Table frame and table having same
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2026-08-13
Smart Images

Figure CN2025096606_13082026_PF_FP_ABST
Abstract
Description
Table frame and table with the table frame Technical Field
[0001] This application relates to the field of table technology, and in particular to a table frame and a table having the table frame. Background Technology
[0002] As living standards improve, outdoor activities are becoming increasingly popular. Activities such as camping, outdoor barbecues, and group meals are highly sought after. These outdoor activities often require the use of tables and chairs to set out food or play board games.
[0003] Tables used in outdoor settings such as camping often employ foldable frames for portability. For example, CN219330946U discloses a new type of portable camping table whose frame includes multiple movable linkages, allowing the frame to be folded individually into the form shown in Figure 4 of its instruction manual for easy carrying.
[0004] However, the camping table disclosed in this patent, like most camping tables on the market, only takes into account the ease of carrying after folding. The design goal is to make the folded table frame more compact for easy carrying, with insufficient consideration for the convenience of folding. Technical issues
[0005] This application provides a table frame and a table having the table frame, which can be folded with one hand. Technical solutions
[0006] To achieve the above objectives, this application first provides a table frame, which includes a first rod group, a second rod group, a third rod group, and a fourth rod group for supporting the tabletop on an external plane, as well as a folding assembly and a linkage rod group, wherein:
[0007] Each rod group includes two rods rotatably connected at one end. The first rod group and the second rod group are rotatably connected at the rotatably connected end of the rods to form a first support frame. The third rod group and the fourth rod group are rotatably connected at the rotatably connected end of the rods to form a second support frame.
[0008] The linkage group is disposed between the first support frame and the second support frame, and has an unfolded state and a folded state. In the unfolded state, the linkage group can spread the first support frame and the second support frame apart by a preset distance. In the folded state, the linkage group can make the first support frame and the second support frame relatively close together.
[0009] The folding assembly includes a flexible main body, four folding drive rods, and four drive sliders rotatably connected to one end of each of the four folding drive rods. The other end of each of the four folding drive rods is rotatably connected to one rod in each rod group. The drive sliders are slidably connected to another rod in each rod group. The four drive sliders are fixed relative to the main body. The linkage rod group is connected to the drive sliders to switch from the unfolded state to the folded state as the drive sliders slide.
[0010] Furthermore, the table frame includes two sets of linkage rods spaced apart, wherein: a set of linkage rods is provided between the first rod set and the third rod set; and a set of linkage rods is provided between the second rod set and the fourth rod set.
[0011] Furthermore, the first rod group includes a first rod and a second rod that are rotatably connected; the second rod group includes a third rod and a fourth rod that are rotatably connected; the third rod group includes a fifth rod and a sixth rod that are rotatably connected; and the fourth rod group includes a seventh rod and an eighth rod that are rotatably connected. The first rod, the third rod, the fifth rod, and the seventh rod together support the tabletop; the lower ends of the second rod, the fourth rod, the sixth rod, and the eighth rod together support the external plane.
[0012] Further, the linkage group includes a first linkage rod and a second linkage rod that are cross-connected and rotatably connected at the intersection, wherein: in the linkage group disposed between the first linkage group and the third linkage group, the upper end of the first linkage rod is rotatably connected to the driving slider slidably connected to the second rod, the lower end of the first linkage rod is rotatably connected to the sixth rod, the upper end of the second linkage rod is rotatably connected to the driving slider slidably connected to the sixth rod, and the lower end of the second linkage rod is rotatably connected to the second rod; in the linkage group disposed between the second linkage group and the fourth linkage group, the upper end of the first linkage rod is rotatably connected to the driving slider slidably connected to the eighth rod, the lower end of the first linkage rod is rotatably connected to the fourth rod, the upper end of the second linkage rod is rotatably connected to the driving slider slidably connected to the fourth rod, and the lower end of the second linkage rod is rotatably connected to the eighth rod.
[0013] Furthermore, the table frame also includes two sets of auxiliary support rods respectively connected between the first rod and the fifth rod, and between the third rod and the seventh rod. Each auxiliary support rod set includes a first support rod and a second support rod rotatably connected at one end, wherein: in one set of auxiliary support rods, the other ends of the first support rod and the second support rod are rotatably connected to the first rod and the fifth rod, respectively; in the other set of auxiliary support rods, the other ends of the first support rod and the second support rod are rotatably connected to the third rod and the seventh rod, respectively.
[0014] Furthermore, a pivot connector is provided on the first rod, the third rod, the fifth rod, and the seventh rod, and the first support rod, the second support rod, and the four stacking drive rods are all rotatably connected to the pivot connector.
[0015] Furthermore, each of the rods used to slidably connect the drive slider is provided with a groove for guiding the drive slider to slide along the length direction of the corresponding rod.
[0016] Furthermore, the folding assembly also includes a lifting portion fixed to the upper side of the main body, the lifting portion being used to lift the main body upward to drive the four driving sliders to slide.
[0017] Furthermore, the main body is configured as a flexible cloth block, and flexible connecting rings are fixed at the four corners of the cloth block. The four driving sliders are respectively connected to the main body through the four connecting rings. When the table frame is in a folded state, the main body can surround all the rods and fix the table frame in the folded state through a fixed connector.
[0018] A second aspect of this application also provides a table comprising a table frame as described in any of the above claims, and a tabletop, the tabletop being configured as a rollable and foldable flexible tabletop. Beneficial effects
[0019] The technical solutions provided by the embodiments of this application may include the following beneficial effects:
[0020] When folding the table frame, the user pulls the main body of the folding assembly in one direction, causing four drive sliders fixed relative to the main body to slide on four rods. The sliding of the four drive sliders then drives the four folding drive rods to move, causing the two rods in each rod group to rotate relative to each other and come closer together. At the same time, the sliding of the drive sliders also causes the linkage rod group to switch to the folding state, thus bringing the two support frames closer together. In this state, when the main body is pulled further, the first and third rod groups come closer together under the action of gravity, and the second and fourth rod groups come closer together under the action of gravity, thus causing the eight rods in the four rod groups to fold together, completing the folding of the table frame. During this folding process, the user only needs to pull the main body to complete the folding of the table frame, which can be done by one person or even one hand. Moreover, the folded table frame is also small in size and easy to carry.
[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0022] Figure 1 is a structural schematic diagram of a table according to an embodiment of this application;
[0023] Figure 2 is a front view of the table shown in Figure 1;
[0024] Figure 3 is a bottom view of the table shown in Figure 1;
[0025] Figure 4 is a structural schematic diagram of a table frame according to an embodiment of this application;
[0026] Figure 5 is a schematic diagram of an intermediate state of the table frame shown in Figure 4 during the folding process;
[0027] Figure 6 is a left view of the table frame shown in Figure 4 in the middle state shown in Figure 5;
[0028] Figure 7 is a top view of the table frame shown in Figure 4 in the intermediate state shown in Figure 5;
[0029] Figure 8 is a schematic diagram of the table frame shown in Figure 4 in a folded state.
[0030] Explanation of reference numerals in the attached figures
[0031] 100. Table frame; 11. First linkage group; 111. First linkage; 112. Second linkage; 113. First rotating connector; 12. Second linkage group; 121. Third linkage; 122. Fourth linkage; 123. Second rotating connector; 13. Third linkage group; 131. Fifth linkage; 132. Sixth linkage; 1321. Slide groove; 133. Third rotating connector; 14. Fourth linkage group; 141. Seventh linkage; 142. Eighth rod; 143. Fourth rotating connector; 15. Folding assembly; 151. Main body; 152. Lifting part; 153. Drive slider; 154. Folding drive rod; 155. Fixed connector; 16. Linkage rod group; 161. First linkage rod; 162. Second linkage rod; 17. Auxiliary support rod group; 171. First support rod; 172. Second support rod; 18. Pivoting connector; 200. Tabletop. Embodiments of the present invention
[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The modes described in the following exemplary embodiments do not represent all modes consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0033] The embodiments of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.
[0034] As shown in Figures 1 and 2, an embodiment of this application first provides a table, which includes a table frame 100 and a tabletop 200, wherein the table frame 100 supports the tabletop 200 on an external plane. In the illustrated embodiment, the tabletop 200 is configured as a flexible, rollable, and foldable tabletop, thus forming a table that can be used as a commonly used egg roll table in camping settings.
[0035] It is understood that in other embodiments, the tabletop 200 may also adopt other forms of foldable or non-foldable plate-like support structure, as long as it can meet the requirement of forming a tabletop that can be used to place items on the table frame 100 or above.
[0036] As shown in Figure 4, an embodiment of this application also provides a table frame 100, which can be used as the table frame 100 in Figures 1 to 3. The table frame 100 includes four sets of rods with substantially the same structure, namely a first rod set 11, a second rod set 12, a third rod set 13, and a fourth rod set 14. The table frame 100 also includes a folding assembly 15 and a linkage rod set 16.
[0037] Each linkage group includes two rods rotatably connected at one end. The first linkage group 11 and the second linkage group 12 are rotatably connected at the ends where the rods are rotatably connected to form a first support frame. Similarly, the third linkage group 13 and the fourth linkage group 14 are also rotatably connected at the ends where the rods are rotatably connected to form a second support frame. Referring to the embodiment shown in Figure 3, along the width direction of the tabletop 200 in the figure, the first support frame and the second support frame are spaced apart from each other on the left and right, and together support the tabletop 200.
[0038] The linkage assembly 16 is disposed between the first support frame and the second support frame, and the linkage assembly 16 itself has an extended state and a folded state. Based on Figure 4 and combined with Figure 3, when the linkage assembly 16 is in the extended state, it is used to maintain the interval between the first support frame and the second support frame, thereby stably supporting the tabletop 200; in the folded state, the linkage assembly 16 enables the first support frame and the second support frame to move closer together.
[0039] As shown in Figure 4, the folding assembly 15 includes a flexible main body 151, four folding drive rods 154, and four drive sliders 153 rotatably connected to one end of each of the four folding drive rods 154. The other end of each of the four folding drive rods 154 is rotatably connected to one rod in each rod group. The drive sliders 153 are slidably connected to another rod in each rod group. The four drive sliders 153 are fixed relative to the main body 151, so that the four drive sliders 153 can move synchronously with the lifting action of the main body 151. The linkage group 16 is also connected to the drive sliders 153 to switch from the unfolded state to the folded state as the drive sliders 153 slide.
[0040] When the table frame 100 needs to be folded from the fully unfolded state shown in Figure 4 to the folded state shown in Figure 8, the user can lift the main body 151 in one direction. The four drive sliders 153 connected to the main body 151 will slide synchronously on their respective rods. The sliding of each drive slider 153 will cause the connected folding drive rod 154 to rotate around a certain point, thus causing two rods in the four rod groups to rotate to a close-fitting state. Simultaneously, the sliding of the drive sliders 153 will also cause the linkage rod group 16 between the two support frames to switch from the unfolded state to the folded state, so that the first support frame and the second support frame are relatively close together. In this state, when the rest of the table frame 100 is further lifted by the main body 151, the two rotatably connected rod groups take into account each other under their own weight. Thus, the user only needs to lift the main body 151 to fold the table frame 100, making the folding process simple. At the same time, in the folded state, the eight rods of the four rod groups are close together, and the overall size of the table frame 100 is also small, making it convenient to carry and store.
[0041] Referring again to Figure 4, the first rod group 11 includes a first rod 111 and a second rod 112 rotatably connected, with the two rods rotatably connected by a first rotating connector 113; the second rod group 12 includes a third rod 121 and a fourth rod 122 rotatably connected, with the two rods rotatably connected by a second rotating connector 123; the third rod group 13 includes a fifth rod 131 and a sixth rod 132 rotatably connected, with the two rods rotatably connected by a third rotating connector 133; the fourth rod group 14 includes a seventh rod 141 and an eighth rod 142 rotatably connected, with the two rods rotatably connected by a fourth rotating connector 143.
[0042] The first rotating connector 113 is rotatably connected to the second rotating connector 123, thereby making the first rod group 11 and the second rod group 12 rotatably connected; the third rotating connector 133 is rotatably connected to the fourth rotating connector 143, thereby making the third rod group 13 and the fourth rod group 14 rotatably connected.
[0043] Of the eight rods mentioned above, the first rod 111, the third rod 121, the fifth rod 131, and the seventh rod 141 jointly support the tabletop 200 shown in Figures 1 to 3. The four rods are approximately coplanar, ensuring the tabletop 200 is stably supported and the tabletop remains basically level, meeting the user's needs for placing items. The lower ends of the second rod 112, the fourth rod 122, the sixth rod 132, and the eighth rod 142 are jointly supported on the external plane.
[0044] In some embodiments, the table frame 100 includes two sets of linkage groups 16. Referring to the table shown in FIG3, the two sets of linkage groups 16 are spaced apart along the length of the tabletop 200. Referring to the markings in FIG4, taking the linkage group 16 between the first linkage group 11 and the third linkage group 13 as an example, the linkage group 16 includes a first linkage 161 and a second linkage 162 that are arranged in a cross configuration. The two linkages are rotatably connected at the intersection to form a scissor arm structure.
[0045] The upper end of the first linkage rod 161 is rotatably connected to the drive slider 153 slidably connected to the second rod 112; the lower end of the first linkage rod 161 is rotatably connected to the sixth rod 132, and the upper end of the second linkage rod 162 is rotatably connected to the drive slider 153 slidably connected to the sixth rod 132, while the lower end of the second linkage rod 162 is rotatably connected to the second rod 112. Thus, when the drive slider 153 slides on its slidably connected rod, it can drive the first linkage rod 161 and the second linkage rod 162 to rotate relative to each other, thereby switching the linkage rod assembly 16 from the unfolded state to the folded state.
[0046] Similarly, the linkage group 16 located between the second linkage group 12 and the fourth linkage group 14 also includes a first linkage 161 and a second linkage 162 that are arranged in a cross configuration, and the two linkages are rotatably connected at their intersection. Specifically: the upper end of the first linkage 161 is rotatably connected to the drive slider 153 that is slidably connected to the eighth linkage 142, and the lower end of the first linkage 161 is rotatably connected to the fourth linkage 122; the upper end of the second linkage 162 is rotatably connected to the drive slider 153 that is slidably connected to the fourth linkage 122, and the lower end of the second linkage 162 is rotatably connected to the eighth linkage 142.
[0047] It is understandable that a single linkage group 16 can also drive the first support frame and the second support frame to move closer together independently. By using the two linkage groups 16 shown in the figure, the force on each rod of the table frame 100 is more even when it is folded, and the folding effect is more ideal.
[0048] Referring again to Figure 4, the table frame 100 may further include two sets of auxiliary support rods 17 connected between the first rod 111 and the fifth rod 131, and between the third rod 121 and the seventh rod 141, respectively. These two sets of auxiliary support rods 17 assist the two sets of linkage rods 16 to stably maintain the first support frame and the second support frame at a preset distance apart in the unfolded state.
[0049] In the illustrated embodiment, the auxiliary support rod assembly 17 includes a first support rod 171 and a second support rod 172 rotatably connected at one end. Specifically, in the auxiliary support rod assembly 17 disposed between the first rod assembly 11 and the third rod assembly 13, the other ends of the first support rod 171 and the second support rod 172 are rotatably connected to the first rod member 111 and the fifth rod member 131, respectively. Similarly, in the auxiliary support rod assembly 17 disposed between the second rod assembly 12 and the fourth rod assembly 14, the other ends of the first support rod 171 and the second support rod 172 are rotatably connected to the third rod member 121 and the seventh rod member 141, respectively.
[0050] For ease of installation and manufacturing, the table frame 100 may also include four pivot connectors 18, which are fixedly mounted on the first member 111, the third member 121, the fifth member 131, and the seventh member 141, respectively. The four folding drive rods 154 and two support rods in the auxiliary support rod group 17 are rotatably connected to their corresponding members through the pivot connectors 18.
[0051] Furthermore, to guide the drive slider 153 to slide along the length of the corresponding rod and ensure the accuracy of its sliding motion, grooves are provided on the rods on which the drive slider 153 is located. For example, the groove 1321 on the sixth rod 132 is marked in Figure 4. Similar grooves are also provided on the second rod 112, the fourth rod 122, and the eighth rod 142, although not all are shown or marked in the figure.
[0052] The folding assembly 15 also includes a lifting portion 152 fixed to the upper side of the main body 151. This lifting portion 152 is used to lift the main body 151 upwards to drive the four drive sliders 153 to slide. As shown in Figure 4, the main body 151 can be configured as a flexible fabric block, with flexible connecting rings fixed at its four corners. The four drive sliders 153 can be connected to the main body 151 respectively through the four connecting rings. This makes the connection between the main body 151 and the drive sliders 153 more convenient, facilitating the assembly and manufacturing of the entire folding assembly 15.
[0053] In other embodiments, the main body 151 may also be configured as other flexible and foldable components such as a flexible rope, as long as it can connect to the four drive sliders 153 and simultaneously drive the four drive sliders 153 to slide in the manner described above when lifted.
[0054] Furthermore, the lifting section 152 can also be configured as a flexible strip structure. Besides the lifting section 152, this flexible strip can extend to both ends of the main body 151. At each end of the flexible strip, there can be two mating portions of a fixing connector 155, such as a buckle. As shown in Figure 8, when the eight rods are close together and the table frame 100 is in a folded state, the main body 151 can wrap around all the rods, and the table frame 100 is fixed in this folded state by the two mating portions within the fixing connector 155.
[0055] Referring to Figures 5, 6 and 7, the specific folding process of the table frame 100 in this application is given below: After removing the tabletop 200 from the table, since the lifting part 152 is provided on the upper side of the main body 151, the user can lift the lifting part 152 upward from the middle of the area enclosed by the first rod 111, the third rod 121, the fifth rod 131 and the seventh rod 141, thereby lifting the main body 151 upward.
[0056] The deformation process of the main body 151 after being lifted upward is roughly shown in Figure 5. From Figure 4 to Figure 5, as the main body 151 is gradually lifted, the four drive sliders 153 connected to the main body 151 through the four connecting rings slide along their respective slide grooves, and drive the stacking drive rod 154 to rotate around its connection with each pivot connector 18. As the stacking drive rod 154 rotates, the two rods in each rod group move closer to each other. At the same time, the linkage rod group 16 connected to the drive slider 153 also gradually switches to the stacking state, so that the first support frame and the second support frame move closer to each other.
[0057] By continuing to lift the lifting section 152 upwards from the intermediate state shown in Figures 5 and 6, all eight rods can be brought together. In this state, rotating the main body 151 and the flexible band forming the lifting section 152 to one side will fix the two mating parts of the fixing connector 155 relative to each other. This allows the main body 151, which is connected in a ring shape by the fixing connector 155, to surround all the rods, firmly keeping the table frame 100 in this folded state.
[0058] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Although this application has disclosed preferred embodiments as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.
Claims
1. A table frame, characterized in that, The table frame (100) includes a first rod group (11), a second rod group (12), a third rod group (13), and a fourth rod group (14) for supporting the tabletop (200) on the outer plane, as well as a folding assembly (15) and a linkage rod group (16). Each rod group includes two rods rotatably connected at one end. The first rod group (11) and the second rod group (12) are rotatably connected at the rotatably connected end of the rods to form a first support frame. The third rod group (13) and the fourth rod group (14) are rotatably connected at the rotatably connected end of the rods to form a second support frame. The linkage rod group (16) is disposed between the first support frame and the second support frame and has an unfolded state and a folded state. In the unfolded state, the linkage rod group (16) can open the first support frame and the second support frame. At a preset distance, in the folded state, the linkage group (16) enables the first support frame and the second support frame to move closer together; the folding assembly (15) includes a flexible main body (151), four folding drive rods (154), and four drive sliders (153) rotatably connected to one end of the four folding drive rods (154), the other end of the four folding drive rods (154) rotatably connected to one rod in each rod group, and the drive sliders (153) slidably connected to another rod in each rod group. The four drive sliders (153) are fixedly set relative to the main body (151), and the linkage group (16) is connected to the drive sliders (153) so that the drive sliders (153) can slide from the unfolded state to the folded state.
2. The table frame according to claim 1, characterized in that, The table frame (100) includes two sets of linkage rods (16) spaced apart, wherein: a set of linkage rods (16) is provided between the first rod group (11) and the third rod group (13); and a set of linkage rods (16) is provided between the second rod group (12) and the fourth rod group (14).
3. The table frame according to claim 2, characterized in that, The first rod group (11) includes a first rod (111) and a second rod (112) rotatably connected. The second rod group (12) includes a third rod (121) and a fourth rod (122) rotatably connected. The third rod group (13) includes a fifth rod (131) and a sixth rod (132) rotatably connected. The fourth rod group (14) includes a seventh rod (141) and an eighth rod (142) rotatably connected. The first rod (111), the third rod (121), the fifth rod (131), and the seventh rod (141) are used to support the tabletop (200). The lower ends of the second rod (112), the fourth rod (122), the sixth rod (132), and the eighth rod (142) are supported on the external plane.
4. The table frame according to claim 3, characterized in that, The linkage group (16) includes a first linkage (161) and a second linkage (162) that are cross-connected and rotatably connected at the intersection. In the linkage group (16) located between the first linkage group (11) and the third linkage group (13), the upper end of the first linkage (161) is rotatably connected to the drive slider (153) slidably connected to the second rod (112), and the lower end of the first linkage (161) is rotatably connected to the sixth rod (132). The upper end of the second linkage (162) is rotatably connected to the drive slider (153) slidably connected to the sixth rod (132). The lower end of (162) is rotatably connected to the second rod (112); in the linkage rod group (16) set between the second rod group (12) and the fourth rod group (14), the upper end of the first linkage rod (161) is rotatably connected to the driving slider (153) slidably connected to the eighth rod (142), the lower end of the first linkage rod (161) is rotatably connected to the fourth rod (122), the upper end of the second linkage rod (162) is rotatably connected to the driving slider (153) slidably connected to the fourth rod (122), and the lower end of the second linkage rod (162) is rotatably connected to the eighth rod (142).
5. The table frame according to claim 3, characterized in that, The table frame (100) further includes two sets of auxiliary support rod groups (17) respectively connected between the first rod (111) and the fifth rod (131), and between the third rod (121) and the seventh rod (141). Each set of auxiliary support rod groups (17) includes a first support rod (171) and a second support rod (172) rotatably connected at one end. In one set of auxiliary support rod groups (17), the other ends of the first support rod (171) and the second support rod (172) are rotatably connected to the first rod (111) and the fifth rod (131), respectively. In the other set of auxiliary support rod groups (17), the other ends of the first support rod (171) and the second support rod (172) are rotatably connected to the third rod (121) and the seventh rod (141), respectively.
6. The table frame according to claim 5, characterized in that, A pivot connector (18) is provided on the first rod (111), the third rod (121), the fifth rod (131) and the seventh rod (141), and the first support rod (171), the second support rod (172) and the four stacking drive rods (154) are rotatably connected to the pivot connector (18).
7. The table frame according to claim 1, characterized in that, Each rod used for sliding connection of the drive slider (153) is provided with a groove for guiding the drive slider (153) to slide along the length direction of the corresponding rod.
8. The table frame according to any one of claims 1-7, characterized in that, The stacking assembly (15) further includes a lifting part (152) fixed to the upper side of the main body (151), the lifting part (152) being used to lift the main body (151) upward to drive the four driving sliders (153) to slide.
9. The table frame according to claim 8, characterized in that, The main body (151) is set as a flexible cloth block, and flexible connecting rings are fixed at the four corners of the cloth block. The four driving sliders (153) are respectively connected to the main body (151) through the four connecting rings. When the table frame (100) is in the folded state, the main body (151) can surround all the rods and fix the table frame (100) in the folded state through a fixed connector (155).
10. A table, characterized in that, The table includes a table frame (100) as described in any one of claims 1-9, and a tabletop (200) configured as a rollable and foldable flexible tabletop.