A special-shaped curved bamboo table

Abstract

The present application relates to the technical field of bamboo board, and particularly relates to a special-shaped curved bamboo table, which comprises a table leg; the table leg comprises a plurality of main boards, a connecting piece and an even number of auxiliary boards; the main board comprises a first curved portion, and two auxiliary boards are combined to form a connecting board; a thread groove with opposite rotation directions is formed in the side wall of the connecting piece, and a thread groove is formed on the surface of the first curved portion of the main board facing another main board; when the adjacent main boards are connected, the first curved portions of the two adjacent main boards are connected through the rotation of the connecting piece, then one auxiliary board is inserted into the connecting piece after the rotation, and then another auxiliary board is inserted after being lowered in moisture content and being applied with glue; through the thread grooves with opposite rotation directions on the two sides, the connecting efficiency is improved, and locking is facilitated; the central axis of the connecting piece is located on the installation line, the axial tension provided by the connecting piece provides pre-tightening force to prevent rebound and gap; one auxiliary board is inserted first, then fastened, then another auxiliary board is inserted after being lowered in moisture content, and interference fit is formed by water absorption and rebound.

Description

Technical Field

[0001] This invention relates to the field of bamboo board technology, specifically to an irregularly shaped curved bamboo table. Background Technology

[0002] A bamboo table is a table made from bamboo processed into bamboo boards and then further processed. A bamboo table consists of a tabletop and multiple legs. To achieve a supporting effect, the tabletop is generally quite thick and heavy. Consequently, to support the tabletop, the legs also need to be relatively thick (the thickness of the legs is generally ≥4cm). The structure is an L-shaped, irregularly curved structure of bamboo boards. Due to the thinness of bamboo boards, the table legs need to be made of multiple layers of boards or multiple layers of bamboo strips glued together to form a bamboo board to achieve support.

[0003] To process table legs into the L-shaped curved structure, the existing technology mainly uses hot steam heating and plasticization with bending equipment to obtain the irregular curved structure. However, this is only suitable for thinner bamboo / plywood (e.g., less than 1.5cm thick). Once the board is made of multi-layered glued boards (e.g., table legs with a thickness of ≥4cm) and needs to be bent, either higher temperature steam is required for softening, or a longer heating time is needed. Higher temperature steam or longer heating time can easily cause the glue in the plywood to decompose and fail or degrade in performance. At the same time, the steam will also cause the bamboo to absorb water and expand. After bending and drying, it will shrink. Under the combined effect of these two factors, the bamboo boards at the bend will separate from each other, creating gaps and affecting the performance of the board.

[0004] Therefore, a bamboo table is needed that can provide support while avoiding irregular bending caused by gaps. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a bamboo table that can achieve a supporting effect while avoiding irregular bending caused by gaps.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: An irregularly shaped, curved bamboo table, including a tabletop and multiple legs; The table legs consist of multiple main panels, connectors, and an even number of secondary panels; The main board includes a first curved portion; the width of the secondary board is half that of the main board; two secondary boards are assembled and spliced ​​to form a connecting board; the connecting board includes a second curved portion; the two secondary boards have the same thickness when they have the same moisture content. The first and second curved portions have the same curvature and the same center of curvature; the line segment from the curved portion of the main plate to its center of curvature is the mounting line; The connector is columnar, with a load-bearing structure in the middle. Threaded grooves are respectively opened on the outer side walls from the middle to both ends. The structures of the two threaded grooves are mirrored with the middle of the connector as the boundary, so that the two threaded grooves rotate in opposite directions. Threaded grooves are respectively opened on the surface of the first curved part of the adjacent main plate facing the other main plate. The adjacent main plates are connected by the threaded grooves and the threaded grooves of the connectors. The threads in the threaded grooves are correspondingly set with the threaded grooves of the corresponding connectors. The central axis of the two threaded grooves and the central axis of the connector coincide with the installation line; the second curved part is provided with an installation groove for the connector, which is formed by splicing the semi-circular grooves opened on two sub-plates respectively; When connecting adjacent main panels, the first curved parts of two adjacent main panels are connected by rotating the connector. After applying glue to one panel, its semi-circular groove is aligned with the connector and inserted into the gap between the two adjacent main panels. Then, the connector is rotated to form a clamp between the two main panels and the sub-panel. After reducing the moisture content of the other panel and applying glue to its surface and semi-circular groove, its semi-circular groove is aligned with the connector and inserted between the two main panels to fix the position of the connector and obtain the table leg.

[0007] Preferably, the sub-plate includes an upper surface, a lower surface, a side facing the other sub-plate as an inner side surface, and a side opposite to the inner side surface as an outer side surface. Reducing the moisture content of another sheet material and applying adhesive to its surface and within the semi-circular groove includes: Reduce the moisture content of another sheet and apply adhesive to its upper surface, lower surface, inner surface and semi-circular groove.

[0008] Preferably, after the moisture content of the two sub-boards is the same, the obtained table legs are pressed and fixed again using a mold.

[0009] Preferably, after being extruded and fixed into shape again, the outer surface of the table legs is leveled, polished, and then painted.

[0010] Preferably, the force-bearing structure is a groove, a through hole, or a protrusion.

[0011] Preferably, when the force-bearing structure is a protrusion, it is a hexagonal structure that protrudes outward.

[0012] Preferably, when the force-bearing structure is a groove, multiple grooves are circumferentially distributed on the outer periphery of the middle part of the connector; When the stress-bearing structure is a through hole, multiple through holes are distributed circumferentially on the middle part of the connector.

[0013] Preferably, when the connector mates with the threaded groove, the threaded groove of the connector is coated with adhesive.

[0014] Preferably, the connector is made of bamboo.

[0015] The beneficial effects of this invention are as follows: By using threaded grooves with opposite rotation directions on both sides, the two adjacent main panels can be simultaneously pulled together or pushed apart when the connector is rotated, improving the connection efficiency of the two main panels and facilitating subsequent locking. The central axis of the connector is located on the common installation line of all curved panels. The axial tension provided by the connector pulls the two main panels together, fixing them and preventing springback from creating gaps. Combined with two auxiliary panels, one is inserted beforehand, and the connector is rotated for tightening. Then, the other panel is inserted after reducing its moisture content and applying adhesive to its surface and semi-circular groove. It can absorb water naturally and spring back, forming an interference fit. The connector can also generate pre-tightening force, improving the connection stability at the bend. Applying adhesive to the semi-circular groove locks the connector, preventing vibration during subsequent use that could cause the connector to rotate and lose pre-tightening force. The central axis of the connector is located on the common installation line of all curved panels, ensuring that when the table legs expand or contract, the stress on the connector is axial, avoiding shear force and preventing damage to the connection between the connector and the main panel. The final table legs have the same surface as those heat-bent in existing technologies, with no holes left by external connections, thus achieving the integrity of the outer surface. At the same time, the table legs do not need to be formed by heating with hot steam, avoiding the damage of the glue by hot steam. The main and secondary panels can be formed using existing low-temperature hot bending processes, avoiding glue failure and extending the load-bearing capacity and service life of the table legs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an irregularly shaped curved bamboo table according to a specific embodiment of the present invention; Figure 2 A schematic diagram of the leg structure of an irregularly shaped curved bamboo table according to a specific embodiment of the present invention; Figure 3 An exploded view of the legs of an irregularly shaped curved bamboo table according to a specific embodiment of the present invention (dashed lines are installation lines); Figure 4 for Figure 3 Another angle diagram; Figure 5 A schematic diagram of the leg structure of an irregularly shaped curved bamboo table of another size according to a specific embodiment of the present invention; Figure 6 This is a diagram showing the center of curvature of the legs of an irregularly shaped curved bamboo table of another size according to a specific embodiment of the present invention (the dotted line is the installation line). Figure 7 An exploded view of the legs of an irregularly shaped curved bamboo table of another size according to a specific embodiment of the present invention (dashed lines are installation lines); Figure 8A schematic diagram of the stress-bearing structure of a connector for an irregularly shaped curved bamboo table, as described in a specific embodiment of the present invention, is a hexagonal protrusion. Figure 9 A schematic diagram showing the stress-bearing structure of a connecting member for an irregularly shaped curved bamboo table, as described in a specific embodiment of the present invention, is a through hole. Labeling Explanation: 1. Table leg; 11. Main panel; 12. Connector; 121. Load-bearing structure; 122. Threaded groove; 13. Sub-panel; 2. Threaded groove; 3. Mounting groove; 31. Semicircular groove; 0. Center of curvature; 4. Tabletop. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] Please refer to Figures 1 to 9 A uniquely shaped, curved bamboo table, comprising a tabletop 4 and multiple table legs 1; The table leg 1 includes multiple main plates 11, connectors 12, and an even number of secondary plates 13; The main plate 11 includes a first curved portion, and the width of the secondary plate 13 is half that of the main plate 11. Two secondary plates 13 are assembled and spliced ​​to form a connecting plate. The connecting plate includes a second curved portion. When the moisture content of the two secondary plates 13 is the same, their thicknesses are the same. The first and second curved portions have the same curvature and the same center of curvature 0; the line segment from the curved portion of the main plate 11 to its center of curvature 0 is the installation line; The connector 12 is columnar, and the middle part of the connector 12 has a force-bearing structure 121. Threaded grooves 122 are respectively opened on the outer side walls from the middle to both ends. The structures of the two threaded grooves 122 are mirrored with the middle part of the connector 12 as the boundary, so that the two threaded grooves 122 rotate in opposite directions. Threaded grooves 2 are respectively opened on the first curved surface of the adjacent main plate 11 facing the other main plate 11. The adjacent main plates 11 are connected by the threaded grooves 2 and the threaded grooves 122 of the connector 12. The internal threads of the threaded grooves 2 are correspondingly set with the threaded grooves 122 of the corresponding connector 12. The central axis of the two threaded grooves 2 and the central axis of the connector 12 coincide with the installation line; the second curved part is provided with an installation groove 3 for the connector 12, and the installation groove 3 is formed by splicing the semi-circular grooves 31 opened on two sub-plates 13 respectively; When connecting adjacent main panels 11, after connecting the first curved portions of two adjacent main panels 11 by rotating the connector 12, after applying glue to one of the panels 13, aligning its semi-circular groove 31 with the connector 12 and inserting it into the gap between the two adjacent main panels 11, and then rotating the connector 12 to form a clamping of the two main panels 11 onto the sub-panel 13, after reducing the moisture content of the other sub-panel 13 and applying glue to its surface and the semi-circular groove 31, aligning its semi-circular groove 31 with the connector 12 and inserting it between the two main panels 11, the position of the connector 12 is fixed to obtain the table leg 1.

[0019] As described above, the opposite-rotating threaded grooves 122 on both sides enable the rotating connector 12 to simultaneously pull or push two adjacent main plates 11 toward the center, improving the connection efficiency of the two main plates 11 and facilitating subsequent locking. The central axis of the connector 12 is located on the common installation line of all bent plates. The axial tension provided by the connector 12 pulls the two main plates 11 together to fix them and prevent springback from causing gaps. In conjunction with the two auxiliary plates 13, one plate is inserted in advance, and then the connector 12 is rotated to tighten it. Then, the other plate is inserted after reducing its moisture content and applying glue to its surface and semi-circular groove 31. It can absorb water from nature and spring back to form an interference fit. The connector 12 can also form a pre-tightening force to improve the connection stability at the bend. The connector 12 is locked by applying adhesive within the semi-circular groove 31, preventing vibration during subsequent use that could cause it to rotate and lose its preload. The central axis of the connector 12 is located on the common installation line of all the bent panels, ensuring that when the table leg 1 expands or contracts, the stress on the connector 12 is axial, avoiding shear forces that could damage the connection between the connector 12 and the main panel 11. The final formed table leg 1 has a surface consistent with that of existing hot-bent panels, without any holes left by external connections, achieving surface integrity. Furthermore, the table leg as a whole does not require hot steam heating for forming, avoiding damage to the adhesive. The main and secondary panels can be formed using existing lower-temperature hot bending processes, preventing adhesive failure and extending the load-bearing capacity and service life of the table leg.

[0020] Furthermore, the sub-plate 13 includes an upper surface, a lower surface, a side facing the other sub-plate 13 as an inner side surface, and a side facing the inner side surface as an outer side surface. Reducing the moisture content of another sheet 13 and applying adhesive to its surface and within the semi-circular groove 31 includes: Reduce the moisture content of another sheet 13 and apply adhesive to its upper surface, lower surface, inner surface and semi-circular groove 31.

[0021] As can be seen from the above description, by not applying glue to the outer side, it is convenient for the other board 13 to absorb moisture from the outer side, and the surfaces at both ends of the board 13 can also absorb moisture, thereby increasing the moisture content.

[0022] Furthermore, once the moisture content of the two sub-boards 13 is the same, the obtained table legs 1 are extruded and fixed again using a mold.

[0023] As can be seen from the above description, by using a mold to extrude and fix the shape again, deviations caused during installation are reduced, and excess glue is squeezed out to ensure the finished product effect of table leg 1.

[0024] Furthermore, after being extruded and fixed into shape again, the outer surface of the table leg 1 is leveled, polished, and then painted.

[0025] As can be seen from the above description, by leveling and polishing, the protrusions or gaps left between different boards can be eliminated, and then paint can be applied to protect the table leg 1.

[0026] Furthermore, the force-bearing structure 121 is a groove, a through hole, or a protrusion.

[0027] Furthermore, when the force-bearing structure 121 is a protrusion, it is a hexagonal structure that protrudes outward.

[0028] As can be seen from the above description, the hexagonal structure, similar to the hexagonal bolt in the prior art, can be fixed by rotating with existing wrenches without the need for custom-made proprietary tools.

[0029] Furthermore, when the force-bearing structure 121 is a convex groove, multiple grooves are circumferentially distributed on the outer periphery of the middle part of the connector 12; When the force-bearing structure 121 is a convex through hole, multiple through holes are circumferentially distributed on the middle part of the connector 12.

[0030] As can be seen from the above description, by using multiple slots or through holes, after a board 13 is inserted, the problem of installation difficulties caused by a single slot or hole not being inserted at the correct angle by an external tool can be avoided.

[0031] Furthermore, when the connector 12 mates with the threaded groove 2, the threaded groove 122 of the connector 12 is coated with adhesive.

[0032] As can be seen from the above description, applying adhesive can improve the stability of the connection.

[0033] Furthermore, the connector 12 is made of bamboo.

[0034] As can be seen from the above description, the bamboo connector 12 can meet the requirement that the bamboo table is made entirely of bamboo.

[0035] Example 1 An irregularly shaped, curved bamboo table, comprising a tabletop 4 and multiple table legs 1; The table leg 1 includes multiple main plates 11, connectors 12, and an even number of secondary plates 13; The main board 11 includes a first curved portion, and the width of the secondary board 13 is half that of the main board 11. Two secondary boards 13 are assembled and spliced ​​to form a connecting board. The connecting board includes a second curved portion. When the moisture content of the two secondary boards 13 is the same (for example, a moisture content of 12%, which is a commonly used moisture content for bamboo furniture boards, and can be adjusted according to actual conditions; when the moisture content of subsequent secondary boards 13 decreases from 12% to 10%, the volume will shrink slightly. Depending on the bamboo variety, the part of the bamboo, and the processing stage, there will be some difference. Taking bamboo boards made from the common moso bamboo in Fujian as an example, when the moisture content decreases from 12% to 10%, there is little change in the length direction, the width shrinkage rate is about 1.5%, and the thickness shrinkage rate is about 1%), the thickness is the same. The secondary board 13 includes an upper surface, a lower surface, a side facing the other secondary board 13 as the inner surface, and a side opposite to the inner surface as the outer surface. The first and second curved portions have the same curvature and the same center of curvature 0; the line segment from the curved portion of the main plate 11 to its center of curvature 0 is the installation line; The connector 12 is columnar, and the middle part of the connector 12 has a force-bearing structure 121. Threaded grooves 122 are respectively opened on the outer side walls from the middle to both ends. The structures of the two threaded grooves 122 are mirrored with the middle part of the connector 12 as the boundary, so that the two threaded grooves 122 rotate in opposite directions. Threaded grooves 2 are respectively opened on the first curved surface of the adjacent main plate 11 facing the other main plate 11. The adjacent main plates 11 are connected by the threaded grooves 2 and the threaded grooves 122 of the connector 12. The internal threads of the threaded grooves 2 are correspondingly set with the threaded grooves 122 of the corresponding connector 12. The central axis of the two threaded grooves 2 and the central axis of the connector 12 coincide with the installation line; the second curved part is provided with an installation groove 3 for the connector 12, and the installation groove 3 is formed by splicing the semi-circular grooves 31 opened on two sub-plates 13 respectively; When connecting adjacent main plates 11, glue is applied to the threaded groove 122 of the connector 12. After the first curved portions of two adjacent main plates 11 are connected by rotating the connector 12, glue is applied to one of the plates 13. Then, its semi-circular groove 31 is aligned with the connector 12 and inserted into the gap between the two adjacent main plates 11. After rotating the connector 12 to clamp the two main plates 11 onto the plate 13, the moisture content of the other plate 13 is reduced to 10%, and the moisture content is reduced on its upper surface, lower surface, inner surface, and inside the semi-circular groove 31. After applying glue (by not applying glue to the outer side, it is convenient for the other board 13 to absorb moisture from the outer side, and the surfaces at both ends of the board 13 can also absorb moisture, thus increasing the moisture content), the semi-circular groove 31 is aligned with the connector 12 and inserted between the two main boards 11 to fix the position of the connector 12 and obtain the table leg 1; after the moisture content of the two boards 13 is the same (both are 12%), the obtained table leg 1 is pressed and fixed again using a mold, and after pressing and fixing again, the outer surface of the table leg 1 is leveled, polished and then painted.

[0036] When the force-bearing structure 121 is a protrusion, it is a hexagonal structure that protrudes outward. Rotation of the force-bearing structure 121 is achieved by using a hexagonal wrench.

[0037] Example 2 An irregularly shaped curved bamboo table, similar to Embodiment 1, will not be repeated here. The difference lies in that: when the force-bearing structure 121 is a groove, multiple grooves are circumferentially distributed on the outer periphery of the middle part of the connector 12. The rotation of the force-bearing structure 121 is achieved by a correspondingly shaped pin.

[0038] Example 3 An irregularly shaped curved bamboo table, similar to Embodiment 1, will not be repeated here. The difference lies in that: when the force-bearing structure 121 is a through hole, multiple through holes are distributed circumferentially on the middle of the connector 12. Rotation of the force-bearing structure 121 is achieved by inserting a screwdriver directly into the through hole and turning the screwdriver.

[0039] Example 4 An irregularly shaped, curved bamboo table, similar to Example 1, will not be repeated here, but differs in that: The connector 12 is made of bamboo.

[0040] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An irregularly shaped, curved bamboo table, characterized in that, Includes the tabletop and multiple table legs; The table legs consist of multiple main panels, connectors, and an even number of secondary panels; The main board includes a first curved portion; the width of the secondary board is half that of the main board; two secondary boards are assembled and spliced ​​to form a connecting board; the connecting board includes a second curved portion; the two secondary boards have the same thickness when they have the same moisture content. The first and second curved portions have the same curvature and the same center of curvature; the line segment from the curved portion of the main plate to its center of curvature is the mounting line; The connector is columnar, with a load-bearing structure in the middle. Threaded grooves are respectively opened on the outer side walls from the middle to both ends. The structures of the two threaded grooves are mirrored with the middle of the connector as the boundary, so that the two threaded grooves rotate in opposite directions. Threaded grooves are respectively opened on the surface of the first curved part of the adjacent main plate facing the other main plate. The adjacent main plates are connected by the threaded grooves and the threaded grooves of the connectors. The threads in the threaded grooves are correspondingly set with the threaded grooves of the corresponding connectors. The central axis of the two threaded grooves and the central axis of the connector coincide with the installation line; the second curved part is provided with an installation groove for the connector, which is formed by splicing the semi-circular grooves opened on two sub-plates respectively; When connecting adjacent main panels, the first curved parts of two adjacent main panels are connected by rotating the connector. After applying glue to one panel, its semi-circular groove is aligned with the connector and inserted into the gap between the two adjacent main panels. Then, the connector is rotated to form a clamp between the two main panels and the sub-panel. After reducing the moisture content of the other panel and applying glue to its surface and semi-circular groove, its semi-circular groove is aligned with the connector and inserted between the two main panels to fix the position of the connector and obtain the table leg.

2. The irregularly shaped curved bamboo table according to claim 1, characterized in that, The sub-plate includes an upper surface, a lower surface, a side facing the other sub-plate as an inner side surface, and a side facing the inner side surface as an outer side surface. Reducing the moisture content of another sheet material and applying adhesive to its surface and within the semi-circular groove includes: Reduce the moisture content of another sheet and apply adhesive to its upper surface, lower surface, inner surface and semi-circular groove.

3. The irregularly shaped curved bamboo table according to claim 2, characterized in that, Once the moisture content of the two sub-boards is the same, the obtained table legs are pressed and fixed again using a mold.

4. The irregularly shaped curved bamboo table according to claim 3, characterized in that, After being extruded and shaped again, the outer surface of the table legs is smoothed, polished, and then painted.

5. The irregularly shaped curved bamboo table according to claim 1, characterized in that, The stress-bearing structure is a groove, a through hole, or a protrusion.

6. The irregularly shaped curved bamboo table according to claim 5, characterized in that, When the stress-bearing structure is a protrusion, it is a hexagonal structure that protrudes outward.

7. The irregularly shaped curved bamboo table according to claim 5, characterized in that, When the force-bearing structure is a groove, multiple grooves are circumferentially distributed on the outer periphery of the middle part of the connector. When the stress-bearing structure is a through hole, multiple through holes are distributed circumferentially on the middle part of the connector.

8. The irregularly shaped curved bamboo table according to claim 1, characterized in that, When the connector mates with the threaded groove, the threaded groove of the connector is coated with adhesive.

9. The irregularly shaped curved bamboo table according to claim 1, characterized in that, The connector is made of bamboo.

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