5. The docking frame 6 has multiple reinforcing ribs inside. A docking sleeve 7 is inserted into the interior of the docking stool leg 5. The docking sleeve 7 has threads inside, and a supporting seat 8 passes through the internal threads of the docking sleeve 7. A supporting stool leg 9 is fitted onto the lower part of the supporting seat 8. The stool has an internal fixed frame 10 with multiple reinforcing ribs. A fixing rod 11 is inserted into one side of the supporting stool leg 9. An anti-slip seat 12 is snapped into the lower part of the supporting stool leg 9. A hole is opened on one side of the anti-slip seat 12, through which the fixing rod 11 passes to secure the anti-slip seat 12. An anti-slip pad 15, made of rubber, is provided at the lower part of the anti-slip seat 12. A docking seat 13 is snapped into one side of the stool board 1. A docking rod 14 is inserted into the upper surface of the docking seat 13. A hole is opened on the upper surface of the stool board 1, through which the docking rod 14 passes to dock with the docking seat 13. Storage slots and storage holes are provided on both sides of the stool board 1. A handle 16 is rotatably connected to one side of the stool board 1. A wear-resistant pad 17 is provided on the surface of the handle 16. Made of rubber, during use, after removing the stool board 1, screw the four connecting stool legs 5 into the fixing sleeves 3 inside the stool board 1 through the fixing seats 4 to fix the connecting stool legs 5. Then screw the four supporting stool legs 9 into the connecting sleeves 7 inside the connecting stool legs 5 through the support seats 8 to fix the supporting stool legs 9. Secure the anti-slip seats 12 onto the supporting stool legs 9 using the fixing rods 11. When the stool height needs to be adjusted, unscrew the supporting stool legs 9, pull out the fixing rods 11, remove the anti-slip seats 12, install them on the connecting stool legs 5, and then fix them using the fixing rods 11. When the stool is not in use, remove the fixing rods 11 and insert them into the placement holes on one side of the stool board 1, connecting the connecting stool legs 5 and the supporting stool legs. 9. After unscrewing and placing, the stool can be moved and placed by holding the handle 16 on one side of the stool board 1, allowing for convenient and quick height adjustment to meet the needs of different people and environments, thus broadening its applicability. The core frame is placed inside the foam stool, making the stool stronger and more durable, reducing the inconvenience of quick disassembly and assembly. Installation is time-consuming, laborious, and inconvenient, and placement is also less difficult. When multiple stools need to be combined, the docking seats 13 and docking rods 14 in the storage slots and holes on both sides of the stool board 1 are removed. The docking seats 13 are inserted into the stool board 1, and the docking rods 14 secure the docking seats 13 to the stool board 1. The other side of the docking seats 13 is then inserted into another stool.The stools are then secured using connecting rods 14, allowing them to be assembled for convenient and quick use. This increases the usable area of the stools, enabling multiple people to sit together. This reduces the need for tables when traveling and there are no other tables available; the stools can be combined to create a makeshift table.
[0026] The working principle of this practical application is as follows:
[0027] During use, after removing the stool base 1, screw the four connecting stool legs 5 into the fixing sleeves 3 inside the stool base 1 via the fixing seats 4 to fix the connecting stool legs 5. Then screw the four supporting stool legs 9 into the connecting sleeves 7 inside the connecting stool legs 5 via the support seats 8 to fix the supporting stool legs 9. Secure the anti-slip seats 12 onto the supporting stool legs 9 using the fixing rods 11. When the stool height needs to be adjusted, unscrew the supporting stool legs 9, pull out the fixing rods 11, remove the anti-slip seats 12, install them onto the connecting stool legs 5, and then fix them using the fixing rods 11. When multiple stools need to be joined together, simply... Remove the docking seat 13 and docking rod 14 from the storage slots and storage holes on both sides of the bench 1. Insert the docking seat 13 into the bench 1 and fix the docking seat 13 and the bench 1 together with the docking rod 14. Insert the other side of the docking seat 13 into another bench and fix it with the docking rod 14 so that the benches can be assembled for use. When the bench is not needed, remove the docking seat 13 and docking rod 14 and place them in the storage slots and storage holes on both sides of the bench 1. Remove the fixing rod 11 and insert it into the placement hole on one side of the bench 1. Unscrew the docking bench leg 5 and the supporting bench leg 9 and place them in place. Then, use the handle 16 on one side of the bench 1 to move and place the bench 1.
[0028] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.
[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 modular EPP foam stool with a core frame, comprising a stool board (1), characterized in that: The stool board (1) has a support frame (2) inside. A fixing sleeve (3) is inserted into the lower surface of the stool board (1). A fixing seat (4) is threaded through the inside of the fixing sleeve (3). A docking stool leg (5) is sleeved on the lower part of the fixing seat (4). A docking frame (6) is provided inside the docking stool leg (5). A docking sleeve (7) is inserted into the inside of the docking stool leg (5). A support seat (8) is threaded through the inside of the docking sleeve (7). A support stool leg (9) is sleeved on the lower part of the support seat (8). A fixing frame (10) is provided inside the support stool leg (9). A fixing rod (11) is inserted into one side of the support stool leg (9). An anti-slip seat (12) is snapped into the lower part of the support stool leg (9). A docking seat (13) is snapped into one side of the stool board (1). A docking rod (14) is inserted into the upper surface of the docking seat (13).
2. A modular EPP foam stool with a core skeleton according to claim 1, characterized in that: The supporting frame (2) has multiple reinforcing ribs inside, the docking frame (6) has multiple reinforcing ribs inside, and the fixing frame (10) has multiple reinforcing ribs inside.
3. The modular EPP foam stool with a core skeleton according to claim 1, characterized in that: The upper surface of the stool board (1) is provided with a contact pad, and the contact pad is made of silicone.
4. The modular EPP foam stool with a core skeleton according to claim 1, characterized in that: The stool board (1) has a placement hole on one side, the fixing sleeve (3) has a thread inside, and the docking sleeve (7) has a thread inside.
5. The modular EPP foam stool with a core skeleton according to claim 1, wherein: The lower part of the anti-slip seat (12) is provided with an anti-slip pad (15), and the anti-slip pad (15) is made of rubber.
6. The modular EPP foam stool with a core skeleton according to claim 1, wherein: The anti-slip seat (12) has a hole on one side, and the fixing rod (11) passes through the hole to fix the anti-slip seat (12). The connecting stool leg (5) has a hole on one side.
7. The modular EPP foam stool with a core skeleton according to claim 1, wherein: The upper surface of the stool (1) is provided with holes, and the connecting rod (14) passes through the holes and connects with the connecting seat (13). Storage slots and storage holes are provided on both sides of the stool (1).
8. A modular EPP foam stool with a core frame according to claim 1, characterized in that: A handle (16) is rotatably connected to one side of the stool (1), and a wear-resistant pad (17) is provided on the surface of the handle (16), and the wear-resistant pad (17) is made of rubber.
Citation Information
Patent Citations
Foam drum stool
CN209547511U