Electric table, leg frame and light support structure

Abstract

Support structure (1) comprising: a first frame (10) comprising a top plate (11), a pair of inner side plates (12) which are bent downwards and extend from two sides of the top plate (11), a pair of outer side plates (13) which are bent upwards and extend from the inner side plates (12), respectively, and a pair of fixing plates (14) which are bent and extend from the outer side plates (13), each outer side plate (13) being arranged outside the respective inner side plate (12), and a groove (15) being arranged between each inner side plate (12) and the respective outer side plate (13); and a second frame (20) connected to the first frame (10) and comprising a cover plate (21) and a pair of intermediate plates (22) which are bent downwards and extend from two sides of the cover plate (21), each intermediate plate (22) being received in a respective groove (15) and the cover plate (21) being arranged above the upper plate (11); wherein the upper plate (11) comprises at least one step (113) arranged at an end thereof remote from the cover plate (21), wherein the step (113) and each fastening plate (14) each comprise an upper surface (1131, 141), and the upper surfaces (1131, 141) are located substantially in the same plane.

Description

BACKGROUNDTechnical field

[0001] The disclosure relates to an electric table, in particular to an electric table, a leg frame and a lightweight support structure therefor. State of the art

[0002] Due to the different body types, heights, and habits of users, fixed-type desks have become obsolete. Electric height-adjustable desks have become the mainstream and trend in modern designs. By adjusting the height, the desks can accommodate users of different heights and body types for greater comfort.

[0003] A prior art leg frame for an electric table includes a support structure, a pair of telescopic supports, and a pair of side wings. The support structure consists of two square tubes connected at an interval and a receiving recess formed between the two square tubes.

[0004] Such and similar leg frames and support structures are described in documents DE 20 2021 104 143 U1, US 2020 / 0 260 862 A1, US 2021 / 0 100 355 A1, and WO 2015 / 180 724 A1. However, in order to ensure that the leg frame has considerable strength, joining the square tubes to form the support structure not only requires complicated processes but also causes the finished leg frame to be heavy, which is disadvantageous during movement and transportation. Furthermore, such a heavy weight makes it impossible to effectively reduce material costs, thus affecting economic profit. SUMMARY

[0005] It is an object of the disclosure to provide an electric table, a leg frame, and a lightweight support structure therefor that utilize the shapes of the frames to maintain stability, reduce weight, and lower material costs.

[0006] The problem is solved by the features of independent claim 1. Advantageous embodiments are specified in the subclaims.

[0007] To achieve the above object, the disclosure provides an electric table including a leg frame, a table top, and a plurality of screw members. The leg frame includes a lightweight support structure, a pair of telescopic supports, and a pair of side wings. The lightweight support structure includes a first frame and a second frame. The first frame includes a top plate, a pair of inner side plates separately bent downward and extending from two sides of the top plate, an outer side plate bent upward and extending from each inner side plate, and a fixing plate bent and extending from each outer side plate. Each outer side plate is formed outside each inner side plate. A groove is formed between each inner side plate and each outer side plate.The second frame is connected to the first frame and includes a top plate and a pair of intermediate plates, which are separately bent downward and extend from two sides of the top plate. Each intermediate plate is received in each groove. The top plate is formed over the top plate. The telescopic supports are separately connected to two ends of the lightweight support structure. Each telescopic support contains an electric motor. Each side wing is separately arranged on one side of each telescopic support. The table top has a bottom surface. Each screw element passes through the first frame and the second frame to fasten each fixing plate and the top plate to the bottom surface.

[0008] To achieve the above object, the disclosure provides a leg frame of an electric table including a lightweight support structure, a pair of telescopic supports, and a pair of side wings. The lightweight support structure includes a first frame and a second frame. The first frame includes a top plate, a pair of inner side plates separately bent downward and extending from two sides of the top plate, an outer side plate bent upward and extending from each inner side plate, and a fixing plate bent and extending from each outer side plate. Each outer side plate is formed outside each inner side plate. A groove is formed between each inner side plate and each outer side plate.The second frame is connected to the first frame and includes a top plate and a pair of intermediate plates, which are separately bent downward and extend from two sides of the top plate. The intermediate plates are separately accommodated in each groove. The top plate is formed over the top plate. Each telescopic support is separately connected to two ends of the lightweight support structure. Each telescopic support contains an electric motor. Each side wing is arranged separately on one side of each telescopic support.

[0009] To achieve the above object, the disclosure provides a lightweight support structure including a first frame and a second frame. The first frame includes a top plate, a pair of inner side plates separately bent downward and extending from two sides of the top plate, an outer side plate upward and extending from each inner side plate, and a fixing plate bent and extending from each outer side plate. Each outer side plate is formed outside each inner side plate. A groove is formed between each inner side plate and each outer side plate. The second frame is connected to the first frame and includes a top plate and a pair of intermediate plates separately bent downward and extending from two sides of the top plate. The intermediate plates are separately received in each groove. The top plate is formed over the top plate.

[0010] The disclosure further has the following features: The coplanarity of each fixing plate, cover plate, boss, and cross plate of each side wing, and the rigidity of the tabletop, effectively reduce the weight of the support structure. By slidably connecting each intermediate plate to each groove, it can be widely used for tabletops of different lengths and specifications. By pivotally connecting each telescopic support to the support structure, time and labor costs at an installation site can be saved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of the leg frame of the disclosure associated with a table top; Fig. 2 is an exploded view of the lightweight support structure of the disclosure; Fig. 3 is an assembled view of the lightweight support structure of the disclosure; Fig. 4 is a cross-sectional view and a partially enlarged view of the lightweight support structure of the disclosure; Fig. 5 is another cross-sectional view of the lightweight support structure of the disclosure taken along another direction; Fig. 6 is an exploded view of the structure of the lightweight support structure and controller of the disclosure; Fig. 7 is a cross-sectional view of the lightweight support structure and controller of the disclosure prior to assembly; Fig. 8 is a cross-sectional view of the lightweight support structure and controller of the disclosure after assembly; Fig. 9 is a schematic representation of the pre-combination of the lightweight support structure and the telescopic supports of the disclosure prior to assembly; Fig. 10 is an exploded view of the leg frame of an electric table of the disclosure; Fig. 11 is a schematic view of the leg frame of an electric table of the disclosure associated with an elongated table top; Fig. 12 is a cross-sectional view of the electric table of the disclosure; and Fig. 13 is a cross-sectional view of the electric table of the disclosure taken along another direction. DETAILED DESCRIPTION

[0011] See the Fig. 1, Fig. 9 and Fig. 10. The disclosure provides a leg frame of an electric table for supporting a tabletop 8. The leg frame includes a lightweight support structure 1, a pair of telescopic supports 3, and a pair of side wings 5. The telescopic supports 3 are each pivotally connected to two ends of the lightweight support structure 1. The side wings 5 ​​are arranged separately on one side of each telescopic support 3 and connected to two ends of the lightweight support structure 3.

[0012] See the Fig. 2-5. The disclosure further provides a lightweight support structure 1 including a first frame 10 and a second frame 20.

[0013] The first frame 10 is manufactured through the processes of punching, cutting, and bending a metal plate. The first frame 10 includes a top plate 11, a pair of inner side plates 12, a pair of outer side plates 13, and a pair of fixing plates 14. The inner side plates 12 are separately bent downward and extend from a front and a back of the top plate 11. Each outer side plate 13 is bent upward and extends from each inner side plate 12. Each outer side plate 13 is parallel to each inner side plate 12. Each fixing plate 14 is bent and extends from each outer side plate 13 to be fixed to the table top 8.

[0014] Each outer side plate 13 is formed outside each inner side plate 12. A groove 15 is formed between each inner side plate 12 and each outer side plate 13. Each mounting plate 14 has a top surface 141. The top plate 11 also has a top surface 111. The top surfaces of the mounting plates 14 are in the same plane and at a plane higher than the top surface 111 of the top plate 11.

[0015] In one embodiment, a left portion of the upper plate 11 is formed with an alignment hole 112, while a right portion of the upper plate 11 is provided with two steps 113. Each step 113 has a top surface 1131. The top surface 1131 of each step 113 and the top surface 141 of each mounting plate 14 are substantially in the same plane. Additionally, the outer step 113 is formed with two locking holes 1132.

[0016] In one embodiment, a plurality of plug holes 16 are formed on each inner side plate 12 and each outer side plate 13, each corresponding to each other. Each plug hole 16 penetrates each inner side plate 12 and each outer side plate 13. The right-hand portions of each inner side plate 12 and each outer side plate 13 are separately provided with a pivot portion 17 and a positioning portion 18. See Fig. 6. The pivot portion 17 of one embodiment includes a projection 171 formed on an inner surface of the inner side plate 12 and a pivot hole 172 penetrating the projection 171 and the outer side plate 13. The positioning portion 18 of the embodiment is a positioning hole penetrating the inner side plate 12 and the outer side plate 13. In addition, each fixing plate 14 is formed with a plurality of locking holes 142 at intervals.

[0017] The second frame 20 is also manufactured through the processes of punching, cutting, and bending a metal plate. The second frame 20 is connected to the first frame 10 and includes a cover plate 21 and a pair of intermediate plates 22. The intermediate plates 22 are separately bent downward and extend from a front and a back of the cover plate 21. Each intermediate plate 22 is perpendicular to the cover plate 21. Each intermediate plate 22 is received in each groove 15. The cover plate 21 is formed above the upper plate 11.

[0018] In one embodiment, each intermediate plate 22 is slidably connected to each groove 15 and is located between each inner side plate 12 and each outer side plate 13. The cover plate 21 has a top surface 211. The top surface 141 of each mounting plate 14, the top surface 1131 of each step 113, and the top surface 211 of the cover plate 21 are substantially in the same plane.

[0019] It is stated that the phrase “the top surface 141 of each fixing plate 14, the top surface 1131 of each step 113 and the top surface 211 of the cover plate 21 are substantially in the same plane” means that the top surface 141 of each fixing plate 14, the top surface 1131 of each step 113 and the top surface 211 of the cover plate 21 are jointly fixed to the table top 8.

[0020] In one embodiment, the cover plate 21 is formed with a plurality of locking holes 212. Each locking hole 212 is arranged at regular intervals. The alignment hole 112 is selectively aligned with one of the locking holes 212, using a screw element 9 so that it passes through the alignment hole 112 and the locking hole 212 for fastening, as shown in Fig. 13. A left portion of the cover plate 21 is provided with two recessed portions 213. Each recessed portion 213 has a bottom surface 2131. The upper plate 11 has a bottom surface 114. The bottom surface 2131 of each recessed portion 213 and the bottom surface 114 of the upper plate 11 are substantially in the same plane.

[0021] In one embodiment, one end of each intermediate plate 22, located away from the cover plate 21, extends with a folded-back plate 23 between the intermediate plate 22 and the inner side plate 12. Each intermediate plate 22 is formed with a plurality of plug holes 221. A bolt 24 can pass through the plug hole 221 of each intermediate plate 22 and the plug hole 16 for fastening when they are aligned.

[0022] See Fig. 6. The left portion of each intermediate plate 22 is provided with a pivot portion 222 and a positioning portion 223. The pivot portion 222 of the embodiment includes a projection 2221 formed on an inner surface of the intermediate plate 22 and a pin hole 2222 penetrating the projection 2221. The positioning portion 223 of the embodiment also includes a projection 2231 formed on an inner surface of the intermediate plate 22 and a positioning hole 2232 penetrating the projection 2231.

[0023] See the Fig. 6-8. The leg frame of the disclosure further includes a controller 4. The controller 4 is an approximately rectangular body, at both ends of which an insertion plate 41 and an elastic fastening element 42 are separately arranged. A central region of the upper plate 11 is separately formed with two slots 115. The insertion plate 41 of the controller 4 is inserted into one of the slots 115, respectively, and the elastic fastening element 42 of the controller 4 is then embedded in another slot 115 through its elastic deformation, thus achieving quick assembly and removal.

[0024] Additionally, the above-mentioned details of the controller 4 are used for explanation and description purposes only, and are not intended to limit the scope of the claims of the disclosure. In other words, it can be adapted and modified depending on actual usage requirements.

[0025] See Fig. 9. Each telescopic support 3 is connected to two ends of the lightweight support structure 1. Each telescopic support 3 includes an electric motor 31, a plurality of tubes 32, and a gear (not shown). The tubes 32 are connected to each other. One of the tubes 32 is connected to the bottom of the electric motor 31 to cause each tube 32 to generate reciprocal movement through the cooperation of the electric motor 31 and the gear. Two sides of the electric motor 31 are separately formed with two threaded holes 311. Each electric motor 31 is housed between two of the inner side plates 12 and between two of the intermediate plates 22. One of the electric motors 31 abuts a surface of each projection 171 and is fixed by inserting a pin 33 into the pin hole 172 to screw the pin 33 to one of the threaded holes 311, as shown in Fig. 6. Another electric motor 31 abuts against a surface of each projection 2221 and is secured by inserting another pin 33 into the pin hole 2222 to screw the other pin 33 to the threaded hole 311, as shown in Fig. 6. As a result, each telescopic support 3 can be pre-assembled to the lightweight support structure 1 to save time and labor costs at an installation site.

[0026] See Fig. 10. When assembling, first each telescopic support 3 is rotated upwards around the pin 33, a fastening element 34 is inserted into the (in Fig. 6) positioning section 18 and the rest of the threaded holes 311 for fastening and another fastening element 34 is inserted into the (in Fig. 6) and the rest of the threaded holes 311 for fastening. Then, the side wings 5 ​​are separately arranged on one side of each telescopic support 3 and connected to two ends of the lightweight support structure 1. Each side wing 5 includes an edge plate 51 and a curved cross plate 52 extending from the edge plate 51. The inner side of the edge plate 51 is connected to a connecting plate 53. The connecting plates 53 are respectively inserted into the ends of the first frame 10 and the second frame 20. The edge plates 51 accordingly cover one lateral side of the electric motor 31 and the ends of the first frame 10 and the second frame 20. Each cross plate 52 is formed with a plurality of locking holes 521 at intervals.

[0027] Additionally, the leg frame of the disclosure includes a pair of support legs 6. Each support leg 6 is connected to one end of each tube 32 located away from the electric motor 31 to improve the stability of the leg frame.

[0028] See Fig. 11. Apart from the above embodiment, the leg frame of the disclosure may also be implemented by another embodiment. In this embodiment, each intermediate plate 22 is slidably connected to each groove 15, the alignment hole 112 is selectively aligned with one of the locking holes 212, and a screw member 9 is used to pass through an elongated table top 8A for fastening, as shown in Fig. 13. In other words, the leg frame of the disclosure can be applied to table tops 8, 8A with different lengths, ranging between about 1000 mm and about 1600 mm. See the Fig. 12 and Fig.13. The disclosure further provides an electric table including an electric table leg frame, a table top 8, and a plurality of bolt members 9. The table top 8 has a bottom surface 81. Each bolt member 9 passes separately through the locking holes 142, 1132, 212 of the first frame 10 and the second frame 20 to secure each mounting plate 14 and the cover plate 21 to the bottom surface 81. Furthermore, when the leg frame of the disclosure is used on a table top 8 with a general length, the stability of the overall structure can be further increased by embedding each bolt 24 into each socket hole 16, 221. List of reference symbols 1 lightweight support structure 3 telescopic support 4 controllers 5 pair of side wings 6 pairs of support feet 8 Table top 8 elongated table top 9 screw element 10 first frame 11 upper plate 12 inner side plate 13 outer side plate 14 Mounting plate 15 grooves 16 plug holes 17 Swivel section 18 Positioning section 20 second frame 21 Cover plate 22 Intermediate plate 23 folded back plate 24 bolts 31 electric motor 32 pipes 33 cones 34 Fastening element 41 Insert plate 42 elastic fastening element 51 edge plate 52 curved cross plate 53 Connecting plate 81 subpage 111 Top 112 Alignment hole 113 Level 114 subpage 115 slot 141 Top 142 locking holes 171 lead 172 Mortise 211 Top 212 locking holes 213 Advanced Section 221 plug holes 222 swivel section 223 Positioning section 311 threaded holes 521 locking holes 1131 top 1132 locking holes 2131 bottom 2221 lead 2222 Mortise 2231 lead 2232 positioning hole

Claims

[1] Support structure (1) comprising: a first frame (10) comprising a top plate (11), a pair of inner side plates (12) which are bent downwards and extend from two sides of the top plate (11), a pair of outer side plates (13) which are bent upwards and extend from the inner side plates (12), respectively, and a pair of fixing plates (14) which are bent and extend from the outer side plates (13), each outer side plate (13) being arranged outside the respective inner side plate (12), and a groove (15) being arranged between each inner side plate (12) and the respective outer side plate (13); and a second frame (20) connected to the first frame (10) and comprising a cover plate (21) and a pair of intermediate plates (22) which are bent downwards and extend from two sides of the cover plate (21), each intermediate plate (22) being received in a respective groove (15) and the cover plate (21) being arranged above the upper plate (11); wherein the upper plate (11) comprises at least one step (113) arranged at an end thereof remote from the cover plate (21), wherein the step (113) and each fastening plate (14) each comprise an upper surface (1131, 141), and the upper surfaces (1131, 141) are located substantially in the same plane. [2] Support structure (1) according to claim 1, wherein each intermediate plate (22) is slidably connected to the groove (15). [3] Support structure (1) according to claim 1, wherein each of the fastening plate (14), the top plate (11) and the cover plate (21) separately comprise a plurality of locking holes (142, 1132, 212). [4] Support structure (1) according to claim 1, wherein each fastening plate (14) and the cover plate (21) each comprise an upper side (141, 211) and the upper sides (141, 211) are located substantially in the same plane. [5] Support structure (1) according to claim 1, wherein each fastening plate (14) and the upper plate (11) each comprise a top surface (141, 111) and the top surfaces (141) of the fastening plates (14) are located substantially in the same plane and at a plane higher than that of the top surface (111) of the upper plate (11). [6] Support structure (1) according to claim 1, wherein the cover plate (21) comprises at least one recessed portion (213), the recessed portion (213) and the upper plate (11) each comprise a bottom side (2131, 114), and the bottom sides (2131) of the recessed portion (213) and the bottom sides (114) of the upper plate (11) are located substantially in the same plane. [7] The support structure (1) according to claim 1, further comprising: a screw member (9), wherein the top plate (11) comprises at least one alignment hole (112), the cover plate (21) comprises a plurality of locking holes (212), the alignment hole (112) is selectively aligned with one of the locking holes (212) so as to be positioned by the screw member (9) passing through the alignment hole (112) and the locking hole (212). [8] The support structure (1) according to claim 1, further comprising: a plurality of bolts (24), wherein a plurality of plug holes (16) are arranged in each inner side plate (12) and each outer side plate (13) corresponding to each other, and each bolt (24) passes through each plug hole (16). [9] A support structure (1) according to claim 1, wherein each intermediate plate (22) comprises a folded-back plate (23) extending from one end thereof away from the cover plate (21), and the folded-back plate (23) is located between the intermediate plate (22) and the inner side plate (12). [10] Leg frame of an electric table, the leg frame comprising: a support structure (1) according to any one of claims 1-9; a pair of telescopic supports (3) separately connected to two ends of the support structure (1), each telescopic support (3) comprising an electric motor (31); and a pair of side wings (5), each side wing (5) being arranged on one side of each telescopic support (3). [11] Leg frame according to claim 10, wherein each telescopic support (3) is pivotally connected to the support structure (1). [12] The leg frame according to claim 10, further comprising: a controller (4), wherein the controller (4) comprises an insertion plate (41) and an elastic fastening member (42) arranged at two ends thereof, the upper plate (11) comprises two slots (115), the insertion plate (41) is inserted into one of the slots (115) respectively, and the elastic fastening member (42) is embedded into another of the slots (115) respectively. [13] A leg frame according to claim 10, further comprising: a pivot (33), wherein each inner side plate (12) and each outer side plate (13) separately comprise a pivot portion (17), each pivot portion (17) comprises a projection (171) arranged on the inner side plate (12) and a pivot hole (172) penetrating the projection (171) and the outer side plate (13), and the electric motors (31) are arranged between the projections (171) and are fixed by the pivot (33) inserted into the pivot hole (172). [14] A leg frame according to claim 10, further comprising: a pin (33), wherein each intermediate plate (22) comprises a pivot portion (222), each pivot portion (222) comprises a projection (2221) arranged on the intermediate plate (22) and a pin hole (2222) penetrating the projection (2221), and the electric motors (31) are arranged between the projections (2221) and are fixed by the pin (33) inserted into the pin hole (2222). [15] Electric table comprising: a leg frame of an electric table according to any one of claims 10-14; a table top (8, 8A) comprising a bottom surface (81); and several screw elements (9); wherein each screw element (9) passes through the first frame (10) and the second frame (20) to fix each fixing plate (14) and the cover plate (21) to the bottom side (81).

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