Four-section table convenient to package, disassemble and assemble and stable to use

Abstract

The invention discloses a four-section table convenient to package, disassemble and assemble and stable to use, the four-section table comprises a table board and table legs detachably connected with the table board, the table board is formed by splicing two foldable table board units left and right, and each foldable table board unit is formed by hinging two table board subunits front and back; in addition, supporting pieces which are detachably connected are arranged at the bottom of the table board. According to the four-section table, four-section folding type packaging can be achieved, the packaging size can be smaller and neat, and the four-section table has the advantages of being easy to package, box, carry and transport and the like, is good in stability in use, can be rapidly disassembled and assembled without tools, and has the advantage of being convenient to disassemble and assemble; various sales modes such as online sales and overseas sales can be conveniently realized, and the use requirements of outdoor camping can be met; in addition, the invention also has the advantages of simple structure, easy batch production and the like, and not only has obvious practical value, but also has wide application range.

Description

Technical Field

[0001] The invention relates to a four-section table which is convenient for packing and disassembling and stable in use, and belongs to the technical field of furniture design. Background Art

[0002] Tables are commonly used furniture in people's lives. Whether it is a home, leisure place or office place, tables are indispensable. However, the current sales of tables are inseparable from the problems of packaging and transportation. If the model of assembling first and then packaging and transporting as a whole is adopted for sales, although the trouble of users having to assemble by themselves or find professionals can be avoided, there will be problems such as large packaging volume, waste of storage space, easy damage during transportation, and high transportation costs; if the sales model of disassembling and packaging for transportation and then assembling by the destination user is adopted, it will need to be easy to assemble, preferably tool-free assembly, otherwise it will cause assembly troubles for end users, which will affect sales. Therefore, this field needs to develop tables that are easy to package and transport and easy to disassemble and assemble, so that the tables can be conveniently sold online, overseas, and other sales models.

[0003] In addition, with the rise of grassland camping and outdoor camping, people usually need to carry tables for outdoor work and dining. Although the existing folding tables can relatively reduce the storage volume of the table after folding, most of the existing folding tables only fold the table legs to the table top. If the table top is large, there will still be problems such as large packaging volume, inconvenient transportation and carrying, and the table is prone to shaking, moving, and folding during use. There are problems such as poor stability of the table and poor use effect. In addition, there are also problems such as complex structure and troublesome disassembly and assembly. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art and market demand, the object of the present invention is to provide a four-section table which is easy to pack and has a small packaging volume, is easy to transport and carry, has good stability in use and can be quickly disassembled and assembled without tools, and is stable to use.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A four-section table which is easy to pack and disassemble and is stable to use, comprises a table top and table legs detachably connected to the table top, wherein the table top is formed by two foldable table top units spliced ​​together left and right, and each of the foldable table top units is formed by two table top sub-units hinged front and back; and a detachably connected support is provided at the bottom of the table top.

[0007] In one embodiment, the support member is at least one X-direction reinforcing rib.

[0008] In another embodiment, the support member is a rectangular support frame.

[0009] In one embodiment, the support member is detachably connected to a fixing member fixed at the bottom of each table top sub-unit.

[0010] In one embodiment, the fixing member is any one of a fixing rod, a fixing ear, a fixing column or a fixing block.

[0011] In one embodiment, the fixing rod is in the shape of a straight rod or a bent rod with an obtuse angle.

[0012] In a preferred embodiment, the support member and the fixing member are connected via a hand screw.

[0013] In one implementation scheme, a U-shaped opening is provided at the center of the inner side frames of the two foldable table top units, and the left and right U-shaped openings are spliced ​​together to form a central through hole, and a detachable locking fixture is provided in the central through hole.

[0014] In one embodiment, the locking fixture is composed of a T-shaped hole plug, a hole cover and a locking threaded sleeve, wherein the hole cover is detachably connected to the top of the T-shaped hole plug, and the locking threaded sleeve is threadedly connected to the bottom of the T-shaped hole plug.

[0015] In one implementation scheme, the table top is formed by two foldable table top units being spliced ​​together by left and right plugging.

[0016] A preferred solution is that each foldable table top unit is formed by table top sub-unit A and table top sub-unit B being hinged front and back, wherein the inner side frame of table top sub-unit A is provided with a plurality of plug-in columns, and the inner side frame of table top sub-unit B is provided with a plurality of plug-in holes compatible with the plug-in columns.

[0017] In one implementation manner, the table legs and the table top are connected by threads.

[0018] In one implementation manner, a table leg fixing plate is fixedly provided at the bottom of each of the four corners of the table top, and a table leg is threadedly connected to each of the table leg fixing plates.

[0019] In a preferred embodiment, each table leg fixing plate is the hypotenuse of an isosceles right triangle at a table corner, a threaded hole is provided at the center of each table leg fixing plate, and a threaded column matched with the threaded hole is provided at the top of each table leg.

[0020] In a preferred embodiment, an adjustable foot pad is provided at the bottom of each table leg.

[0021] Compared with the prior art, the beneficial technical effects of the present invention are:

[0022] The four-section table provided by the present invention is easy to pack and disassemble and is stable to use. Through ingenious structural design, it can not only realize four-section foldable packaging, but also make the packaging volume smaller and more regular, and has the advantages of easy packaging and boxing, easy carrying and transportation, but also has good stability when in use, and can realize tool-free quick disassembly and assembly, and has the advantage of convenient disassembly and assembly. It can facilitate various sales modes such as online sales and overseas sales, and can also meet the needs of outdoor camping. In addition, the present invention also has the advantages of simple structure and easy batch production. Therefore, compared with the prior art, the present invention not only has significant practical value, but also has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a four-section table that is easy to pack and disassemble and stable to use, provided in Embodiment 1 of the present invention;

[0024] Figure 2 yes Figure 1 The schematic diagram of the structure of the four-section table shown when it is inverted;

[0025] Figure 3 is a schematic structural diagram of the rectangular support frame described in Example 1;

[0026] Figure 4 is a structural schematic diagram of the left foldable table unit described in Example 1;

[0027] Figure 5 is a schematic structural diagram of the right foldable table unit described in Example 1;

[0028] Figure 6 is a schematic structural diagram of the table board subunit A described in Example 1;

[0029] Figure 7 is a schematic diagram of the structure of the table board subunit B described in Example 1;

[0030] Figure 8 is a schematic structural diagram of the locking fixture described in Example 1;

[0031] Fig. 9 It is a schematic diagram of the assembly structure between the locking fixture and the top surface of the central through hole in Embodiment 1;

[0032] Fig.10 It is a schematic diagram of the assembly structure between the locking fixture and the bottom surface of the central through hole in Embodiment 1;

[0033] Fig.11 This is a state diagram of the four-section table described in Example 1 when being folded and stored;

[0034] Fig.12is a state diagram of the four-section table described in Example 1 when the table top is assembled;

[0035] Fig.13 is a state diagram of the four-section table described in Example 1 when the rectangular support frame is assembled;

[0036] Fig.14 is a state diagram of the four-section table described in Example 1 when the table legs are assembled;

[0037] Fig.15 is a state diagram of the four-section table described in Example 1 when assembling the T-hole plug in the locking fixture;

[0038] Fig.16 is a state diagram of the four-section table described in Example 1 when assembling the locking threaded sleeve in the locking fixture;

[0039] Fig.17 This is a schematic diagram of the structure of a four-section table in an inverted state, which is convenient for packaging and disassembly and stable to use, provided in Embodiment 2 of the present invention;

[0040] Fig.18 yes Fig.17 An exploded structural diagram of a four-section table that is easy to pack and disassemble and stable to use;

[0041] Fig.19 yes Fig.17 A bottom view of a four-section table that is easy to pack and disassemble and stable to use;

[0042] Fig. 20 is a schematic structural diagram of the right foldable table unit described in Example 2;

[0043] Fig.21 is a state diagram of the right foldable table board unit in Example 2 when the table legs are folded and stored;

[0044] Fig. 22 This is a state diagram of the four-section table described in Example 2 when it is folded and stored;

[0045] The numbers in the figure are as follows: 1. Table top; 1-1. Left foldable table top unit; 1-11. Inner frame of left foldable table top unit; 1-111. U-shaped opening on the inner frame of left foldable table top unit; 1-2. Right foldable table top unit; 1-21. Inner frame of right foldable table top unit; 1-211. U-shaped opening on the inner frame of right foldable table top unit; 1-3. Center through hole; 1-4. Plug-in column; 1-5. Plug-in hole; A. Table top subunit with plug-in column on the inner frame; B. Table top subunit with plug-in hole on the inner frame; 2. Table legs; 2-1. Threaded column; 2-2. Adjustable foot pad; 3. Fixed Rod; 3a1, fixing rod located at the bottom of the left table board subunit A; 3a2, fixing rod located at the bottom of the right table board subunit A; 3b1, fixing rod located at the bottom of the left table board subunit B; 3b2, fixing rod located at the bottom of the right table board subunit B; 3-1, straight arm; 3-2, inclined arm; 4, rectangular support frame; 4-1, left bracket; 4-2, right bracket; 4-3, front bracket; 4-4, rear bracket; 5, hand screw; 6, locking fastener; 6-1, T-type hole plug; 6-11, groove; 6-2, hole cover; 6-21, cover top; 6-3, locking threaded sleeve; 6-31, flange; 7, table leg fixing plate; 7-1, threaded hole. DETAILED DESCRIPTION

[0046] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. In addition, it should be noted that the terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. Unless otherwise defined, the technical terms or scientific terms used in the present invention should be the usual meanings understood by people with general skills in the field. The orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", etc. are all based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limitations on the present invention; in addition, in the present invention, the horizontal transverse direction is defined as the X direction, the horizontal longitudinal direction is defined as the Y direction, the two end sides of the X direction are defined as the left and right sides, and the two end sides of the Y direction are defined as the front and rear sides.

[0047] Example 1

[0048] Please combine Figures 1 to 10As shown, the present embodiment provides a four-section table which is easy to pack and disassemble and is stable to use, including a table top 1 and table legs 2 which are detachably connected to the table top 1. The table top 1 is formed by two foldable table top units spliced ​​together on the left and right. For the convenience of description, the present embodiment marks the left foldable table top unit as 1-1 and the right foldable table top unit as 1-2. The foldable table top units 1-1 and 1-2 are both formed by two table top sub-units hinged front and back. For the convenience of description, one of the table top sub-units is marked as A and the other table top sub-unit is marked as B.

[0049] In this embodiment, a straight rod-shaped fixing rod 3 is fixed at the bottom of each table board subunit. For the convenience of description, the fixing rod at the bottom of the left table board subunit A is marked as 3a1, the fixing rod at the bottom of the right table board subunit A is marked as 3a2, the fixing rod at the bottom of the left table board subunit B is marked as 3b1, and the fixing rod at the bottom of the right table board subunit B is marked as 3b2. A rectangular support frame 4 is detachably connected between the fixing rods 3a1 and 3a2 and between 3b1 and 3b2. Through the fixed connection between the rectangular support frame 4 and the fixing rod 3, the four-section table can have very good stability when in use, thereby effectively avoiding the unstable conditions such as shaking, moving, and folding existing in the existing folding table. However, it should be noted that the fixing rod 3 fixed at the bottom of each table board subunit can also be replaced by a fixing block or a fixing ear or a fixing column, as long as it can be detachably connected to the rectangular support frame 4 by a hand screw; in addition, the rectangular support frame 4 in this embodiment can also be replaced by at least one X-direction reinforcing rib. In this embodiment, the support member adopts a rectangular support frame 4 instead of a single longitudinal reinforcing rib, which not only simplifies the disassembly and assembly operation, but also ensures higher stability. In addition, the table board 1 is not limited to the rectangular shape shown in the figure, but can also be a circular, elliptical or other shape.

[0050] As a preferred embodiment, the left and right side brackets of the rectangular support frame 4 are respectively connected to their corresponding fixing rods 3 by hand screws 5, and the front and rear side brackets of the rectangular support frame 4 are respectively connected to the inner side frame of a foldable table board unit by hand screws 5; specifically, in this embodiment, the left side bracket 4-1 of the rectangular support frame 4 and its corresponding fixing rods 3a1 and 3b1, the right side bracket 4-2 of the rectangular support frame 4 and its corresponding fixing rods 3a2 and 3b2, and the front side bracket 4-3 of the rectangular support frame 4 and the inner side frame of a foldable table board unit (the example in the figure is the inner side frame 1-21 of the right foldable table board unit, but it is not limited to This design can also be that the inner frame 1-11 of the left foldable table unit), the rear bracket 4-4 of the rectangular support frame 4 and the inner frame of another foldable table unit (because the example in the figure shows that the front bracket 4-3 is connected to the inner frame 1-21 of the right foldable table unit, therefore, the rear bracket 4-4 in this embodiment is connected to the inner frame 1-11 of the left foldable table unit; the reverse design is also possible, that is: the front bracket 4-3 is connected to the inner frame 1-11 of the left foldable table unit, and the rear bracket 4-4 is connected to the inner frame 1-21 of the right foldable table unit) are all detachably connected by hand screws 5. Fixing the rectangular support frame 4 by hand screws 5 will have the advantage of easy disassembly and assembly, and the rectangular support frame 4 can be disassembled and assembled without tools.

[0051] Please combine again Figure 1 and Figure 2 and Figure 4 and Figure 5 As shown, in this embodiment, a U-shaped opening is provided at the center of the inner side frames of the two foldable table board units. Specifically, a U-shaped opening 1-111 is provided at the center of the inner side frame 1-11 of the left foldable table board unit, and a U-shaped opening 1-211 is provided at the center of the inner side frame 1-21 of the right foldable table board unit. The left and right U-shaped openings 1-111 and 1-211 are spliced ​​to form a central through hole 1-3, and a detachable locking fixture 6 is provided in the central through hole 1-3. By providing the central locking fixture 6 at the center of the table board 1, on the one hand, the stability of the splicing of the left foldable table board unit 1-1 and the right foldable table board unit 1-2 can be further strengthened, thereby further ensuring that the four-section table has a better stability effect when it is unfolded and used; on the other hand, it can be achieved that when the table is used outdoors, an umbrella can be fixed above the table.

[0052] Please combine again Figure 1 and Figure 2 and Figures 8 to 10As shown, in this embodiment, the locking fixing member 6 is composed of a T-type hole plug 6-1, a hole cover 6-2 and a locking threaded sleeve 6-3, the hole cover 6-2 is detachably connected to the top of the T-type hole plug 6-1, and the locking threaded sleeve 6-3 is threadedly connected to the lower part of the T-type hole plug 6-1; specifically, the outer diameter of the end of the T-type hole plug 6-1 is larger than the aperture of the central through hole 1-3, the top of the T-type hole plug 6-1 is provided with a groove 6-11, the hole cover 6-2 is provided with a cover top 6-21, the diameter of the cover top 6-21 is adapted to the diameter of the groove 6-11, the upper end of the locking threaded sleeve 6-3 is provided with an outwardly extending flange 6-31, the diameter of the flange 6-31 is larger than the aperture of the central through hole 1-3, the lower end of the T-type hole plug 6-1 passes through the central through hole 1-3, and the locking threaded sleeve 6-3 is threadedly connected to the T-type hole plug 6-1 located at the bottom of the central through hole 1-3.

[0053] Please combine again Figures 4 to 7 and Fig.12 As shown, in the present embodiment, the table top 1 is formed by two foldable table top units 1-1 and 1-2 being spliced ​​by left and right plugging. The splicing by plugging has the advantage of quick assembly and disassembly. In addition, the foldable table top units 1-1 and 1-2 are both formed by table top sub-unit A and table top sub-unit B being hinged front and back, wherein the inner side frame of the table top sub-unit A is provided with a plurality of plug-in columns 1-4, and the inner side frame of the table top sub-unit B is provided with a plurality of plug-in holes 1-5 matched with the plug-in columns 1-4. Through this design, only two specifications of table top units, namely, table top sub-unit A and table top sub-unit B, need to be produced, and the foldable table top units 1-1 and 1-2 can be hingedly obtained, which makes industrial manufacturing more convenient and is conducive to modular production.

[0054] In addition, in this embodiment, the table legs 2 and the table top 1 are connected by threads. Figure 2 and Fig.14 As shown, a table leg fixing plate 7 is fixedly provided at the bottom of each of the four corners of the table board 1, and a table leg 2 is threadedly connected to each table leg fixing plate 7. As a preferred solution, each table leg fixing plate 7 is the hypotenuse of an isosceles right triangle at a table corner, a threaded hole 7-1 is provided at the center of each table leg fixing plate 7, and a threaded column 2-1 matched with the threaded hole 7-1 is provided at the top of each table leg 2, so that the table leg 2 and the table leg fixing plate 7 are threadedly connected, making it very convenient to disassemble and assemble the table leg 2. In addition, as a preferred solution, an adjustable foot pad 2-2 is provided at the bottom of each table leg 2 to facilitate adjusting the installation height of the table leg 2 to better adapt to the ground with different flatness, thereby ensuring the stability of the table.

[0055] When the four-section table provided in this embodiment is packaged, it is only necessary to manually rotate and disassemble the table legs 2 and manually rotate the hand screws 5 to disassemble the rectangular support frame 4, and then fold the foldable table board units 1-1 and 1-2 toward each other and stack them after folding, and then place the disassembled rectangular support frame 4 on top of the stacked table board sub-units, and place the disassembled table legs 2 next to the stacked table board sub-units, such as Fig.11 As shown, the final packaging is done. Fig.11 As shown, this embodiment allows the table to be folded into four sections, which can significantly reduce the packaging volume, and has a regular shape, which is very convenient for packing and transporting.

[0056] When the table needs to be assembled for use, it is only necessary to open the package, take out the table legs 2 and the rectangular support frame 4, and then unfold the foldable table board units 1-1 and 1-2 and make them face up. Fig.12 As shown, the plug-in posts 1-4 on the inner frame of the table board subunit A on the left are plugged into the plug-in holes 1-5 on the inner frame of the table board subunit B on the right, and the plug-in posts 1-4 on the inner frame of the table board subunit A on the right are plugged into the plug-in holes 1-5 on the inner frame of the table board subunit B on the left, and the plug-in posts 1-4 on the inner frame of the table board subunit A on the right are plugged into the plug-in holes 1-5 on the inner frame of the table board subunit B on the left. Fig.13 The table top 1 shown in the figure is then fixedly connected by hand screws 5 between the left side bracket 4-1 of the rectangular support frame 4 and its corresponding fixing rods 3a1 and 3b1, between the right side bracket 4-2 of the rectangular support frame 4 and its corresponding fixing rods 3a2 and 3b2, between the front side bracket 4-3 of the rectangular support frame 4 and the inner side frame 1-21 of the right side foldable table top unit, and between the rear side bracket 4-4 of the rectangular support frame 4 and the inner side frame 1-11 of the left side foldable table top unit; as shown in the figure Fig.14 As shown, the threaded column 2-1 on the table leg 2 is screwed into the threaded hole 7-1 on the corresponding table leg fixing plate 7 and tightened, so that all the table legs 2 are assembled; Fig.15 As shown, the table body is placed on its side, and the T-shaped hole plug 6-1 is inserted from the top surface of the central through hole 1-3 until the end surface of the T-shaped hole plug 6-1 abuts against the top surface of the central through hole 1-3 (as shown in FIG. Fig. 9 as shown); Fig.16 As shown, the locking thread sleeve 6-3 is threadedly connected to the T-type hole plug 6-1 located at the bottom of the central through hole 1-3 until the upper end flange 6-31 of the locking thread sleeve 6-3 abuts against the bottom surface of the central through hole 1-3 (as shown in FIG. Fig.10 Finally, straighten the table and cover the hole cover 6-2 to obtain Figure 1The table shown in the figure can be used. Because the table top 1 at this time not only has the support and reinforcement function of the fixing rod 3 and the rectangular support frame 4 at the bottom, but also has a locking fixing part 6 at the center of the table top 1 to further strengthen the fixing function of the joint between the left foldable table top unit 1-1 and the right foldable table top unit 1-2, so that the assembled four-section table has very high stability and load-bearing performance, which can completely overcome the instability defect of the existing folding table.

[0057] Example 2

[0058] Please combine Figures 17 to 20 As shown, the difference between this embodiment and embodiment 1 is that: the fixing rod 3 fixed at the bottom of each table board sub-unit is in the shape of an obtuse-angled bending rod, and is composed of a straight arm 3-1 and an inclined arm 3-2, and the opening of the bending rod faces the inner frame; the left bracket 4-1 of the rectangular support frame 4 is connected to the straight arm 3-1 of the corresponding fixing rod 3a1 and 3b1, and the right bracket 4-2 of the rectangular support frame 4 is connected to the straight arm 3-1 of the corresponding fixing rod 3a2 and 3b2 through a hand screw 5; the rest of the structural contents are the same as described in embodiment 1.

[0059] In this embodiment, the fixing rod 3 is changed from the straight rod shape in the embodiment 1 to a bent rod shape with an obtuse angle, so that the foldable table plate unit can form a storage space for accommodating the table legs after being folded. Fig.21 As shown, each foldable table board unit can be folded toward each other to store two table legs respectively, thereby obtaining Fig. 22 Compared with the structural design of Example 1, the folded storage state shown in this embodiment not only further reduces the packaging volume, making the packaging shape more regular and easier to pack, but also protects the table legs from being damaged by collision during transportation.

[0060] It should also be noted that the disassembly and assembly operations of the four-section table described in this embodiment are exactly the same as those described in Example 1.

[0061] From the above, it can be seen that the four-section table provided by the present invention, through ingenious structural design, can not only realize four-section folding packaging, but also make the packaging volume smaller and more regular, and has the advantages of easy packaging and boxing, easy to carry and transport, but also has good stability during use, and can realize tool-free quick disassembly and assembly, which can facilitate various sales modes such as online sales and overseas sales, and can also meet the needs of outdoor camping. In addition, the present invention also has the advantages of simple structure and easy mass production. Therefore, compared with the prior art, the present invention not only has significant practical value, but also has a wide range of applications.

[0062] Finally, it is necessary to point out here that the above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A four-section table that is easy to pack and disassemble and is stable to use, comprising a table top and table legs detachably connected to the table top, characterized in that: The table top is formed by two foldable table top units spliced ​​together left and right, and each of the foldable table top units is formed by two table top sub-units hinged front and back; and a detachably connected support member is provided at the bottom of the table top.

2. The four-section table that is easy to pack and disassemble and stable to use according to claim 1 is characterized by: The support member is at least one X-direction reinforcing rib or a rectangular support frame.

3. The four-section table that is easy to pack and disassemble and stable to use according to claim 1 is characterized in that: The support member is detachably connected to a fixing member fixed at the bottom of each table board sub-unit.

4. The four-section table that is easy to pack and disassemble and stable to use according to claim 3 is characterized in that: The fixing member is any one of a fixing rod, a fixing ear, a fixing column or a fixing block.

5. The four-section table that is easy to pack and disassemble and stable to use according to claim 4 is characterized in that: The fixing rod is in the shape of a straight rod or a bent rod with an obtuse angle.

6. The four-section table that is easy to pack and disassemble and stable to use according to claim 3 is characterized in that: The support member and the fixing member are connected via hand screws.

7. The four-section table that is easy to pack and disassemble and stable to use according to claim 1 is characterized in that: A U-shaped opening is provided at the center of the inner side frames of the two foldable table board units. The left and right U-shaped openings are spliced ​​together to form a central through hole. A detachable locking fixture is provided in the central through hole.

8. The four-section table that is easy to pack and disassemble and stable to use according to claim 7 is characterized in that: The locking fixing piece is composed of a T-shaped hole plug, a hole cover and a locking threaded sleeve. The hole cover is detachably connected to the top of the T-shaped hole plug, and the locking threaded sleeve is threadedly connected to the bottom of the T-shaped hole plug.

9. The four-section table that is easy to pack and disassemble and stable to use according to claim 1 is characterized in that: The table top is formed by splicing two foldable table top units by left and right plugging.

10. The four-section table that is easy to pack and disassemble and stable to use according to claim 9, characterized in that: Each foldable table top unit is formed by table top sub-unit A and table top sub-unit B being hinged front and back, wherein the inner side frame of table top sub-unit A is provided with a plurality of plug-in columns, and the inner side frame of table top sub-unit B is provided with a plurality of plug-in holes which are compatible with the plug-in columns.

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