Multifunctional folding table plate

By designing support rods, support seats, support plates and other structures on the folding table, the problems of limited use area of ​​the tabletop on the high-speed rail and unstable items are solved, the expansion and stable support of the tableboard are achieved, and the convenience and comfort of passengers are improved.

CN119969729AInactive Publication Date: 2025-05-13ANHUI JINYING ALUMINUM
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Patent Information

Application Number
CN202510236801.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2025-05-13
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When the existing folding table is used on high-speed rail, the desktop area is limited, the tea cup is unstable, and the mobile phone cannot support it, which leads to passengers being easily exhausted during the journey, affecting convenience and comfort.

Method used

A multi-function folding table plate is designed to achieve expansion and stable support of the table plate through structures such as support rods, support seats, support plates, threaded rods and bevel gears, increase the usable area, and improve the stability of the items through folding cup sleeves and concave and concave surfaces.

Benefits of technology

It achieves the expansion of the usage area of ​​the table, supports the stable placement of mobile phones and tea cups, and improves the convenience and comfort of passengers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The multifunctional folding table plate comprises a table plate body, supporting rods are rotatably connected to the left side and the right side of the rear side of the table plate body, the supporting rods are rotatably connected to a supporting seat, the rear side of the supporting seat is fixed to the lower portion of a backrest of a high-speed rail seat, and a first empty groove is formed in the upper portion of the interior of the table plate body; a second empty groove is formed in the lower portion in the table board body and located below the first empty groove, a first rotary knob is arranged in the middle of the front side of the table board body and located on the front side of the first empty groove, a top cover is arranged on the rear side of the upper surface of the first empty groove, a supporting plate is arranged below the top cover, and a second rotary knob is arranged at the bottom of the table board body; the first table plate body and the second table plate body are arranged on the left side and the right side of the second empty groove correspondingly. According to the multifunctional folding table board, the use of a mobile phone support is improved, meanwhile, the tabletop can be expanded to increase the use area, meanwhile, the foldable cup sleeve is arranged for containing a tea cup and preventing the tea cup from toppling, and usability and safety of passengers are improved.
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Description

Technical Field

[0001] The invention relates to the technical field of folding table tops, in particular to a multifunctional folding table top. Background Art

[0002] High-speed railway, abbreviated as HSR, refers to a railway with high infrastructure design speed standards that allows trains to travel safely and at high speeds on tracks. The operating speed of the train is above 200km / h. For many business people, in order to pursue time, they generally choose high-speed railways, which have fast travel speeds and high safety.

[0003] With the rapid development of China's railways, higher requirements have been placed on high-speed rail equipment in order to better serve people. The storage tables used in high-speed rails have simple structures, single functions, and certain limitations in space utilization. They can only be used to place passengers' personal belongings. The small tables of high-speed rails are usually made of PC materials. The surface of the table tops made of this material has been frosted and painted, and is made by blister processing. This treatment method not only increases the scratch resistance of the table top, but also has the characteristics of pressure resistance, impact resistance, and non-deformation. At the same time, it is also flame retardant. However, there are still certain problems with the existing folding table tops when they are used:

[0004] For example, a folding table with publication number CN204936895U has a technical solution that includes an upper table body, a lower table body and a driving device that is driven and connected between the upper table body and the lower table body. The upper table body is flippably arranged on the lower table body, and the driving device is drivingly connected to the upper table body to drive the upper table body to rotate relative to the lower table body. A first mounting groove is provided on the side of the upper table body facing the lower table body. The folding table of the utility model can solve the problem in the prior art that office and entertainment facilities cannot be conveniently provided during the journey. However, when the existing folding table is used as a railway storage table, the passenger's use area of ​​the desktop is limited. At the same time, when a tea cup is placed on the desktop, when the passenger in front adjusts the seat backward, there will be shaking, causing the tea cup on the folding table to fall over. At the same time, the mobile phone cannot be supported when riding on a high-speed train for a long time, and the passenger is easily tired during the journey, which affects the convenience and comfort of the user's ride.

[0005] In view of this, we conducted in-depth research on the above issues, which led to the present case.

[0006] In view of the above problems, an innovative design is carried out on the basis of the original folding table board. Summary of the invention

[0007] The purpose of the present invention is to provide a multifunctional folding table top to solve the problems in the above-mentioned background technology that the use area of ​​the folding table top is limited, it is not stable enough to place tea cups, and it cannot support mobile phones.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A multifunctional folding table top comprises a table top body, support rods are rotatably connected and installed on both left and right sides of the rear side of the table top body, and the support rods are rotatably connected to a support seat, and the rear side of the support seat is fixed below the backrest of a high-speed rail seat, a first empty slot is arranged at the upper part of the interior of the table top body, and a second empty slot is arranged at the lower part of the interior of the table top body, and the second empty slot is located below the first empty slot, a first twist is arranged at the middle of the front side of the table top body, and the first twist is located at the front side of the first empty slot, a top cover is arranged at the rear side of the upper surface of the first empty slot, and a support plate is arranged below the top cover, a second twist is arranged at the bottom of the table top body, and the second twist is located in the middle of the bottom of the second empty slot, and the first table top body and the second table top body are arranged at both left and right sides of the second empty slot.

[0010] Preferably, a top cover is provided on the rear side of the upper surface of the table top body, and a handle is fixedly installed on the rear side of the upper surface of the top cover, and the top cover is located above the first empty slot to form a forward and backward moving structure.

[0011] By adopting the above technical solution, the top cover can be driven to move on the upper surface of the table board body by manually pulling the handle. When the top cover moves to the front, the rear position of the first empty slot can be opened to facilitate the internal support plate to prop up the mobile phone for use.

[0012] Preferably, a first threaded rod is fixedly connected to the rear side of the first twist, and the rear end of the first threaded rod is connected to the rear side of the first slot to form a rotating structure, and a moving block is threadedly installed on the outer rear side of the first threaded rod to form a forward and backward moving structure.

[0013] By adopting the above technical solution, when the first knob is manually rotated, the first threaded rod is driven to rotate, and then the moving block threadedly connected to the first threaded rod moves back and forth on the bottom surface inside the first slot, so as to provide mechanical power for the support of the support plate.

[0014] Preferably, a support plate is movably installed above the moving block, and connecting rods are movably installed on both left and right sides of the support plate, and the rear ends of the connecting rods are movably connected to the left and right sides of the rear side inside the first empty slot.

[0015] By adopting the above technical solution, when the moving block moves forward and backward, the support plate can be driven to be propped up by rotating the connecting rod, and the moving block is threadedly connected to the first threaded rod. The propped-up position of the support plate is stable, which is convenient for use as a mobile phone holder, providing convenience for passengers.

[0016] Preferably, the upper end of the second torque is connected to a first rotating shaft, and the first rotating shaft passes through the bottom surface of the table top body, the upper end bearing of the first rotating shaft is connected to the top surface inside the second slot, and a first bevel gear is fixedly connected and installed in the middle of the first rotating shaft to form a rotating structure.

[0017] By adopting the above technical solution, manually rotating the second knob can drive the first rotating shaft to rotate, and then simultaneously drive the first bevel gear to rotate, providing mechanical power for the first table plate body and the second table plate body to move and expand to the left and right sides.

[0018] Preferably, the second bevel gear is installed with tooth patterns on both sides of the first bevel gear, and the left and right ends of the second bevel gear are fixedly connected with threaded sleeves, the threaded sleeves pass through the fixed rod, and the bottom of the fixed rod is fixed to the bottom surface of the second empty groove to support the threaded sleeves.

[0019] By adopting the above technical solution, when the first bevel gear rotates, the second bevel gear connected to its teeth rotates at the same time, thereby driving the threaded sleeve to rotate, providing mechanical power for the first table panel body and the second table panel body to move and expand to the left and right sides.

[0020] Preferably, the left and right sides of the threaded sleeve are both threadedly connected and installed with a second threaded rod, and the thread directions of the left and right sides of the second threaded rod are opposite, and the left and right sides of the second threaded rod are both fixedly connected and installed with the first table panel body and the second table panel body, and sliding blocks are provided on the bottom surfaces of the first table panel body and the second table panel body, and the first table panel body is located in the second empty slot and moves to the left to expand the usable area, and the second table panel body is located in the second empty slot and moves to the right to expand the usable area.

[0021] By adopting the above technical solution, when the threaded sleeve moves, it simultaneously drives the two second threaded rods on the left and right to rotate and move left and right, thereby driving the first table board body and the second table board body to expand outward respectively, thereby increasing the use area of ​​the table board body and improving passenger convenience.

[0022] Preferably, a foldable cup sleeve is provided in the middle of the first table board body, and the foldable cup sleeve is made of silicone material, and the foldable cup sleeve extends downward to form a space for placing the cup body.

[0023] By adopting the above technical solution, when the first table panel is pulled out to the left, the foldable cup sleeve can be pulled downward, and a tea cup can be placed inside the foldable cup sleeve to prevent the front passenger from touching the tea cup and causing it to fall when adjusting the seat, thereby improving stability. At the same time, the silicone material is used, which has an anti-scalding effect, and its toughness makes it easy to push it upwards and fold it directly for storage after use.

[0024] Preferably, a concave-convex surface is provided on the upper side of the second table top body, and the concave-convex surface increases friction with the placed objects.

[0025] By adopting the above technical solution, when the second table board is pulled out to the right, relatively smooth objects can be placed on it, and the friction increased by the concave and convex surface prevents the objects from slipping, thereby improving the stability of the placed objects.

[0026] Compared with the prior art, the invention has the following beneficial effects: the multifunctional folding table top,

[0027] 1. A support plate for supporting a mobile phone is provided. When the first turning knob is manually rotated, the first threaded rod is driven to rotate, and then a moving block threadably connected to the first threaded rod moves forward and backward through the bottom surface of the first slot. A support plate is movably connected and installed above the moving block, and connecting rods are movably connected and installed on both sides of the support plate, and the rear ends of the connecting rods are movably connected to the left and right sides of the rear side of the first slot. When the moving block moves forward and backward, the support plate can be propped up by the rotation of the connecting rod, and the moving block is threadably connected to the first threaded rod. The propped-up position of the support plate is stable, which is convenient for use as a mobile phone holder and provides convenience for passengers.

[0028] 2. A first table panel body and a second table panel body are provided to increase the use area of ​​the table top, the left and right sides of the threaded sleeve are threadedly connected and installed with a second threaded rod, and the left and right sides of the second threaded rod have opposite thread directions, and the left and right sides of the second threaded rod are fixedly connected and installed with the first table panel body and the second table panel body, the bottom surfaces of the first table panel body and the second table panel body are provided with sliding blocks, and the first table panel body is located in the second empty slot and moves to the left to expand the use area, and the second table panel body is located in the second empty slot and moves to the right to expand the use area, when the threaded sleeve moves, it drives the left and right second threaded rods to rotate and move left and right at the same time, thereby driving the first table panel body and the second table panel body to expand outwards respectively, thereby increasing the use area of ​​the table panel body and improving the convenience of passengers;

[0029] 3. A foldable cup holder is provided to prevent tipping. A foldable cup holder is provided in the middle of the first table panel, and the foldable cup holder is made of silicone material. The foldable cup holder extends downward to form a space for placing the cup. When the first table panel is pulled out to the left, the foldable cup holder is pulled downward, and a tea cup can be placed inside the foldable cup holder to prevent the front passenger from touching the tea cup and tipping over when adjusting the seat, thereby improving stability. At the same time, the silicone material is used, which has an anti-scalding effect, and its toughness makes it easy to push it upward and fold it directly for storage after use.

[0030] 4. A second table board body is provided for increasing friction. A concave-convex surface is provided on the top of the second table board body, and the concave-convex surface increases the friction with the placed objects. When the second table board body is pulled out to the right, relatively smooth objects can be placed on it. The concave-convex surface increases the friction to prevent the objects from slipping, thereby improving the stability of the placed objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the left side main structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the cross-sectional structure of the left side of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the present invention from the top on the left side;

[0034] Figure 4 This is a schematic diagram of the front structure of the table board body of the present invention;

[0035] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0036] Figure 6 This is a schematic diagram of the front structure of the first table board of the present invention;

[0037] Figure 7 This is a schematic diagram of the three-dimensional structure of the first table board of the present invention;

[0038] Figure 8 It is a schematic diagram of the three-dimensional structure of the second table top body of the present invention.

[0039] In the figure: 1. table board body; 2. support rod; 3. support seat; 4. first empty slot; 5. second empty slot; 6. top cover; 7. handle; 8. first twist; 9. first threaded rod; 10. moving block; 11. support plate; 12. connecting rod; 13. second twist; 14. first rotating shaft; 15. first bevel gear; 16. second bevel gear; 17. threaded sleeve; 18. fixing rod; 19. second threaded rod; 20. first table board body; 21. second table board body; 22. sliding block; 23. folding cup sleeve; 24. concave and convex surface. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-7 , the present invention provides a technical solution:

[0042] A multifunctional folding table top comprises a table top body 1, support rods 2 are rotatably connected and installed on both left and right sides of the rear side of the table top body 1, and the support rods 2 are rotatably connected to the support seat 3, and the rear side of the support seat 3 is fixed below the backrest of a high-speed rail seat, a first empty slot 4 is arranged at the upper part of the interior of the table top body 1, and a second empty slot 5 is arranged at the lower part of the interior of the table top body 1, and the second empty slot 5 is located below the first empty slot 4, a first twist 8 is arranged in the middle of the front side of the table top body 1, and the first twist 8 is located in front of the first empty slot 4, a top cover 6 is arranged on the rear side of the upper surface of the first empty slot 4, and a support plate 11 is arranged below the top cover 6, a second twist 13 is arranged at the bottom of the table top body 1, and the second twist 13 is located in the middle of the bottom of the second empty slot 5, and the first table top body 20 and the second table top body 21 are arranged on both sides of the left and right sides of the second empty slot 5.

[0043] A top cover 6 is provided on the rear side of the upper surface of the table board body 1, and a handle 7 is fixedly installed on the rear side of the upper surface of the top cover 6, and the top cover 6 is located above the first slot 4 to form a forward and backward moving structure. The top cover 6 can be driven to move on the upper surface of the table board body 1 by manually pulling the handle 7. When the top cover 6 moves to the front, the rear side of the first slot 4 can be opened, so that the internal support plate 11 can be propped up for the use of a mobile phone.

[0044] The first threaded rod 9 is fixedly connected to the rear side of the first twist 8, and the rear end of the first threaded rod 9 is connected to the rear side of the first slot 4 to form a rotating structure, and the outer side of the rear of the first threaded rod 9 is threadedly connected and installed with a moving block 10 to form a forward and backward moving structure. A support plate 11 is movably connected and installed above the moving block 10, and connecting rods 12 are movably connected and installed on both the left and right sides of the support plate 11, and the rear ends of the connecting rods 12 are movably connected to the left and right sides of the rear side of the first slot 4. When the first twist 8 is manually rotated, the first threaded rod 9 is driven to rotate, and then the moving block 10 threadedly connected to the first threaded rod 9 moves forward and backward on the bottom surface of the first slot 4, which is convenient for the support of the support plate 11 to provide mechanical power. When the moving block 10 moves forward and backward, the support plate 11 can be driven to prop up by the rotation of the connecting rod 12, and the moving block 10 is threadedly connected to the first threaded rod 9, and the support plate 11 is stable when it is propped up, which is convenient for use as a mobile phone holder, providing convenience for passengers.

[0045] The upper end of the second rotating knob 13 is connected to the first rotating shaft 14, and the first rotating shaft 14 passes through the bottom surface of the table board body 1. The upper end bearing of the first rotating shaft 14 is connected to the top surface of the second slot 5, and the first bevel gear 15 is fixedly connected to the middle of the first rotating shaft 14 to form a rotating structure. The first bevel gear 15 is connected to the second bevel gear 16 on both sides, and the second bevel gear 16 is fixedly connected to the left and right ends. The threaded sleeve 17 passes through the fixed rod 18, and the bottom of the fixed rod 18 is fixed to the bottom surface of the second slot 5 to support the threaded sleeve 17. Manually rotating the second rotating knob 13 can drive the first rotating shaft 14 to rotate, and then drive the first bevel gear 15 to rotate at the same time, providing mechanical power for the first table board body 20 and the second table board body 21 to move and expand to the left and right sides. When the first bevel gear 15 rotates, the second bevel gear 16 connected to its teeth rotates at the same time, thereby driving the threaded sleeve 17 to rotate, providing mechanical power for the first table board body 20 and the second table board body 21 to move and expand to the left and right sides.

[0046] The left and right sides of the threaded sleeve 17 are both threadedly connected and installed with the second threaded rod 19, and the thread directions of the left and right sides of the second threaded rod 19 are opposite, and the left and right sides of the second threaded rod 19 are fixedly connected and installed with the first table board 20 and the second table board 21. The bottom surfaces of the first table board 20 and the second table board 21 are both provided with sliding blocks 22, and the first table board 20 is located inside the second empty slot 5 and moves to the left to expand the use area, and the second table board 21 is located inside the second empty slot 5 and moves to the right to expand the use area. When the threaded sleeve 17 moves, it simultaneously drives the left and right second threaded rods 19 to rotate and move left and right, thereby driving the first table board 20 and the second table board 21 to expand outwards respectively, thereby increasing the use area of ​​the table board body 1 and improving the convenience of passengers.

[0047] A folding cup sleeve 23 is provided in the middle of the first table panel 20, and the folding cup sleeve 23 is made of silicone material, and the folding cup sleeve 23 extends downward to form a space for placing the cup body. A concave-convex surface 24 is provided on the top of the second table panel 21, and the concave-convex surface 24 increases the friction with the placed objects. When the first table panel 20 is pulled out to the left, the folding cup sleeve 23 is pulled down, and a tea cup can be placed inside the folding cup sleeve 23 to prevent the front passenger from touching the tea cup and causing it to fall when adjusting the seat, thereby improving stability. At the same time, the silicone material is used, which has an anti-scalding effect, and its toughness makes it easy to push it up and fold it directly for storage after use. When the second table panel 21 is pulled out to the right, smoother objects can be placed on the top, and the concave-convex surface 24 increases the friction to prevent the objects from slipping, thereby improving the stability of the placed objects.

[0048] Working principle:

[0049] When the present invention is in use, the top cover 6 can be driven to move on the upper surface of the table board body 1 by manually pulling the handle 7. When the top cover 6 moves to the front, the rear position of the first slot 4 can be opened. When the first twist knob 8 is manually rotated, the first threaded rod 9 is driven to rotate, and then the moving block 10 threadedly connected to the first threaded rod 9 moves forward and backward on the bottom surface of the first slot 4. The support plate 11 can be propped up by the rotation of the connecting rod 12. The moving block 10 is threadedly connected to the first threaded rod 9. The propped-up position of the support plate 11 is stable, which is convenient for use as a mobile phone holder. Manually rotating the second twist knob 13 can drive the first rotating shaft 14 to rotate, thereby simultaneously driving the first cone As the gear 15 rotates, the second bevel gear 16 connected to its teeth rotates at the same time, thereby driving the threaded sleeve 17 to rotate, and at the same time driving the two second threaded rods 19 on the left and right to rotate and move left and right, thereby driving the first table panel body 20 and the second table panel body 21 to expand outward respectively, thereby increasing the use area of ​​the table panel body 1 and improving passenger convenience; when the first table panel body 20 is pulled out to the left, the folding cup sleeve 23 is pulled downward, and a tea cup can be placed inside the folding cup sleeve 23 to prevent the front passenger from touching the tea cup and causing it to fall over when adjusting the seat, thereby improving stability. At the same time, it is made of silicone material, which has an anti-scalding effect, and its toughness makes it easy to push it upward and fold it directly for storage after use.

[0050] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional folding table top, comprising a table top body (1), characterized in that: The table board body (1) is rotatably connected to support rods (2) on both left and right sides of the rear side, and the support rods (2) are rotatably connected to the support seat (3), and the rear side of the support seat (3) is fixed below the backrest of the high-speed rail seat. A first empty slot (4) is provided at the upper part of the table board body (1), and a second empty slot (5) is provided at the lower part of the table board body (1), and the second empty slot (5) is located below the first empty slot (4). A first twist (8) is provided in the middle of the front side of the table board body (1), and the first twist (8) is located in front of the first empty slot (4). A top cover (6) is provided on the rear side of the upper surface of the first empty slot (4), and a support plate (11) is provided below the top cover (6). A second twist (13) is provided at the bottom of the table board body (1), and the second twist (13) is located in the middle of the bottom of the second empty slot (5). The first table board body (20) and the second table board body (21) are provided on both left and right sides of the second empty slot (5).

2. The multifunctional folding table according to claim 1, characterized in that: A top cover (6) is provided on the rear side of the upper surface of the table top body (1), and a handle (7) is fixedly installed on the rear side of the upper surface of the top cover (6), and the top cover (6) is located above the first empty slot (4) to form a forward and backward moving structure.

3. The multifunctional folding tabletop according to claim 1, characterized in that: The first turning knob (8) is fixedly connected to a first threaded rod (9) at its rear side, and the rear end of the first threaded rod (9) is connected to the rear side of the first slot (4) to form a rotating structure, and a moving block (10) is threadedly connected and installed on the rear outer side of the first threaded rod (9) to form a forward and backward moving structure.

4. The multifunctional folding table top according to claim 3, characterized in that: A support plate (11) is movably mounted above the moving block (10), and connecting rods (12) are movably mounted on both left and right sides of the support plate (11), and the rear ends of the connecting rods (12) are movably connected to the left and right sides of the rear side inside the first empty slot (4).

5. The multifunctional folding table according to claim 1, characterized in that: The upper end of the second rotating shaft (13) is connected to a first rotating shaft (14), and the first rotating shaft (14) passes through the bottom surface of the table top body (1). The upper end bearing of the first rotating shaft (14) is connected to the inner top surface of the second hollow groove (5), and a first bevel gear (15) is fixedly connected and installed in the middle of the first rotating shaft (14) to form a rotating structure.

6. The multifunctional folding tabletop according to claim 5, characterized in that: The first bevel gear (15) is toothedly connected to a second bevel gear (16) on both sides, and the second bevel gear (16) is fixedly connected to a threaded sleeve (17) on both ends, the threaded sleeve (17) passes through a fixed rod (18), and the bottom of the fixed rod (18) is fixed to the bottom surface of the second slot (5) to support the threaded sleeve (17).

7. The multifunctional folding table according to claim 6, characterized in that: The left and right sides of the threaded sleeve (17) are both threadedly connected to install a second threaded rod (19), and the left and right sides of the second threaded rod (19) have opposite thread directions, and the left and right sides of the second threaded rod (19) are both fixedly connected to install the first table panel (20) and the second table panel (21), and the bottom surfaces of the first table panel (20) and the second table panel (21) are both provided with sliding blocks (22), and the first table panel (20) is located inside the second empty slot (5) and moves to the left to expand the use area, and the second table panel (21) is located inside the second empty slot (5) and moves to the right to expand the use area.

8. The multifunctional folding tabletop according to claim 7, characterized in that: A foldable cup sleeve (23) is arranged in the middle of the first table board body (20), and the foldable cup sleeve (23) is made of a silicone material, and the foldable cup sleeve (23) extends downward to form a space for placing a cup body.

9. The multifunctional folding tabletop according to claim 1, characterized in that: A concave-convex surface (24) is provided on the upper side of the second table top body (21), and the concave-convex surface (24) increases friction with placed objects.

Citation Information

Patent Citations

  • Folding dining table

    CN204936895U