Foldable table

Abstract

The utility model discloses a foldable table, aims at solving the technical problem that the portability and structural stability of the existing foldable table are difficult to take into account. The foldable table comprises a foldable table frame, the table frame comprises: a crossbeam that can be converted between an unfolded configuration and a folded configuration; a stand column rotatably connected with the crossbeam; a first folding mechanism for locking the stand column; and a second folding mechanism for locking the crossbeam in the unfolded configuration. The utility model locks multiple parts of the crossbeam as a rigid whole under the unfolded configuration, and releases the lock under the folded configuration to enable the angle to be changed, so that the table has high rigidity and stability comparable to non-foldable tables when unfolded and used, while ensuring that the structure is compact after folding, facilitating storage and transportation.

Description

Technical Field

[0001] This utility model relates to the field of table frame technology, and in particular to a foldable table. Background Technology

[0002] Existing tables, especially height-adjustable tables that need to support heavy equipment or require high stability, typically use a one-piece rigid frame to ensure structural strength. However, these frames are bulky, causing significant inconvenience in transportation, handling, and storage.

[0003] To address this issue, some foldable tables have emerged on the market. However, these existing folding solutions often suffer from the following drawbacks: First, in order to achieve the folding function, their structural strength and stability are often compromised, making them prone to wobbling when unfolded and failing to achieve the same mechanical performance as non-folding tables. Second, the locking mechanisms of many folding tables are quite complex, requiring the use of tools such as wrenches for assistance during unfolding and locking, making the installation process inconvenient and inefficient.

[0004] Therefore, how to design a table that can be compactly folded for easy transportation, has high strength and stability when unfolded, and simplifies the operation process is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to solve the problem of balancing portability and structural stability in existing folding tables. Specifically, this invention aims to provide a foldable table that is compact when folded, facilitating transportation and storage, while possessing high rigidity and stability comparable to non-folding tables when unfolded.

[0006] The foldable table provided by this utility model includes a foldable table frame, wherein the foldable table frame comprises: A crossbeam is configured to switch between an unfolded configuration for supporting a workbench and a folded configuration, wherein in the unfolded configuration, at least two portions of the crossbeam are locked to form a rigid whole; and in the folded configuration, the locking between at least two portions of the crossbeam is released, and the at least two portions are in a retracted state by a relative angle change. The column is rotatably connected to the crossbeam so that the column can be unfolded or folded relative to the crossbeam. A first folding mechanism is disposed at the connection between the column and the crossbeam. The first folding mechanism includes a first locking component, which is used to lock or unlock the column in the unfolded position relative to the crossbeam. A second folding mechanism is disposed on the crossbeam. The second folding mechanism includes a second locking component, which is used to lock or unlock the crossbeam when it is in the unfolded configuration.

[0007] Preferably, the first locking assembly includes a handle, a locking pin linked to the handle, and a resilient reset member; The resilient reset element is configured to apply a force to the handle so that the locking pin tends to a locked position; The handle is configured to overcome the force of the elastic reset member when pressed, and to move the locking pin to the unlock position; The locking position is the position where the locking pin restricts the rotation of the column, and the unlocking position is the position where the locking pin allows the column to rotate.

[0008] Preferably, the first folding mechanism further includes at least one rotating component that is fixedly connected to the column and rotatably connected to the crossbeam, and the rotating component is provided with a notch for engaging with the locking pin; The locking position is the position where the locking pin engages with the notch, and the unlocking position is the position where the locking pin disengages from the notch.

[0009] Preferably, the second locking component is a clamping clamp configured to lock the crossbeam in the unfolded configuration when rotated to the locking position, and to unlock the crossbeam when disengaged from the locking position.

[0010] Preferably, at least two parts of the crossbeam are two spaced sub-crossbeams, each of which is provided with the clamping clamp. The second folding mechanism also includes a crossbeam connecting rod for connecting the two sub-crossbeams. The clamping fixture is configured to press against and secure the crossbeam connecting rods to their respective sub-crossbeams to lock the crossbeams in the unfolded configuration.

[0011] Preferably, both sub-beams have internal cavities that can accommodate the beam connecting rod, which is configured to slide between two positions: A locking position in which the crossbeam connecting rod simultaneously extends into the internal cavities of both sub-crossbeams and is locked by the clamping fixture; and An unlocked position in which the beam connecting rod disengages from the internal cavity of one of the sub-beams to allow the two sub-beams to retract into each other.

[0012] Preferably, the uprights are two in number, and the foldable table frame further includes: A motor mounted on one of the columns; and A transmission rod connects the motor to another column; The motor is configured to drive the column it is located to rise and fall, and to drive the other column to rise and fall synchronously via the transmission rod; The transmission rod is constructed as a foldable structure to accommodate the unfolding or folding of the column relative to the crossbeam, and the conversion of the crossbeam between the unfolded configuration and the folded configuration.

[0013] Preferably, the transmission rod includes: One telescopic pole; A fixed rod connected to the telescopic rod; and Four rotation and folding points are set on the transmission rod; The telescopic rod is used to adjust the overall length of the transmission rod during the folding process; Among them, two of the rotation and folding points are used to accommodate the unfolding or folding of the two columns relative to the crossbeam, and the other two rotation and folding points are used to accommodate the transformation of the crossbeam between the unfolded configuration and the folded configuration; Furthermore, the transmission rod is configured to adjust the rotation axis of the folding point by its own rotation, so that it is aligned to a preset folding position when folding is required.

[0014] Preferably, the table frame is also provided with handles for carrying.

[0015] Preferably, the foldable table also includes two tabletops mounted on the crossbeam. The two tabletops are configured such that when the crossbeam is in the unfolded configuration, the two tabletops are adjacent to each other to form the work surface; when the crossbeam is in the folded configuration, the two tabletops overlap each other, and the working surfaces of the two tabletops are opposite each other.

[0016] Compared with the prior art, this utility model achieves the following beneficial effects through its unique structural design: 1. Through reliable first and second folding mechanisms, the table frame is ensured to be firmly locked in its unfolded configuration, with all parts of the crossbeams and columns forming a rigid whole. Its mechanical properties and structural strength are comparable to traditional non-folding table frames. This effectively overcomes the defects of existing folding furniture, such as low structural strength and easy wobbling during use.

[0017] 2. The double folding design of the beams and columns significantly reduces the size of the table after folding, making it compact and greatly facilitating the transportation, handling, and storage of the product, thus reducing related costs.

[0018] 3. The overall folding design of this utility model, especially the design of the crossbeam that can switch between a rigid whole and a folded state, cleverly solves the contradiction between the portability of the table frame and the high strength requirements during use, providing users with a better user experience. Attached Figure Description

[0019] Figure 1 This is a perspective view of a table frame in its unfolded configuration according to an embodiment of the present invention.

[0020] Figure 2 yes Figure 1 The table frame shown is in a 3D configuration for storage.

[0021] Figure 3 This is a schematic diagram of the first folding mechanism when the column is in the unfolded state relative to the crossbeam.

[0022] Figure 4 This is a schematic diagram of the first folding mechanism when the column is in a retracted state relative to the crossbeam.

[0023] Figure 5 This is a 3D view of the first locking component.

[0024] Figure 6 This is a schematic diagram of the structure of a locking component according to an embodiment of the present invention.

[0025] Figure 7 yes Figure 6 A sectional view.

[0026] Figure 8 This is a schematic diagram of the locking assembly according to another embodiment of the present invention.

[0027] Figure 9 This is a structural schematic diagram of a locking component according to another embodiment of the present invention.

[0028] Figure 10 yes Figure 9 A three-dimensional structural diagram of the locking assembly.

[0029] Figure 11 This is a structural diagram of the crossbeam.

[0030] Explanation of reference numerals in the attached drawings: 10, crossbeam; 11, sub-crossbeam; 111, slide groove; 12, crossbeam connecting rod; 20. Columns; 30. First locking assembly; 31. Handle; 311. Connecting plate; 3111. Long slot; 32. Locking pin; 33. Rotating component; 331. Notch; 332. Positioning groove; 333. Positioning block; 34. Central shaft; 40. Second locking assembly; 41. Cam; 42. Wrench; 43. Protrusion; 44. Rotary shaft; 45. Nut; 46. Mounting base; 47. Mounting shaft; 48. Press handle; 481. Connecting part; 49. Slider; 491. Pressing end; 492. Guide groove; 50. Transmission rod; 51. Telescopic rod; 52. Fixed rod; 53. Rotation and folding points; 60. Handle; 70. Electric motor; 80. Tabletop; 81. Support component; 811. First groove; 812. Second groove; 90. Table legs; 100. Mounting rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] The present invention aims to provide a foldable table that is compact in structure when folded, making it easy to transport and store, while having high rigidity and stability comparable to a non-foldable table when unfolded.

[0033] Please see Figure 1 and Figure 2 This embodiment provides the overall structure of a foldable table. The table mainly includes a foldable table frame and a tabletop 80 mounted on it. The table frame mainly includes a crossbeam 10, two uprights 20, and table legs 90 mounted on the bottom of the uprights 20. The table legs 90 are pre-installed and fixed to the uprights 20, so users do not need to use screws or other tools to install them after unpacking, further improving the convenience of installation.

[0034] Figure 1 The table is shown in its fully extended working configuration. In this state, the two uprights 20 are perpendicular to the ground, and the two sections of the crossbeam 10 are locked together to form a rigid whole, fully extended horizontally. The two tabletops 80 mounted on the table frame are adjacent to each other, forming a complete and continuous work surface. The entire structure is stable and can be used as a height-adjustable table.

[0035] Figure 2The table is shown in its fully folded configuration. In this state, the uprights 20 are folded inwards to be parallel to the crossbeam 10; simultaneously, the locking between the two parts of the crossbeam 10 is released, and they are brought together by a change in their relative angles. Correspondingly, the two tabletops 80 are also folded and overlap each other, significantly reducing the overall volume of the table for easier storage or transportation.

[0036] The table frame's conversion from an unfolded to a folding configuration is primarily achieved through two core mechanisms: a first folding mechanism located at the connection between the upright 20 and the crossbeam 10, and a second folding mechanism located on the crossbeam 10. A key feature of this invention is that all locking and unlocking operations of these two mechanisms are designed to be performed manually without any tools, greatly simplifying the user's operation.

[0037] The first folding mechanism is used to control and lock the rotation of the column 20 relative to the beam 10. Please refer to the following: Figure 3 , Figure 4 and Figure 5 Its detailed structure is as follows: At each connection between the upright 20 and the crossbeam 10, a portion of the crossbeam 10 consists of a sub-crossbeam 11 and a mounting rod 100 arranged parallel to it, together forming a stable mounting base. Each first folding mechanism includes two rotating members 33, which are fixedly connected to two opposite side walls of the upright 20. Simultaneously, these two rotating members 33 are rotatably connected to the sub-crossbeam 11 and the mounting rod 100 via pivots. This design, by distributing the rotational load of the upright 20 to two spaced-apart support points, forms a broad support base, greatly enhancing the resistance to torsion and lateral bending at the connection. For further reinforcement, when the upright 20 is in the unfolded state relative to the crossbeam 10, the positioning grooves 332 on the two rotating members 33 are respectively positioned and engaged within the positioning blocks 333 on the sub-crossbeam 11 and the mounting rod 100, so that the two rotating members 33 are respectively supported upward by the two positioning blocks 333. This double locking and support mechanism ensures the rigidity and stability of the upright 20 in the unfolded state.

[0038] The first locking component 30 is the core component for enabling manual locking and unlocking. For example... Figure 5 As shown, it includes a handle 31, a locking pin 32, a central shaft 34, and a resilient return element (e.g., a spring) not shown. The two ends of the central shaft 34 are rotatably connected to the sub-beam 11 and the mounting rod 100, respectively, spanning between them. The handle 31 has two parallel connecting plates 311, which are rotatably connected to the central shaft 34, allowing the handle 31 to rotate about the central shaft 34.

[0039] The locking pin 32 is constrained within the sliding grooves 111 respectively opened on the sub-beam 11 and the mounting rod 100, and can only perform linear reciprocating motion. Each connecting plate 311 of the handle 31 has an elongated slot 3111, which is fitted onto the locking pin 32. The working principle of this linkage structure is as follows: 1. Locked state ( Figure 3 In the default state, the elastic reset member applies force to the handle 31, keeping it in a stationary position. In this position, the locking pin 32 is pushed to its locked position through the linkage between the connecting plate 311 and the elongated slot 3111. Simultaneously, the rotating member 33 has a notch 331 that matches the locking pin 32. When the column 20 is in the extended vertical position, the notch 331 is precisely aligned with the movement path of the locking pin 32. Therefore, in the locked position, the locking pin 32 is inserted into the notch 331, forming a secure mechanical interlock, thereby preventing any rotation of the rotating member 33 and the column 20 fixed thereto.

[0040] 2. Unlocking and folding process ( Figure 4 When the user needs to fold the column 20, no tools are required; simply press the handle 31 by hand. The connecting plate 311 of the handle 31 rotates around the central axis 34, overcoming the elastic force of the resilient reset member. This rotation drives the locking pin 32 to slide linearly along the slide groove 111 via the connecting plate 311, completely disengaging from the recess 331 and reaching the unlocked position. At this point, the rotational constraint on the column 20 is released, and the user can smoothly fold the column 20 inward to a position parallel to the crossbeam 10. After releasing the handle 31, the resilient reset member will drive the locking pin 32 to reset.

[0041] The second folding mechanism is used to lock and unlock the folding of the crossbeam 10 itself. For example... Figure 11 As shown, the crossbeam 10 consists of two sub-crossbeams 11. To rigidly connect these two sub-crossbeams 11 into a single, complete crossbeam 10 in the unfolded configuration, the mechanism employs a crossbeam connecting rod 12 that slides within the internal cavity of each sub-crossbeam 11. During the unfolded locking phase, the crossbeam connecting rod 12 simultaneously extends into the interior of the two adjacent sub-crossbeams 11, acting like an internal pin to connect them. To securely fix the crossbeam connecting rod 12 in the locked position, a second locking assembly 40 is provided. This assembly is essentially a clamping clamp, and all embodiments of it adhere to the core design principle of manual operation without tools.

[0042] A. First embodiment: Cam-pressing locking assembly Please see Figure 6 and Figure 7The second locking assembly 40 in this embodiment mainly consists of a wrench 42, a cam 41, and a rotating shaft 44. Without tools, the user simply rotates the wrench 42 to the locked position by hand. The eccentric profile of the cam 41 causes its larger radius portion to gradually press against the surface of the crossbeam connecting rod 12, generating a large clamping force. This frictional force firmly fixes the crossbeam connecting rod 12 in place. To ensure the reliability of the locked state, a protrusion 43 is also provided on the outer wall of the sub-crossbeam 11. When the wrench 42 rotates to the locked position, it abuts against the protrusion 43, forming a positioning point for the wrench 42 to provide feedback that the wrench 42 has been rotated into place.

[0043] B. Second embodiment: Nut-pressing locking assembly Please see Figure 8 This is a simpler embodiment. It achieves locking via a nut 45 (or a wing screw with a handle). During operation, the user directly tightens the nut 45 by hand. As the nut 45 is screwed inward, its end presses directly against the surface of the crossbeam connecting rod 12, firmly pressing it against the inner wall of the other side of the sub-crossbeam 11, thus achieving frictional locking through point contact pressure. Unlocking is achieved by loosening the nut 45 in the opposite direction. To make the locking more secure, two nuts 45 are typically used.

[0044] C. Third embodiment: Eccentric press-type locking assembly Please see Figure 9 and Figure 10 This embodiment features a more compact structure, offering greater mechanical advantages. Its components include a mounting base 46 fixed to the sub-beam 11, a mounting shaft 47 fixed to the mounting base 46, a pressing handle 48 rotatable about the mounting shaft 47, and a slider 49 slidable on the mounting base 46. During operation, when the user presses down on the handle 48 to rotate it, the eccentric surface of its connecting part 481 acts on the slider 49, like a cam, forcefully pushing the slider 49 downwards. The bottom pressing end 491 then acts vertically against the beam connecting rod 12 with immense pressure, achieving a very secure lock. This design converts the user's pressing torque into a powerful linear positive pressure, resulting in excellent locking performance and effortless operation.

[0045] This utility model discloses a foldable table that integrates an electric lifting function. The system includes a motor 70 mounted on one of the columns 20, and a transmission rod 50 for connecting the two columns 20. The motor 70 drives the column 20 it is mounted on to rise and fall, and transmits the power to the other column 20 through the transmission rod 50, thereby achieving synchronous rising and falling of the two columns.

[0046] To accommodate the complex folding motion of the table frame, the transmission rod 50 is designed as a special foldable structure. It comprises an adjustable-length telescopic rod 51 and a fixed rod 52. The key feature is the inclusion of four rotating folding points 53. Two points accommodate the folding motion of the two uprights 20 relative to the crossbeam 10, while the other two points accommodate the folding motion of the crossbeam 10 itself. This design solves a complex three-dimensional kinematic problem: it allows a mechanical transmission shaft to maintain its power transmission capability while undergoing significant changes in relative position and angle across multiple planes as its two connected endpoints change. Furthermore, the transmission rod 50 can be rotated around its own axis by the motor 70, adjusting the rotation axes of each rotating folding point 53 to the preset folding direction before folding, ensuring a smooth and interference-free folding process.

[0047] To enhance the product's practicality and user experience, this utility model also includes some user-friendly additional designs: To facilitate the movement of the folded table, four handles 60 are provided on the table frame. Specifically, two handles 60 are located on the two table legs 90, and the other two handles 60 are located on the two tabletops 80. This layout provides users with multiple gripping points when moving heavy objects, allowing for a balanced and ergonomic posture whether carried by one or two people.

[0048] This invention ultimately provides a complete foldable table product. The product includes the aforementioned foldable table frame and a tabletop 80 mounted thereon.

[0049] To ensure a secure connection and precise positioning between the tabletop 80 and the table frame, a support member 81 is provided on the back (i.e., the non-working surface side) of each tabletop 80. This support member 81 has a first slot 811 for positioning the sub-beam 11 during installation, and a second slot 812 for clearing the transmission rod 50. The first slot 811 ensures that the tabletop 80 can be quickly aligned and engaged with the sub-beam 11 during installation, while the second slot 812 provides sufficient clearance for the transmission rod 50, which may move during folding or lifting, ensuring no interference between the components.

[0050] In a preferred embodiment, there are two tabletops 80. As mentioned earlier, when the table frame is in unfolded configuration, the two tabletops 80 are joined side by side to form a seamless work surface. When the table frame is in folded configuration, the two tabletops 80 fold. Each tabletop 80 is fixedly mounted on its corresponding sub-beam 11. Therefore, when the table frame is folded, the two sub-beams 11 rotate relative to each other and retract, and the two tabletops 80 fixed on them also move accordingly. The final result of this linked folding is that the working surfaces of the two tabletops 80 naturally face each other and overlap. This design cleverly utilizes the folding action of the table frame itself to drive the folding of the tabletops 80, and can effectively protect the working surfaces of the tabletops 80 from scratches during transportation. As a specific implementation, the two tabletops 80 can be independent of each other, or they can be connected by hinges or other hinge components, folding along the hinge line when folded.

[0051] Furthermore, this utility model also covers another embodiment in which the table frame retains its foldable characteristic, but the tabletop is a single, unfolded panel. In this embodiment, the user can fold only the table frame during transportation and storage, and then install the entire tabletop onto the unfolded and locked table frame when in use.

[0052] In summary, this utility model, through its ingenious mechanical structure design, perfectly integrates portability, ease of use, and structural stability, providing users with an excellent user experience.

Claims

1. A foldable table, characterized in that, Includes a table frame, said table frame comprising: A crossbeam (10) is configured to switch between an unfolded configuration for supporting a workbench and a folded configuration, wherein in the unfolded configuration at least two portions of the crossbeam (10) are locked to form a rigid whole; and in the folded configuration at least two portions of the crossbeam (10) are released from locking and are in a retracted state by a relative angle change. The column (20) is rotatably connected to the crossbeam (10) so that the column (20) can be unfolded or folded relative to the crossbeam (10); A first folding mechanism is provided at the connection between the column (20) and the crossbeam (10). The first folding mechanism includes a first locking component (30), which is used to lock or unlock the column (20) in the unfolded position relative to the crossbeam (10). A second folding mechanism is disposed on the crossbeam (10). The second folding mechanism includes a second locking component (40) for locking or unlocking the crossbeam (10) in the unfolded configuration.

2. The foldable table according to claim 1, characterized in that, The first locking assembly (30) includes a handle (31), a locking pin (32) linked to the handle (31), and a resilient reset member; The resilient reset element is configured to apply a force to the handle (31) so that the locking pin (32) tends to a locked position; The handle (31) is configured to overcome the force of the elastic reset member when pressed, and drive the locking pin (32) to move to the unlock position; The locking position is the position where the locking pin (32) restricts the rotation of the column (20), and the unlocking position is the position where the locking pin (32) allows the column (20) to rotate.

3. The foldable table according to claim 2, characterized in that, The first folding mechanism further includes at least one rotating component (33) that is fixedly connected to the column (20) and rotatably connected to the crossbeam (10), and the rotating component (33) is provided with a notch (331) that can be engaged by the locking pin (32). The locking position is the position where the locking pin (32) and the notch (331) are engaged with each other, and the unlocking position is the position where the locking pin (32) is disengaged from the notch (331).

4. The foldable table according to claim 1, characterized in that, The second locking assembly (40) is a clamping clamp configured to lock the crossbeam (10) in the unfolded configuration when rotated to the locking position and to unlock the crossbeam (10) when disengaged from the locking position.

5. The foldable table according to claim 4, characterized in that, At least two parts of the crossbeam (10) are two spaced sub-crossbeams (11), each sub-crossbeam (11) is provided with the clamping clamp, and the second folding mechanism also includes a crossbeam connecting rod (12) for connecting the two sub-crossbeams (11). The clamping clamp is configured to press and fix the crossbeam connecting rod (12) to its respective sub-crossbeam (11) to lock the crossbeam (10) in the unfolded configuration.

6. The foldable table according to claim 5, characterized in that, Both of the sub-beams (11) have internal cavities that can accommodate the beam connecting rod (12), which is configured to slide between two positions: A locking position in which the crossbeam connecting rod (12) simultaneously extends into the internal cavities of both sub-crossbeams (11) and is locked by the clamping clamp; and An unlocked position in which the beam connecting rod (12) disengages from the internal cavity of one of the sub-beams (11) to allow the two sub-beams (11) to retract into each other.

7. The foldable table according to claim 1, characterized in that, The uprights (20) are two in number, and the foldable table frame also includes: A motor (70) mounted on one of the columns (20); and A transmission rod (50) connects the motor (70) to another column (20); The motor (70) is configured to drive the column (20) in which it is located to rise and fall, and to drive the other column (20) to rise and fall synchronously via the transmission rod (50); The transmission rod (50) is constructed as a foldable structure to accommodate the unfolding or folding of the column (20) relative to the crossbeam (10), and the conversion of the crossbeam (10) between the unfolded configuration and the folded configuration.

8. The foldable table according to claim 7, characterized in that, The transmission rod (50) includes: One telescopic pole (51); A fixed rod (52) connected to the telescopic rod (51); and Four rotation and folding points (53) are set on the transmission rod (50); The telescopic rod (51) is used to adjust the overall length of the transmission rod (50) during the folding process; Among them, the two rotation folding points (53) are respectively used to accommodate the unfolding or folding of the two columns (20) relative to the crossbeam (10), and the other two rotation folding points (53) are used to accommodate the transformation of the crossbeam (10) between the unfolded configuration and the folded configuration; Furthermore, the transmission rod (50) is configured to adjust the rotation axis of the rotation folding point (53) by its own rotation, so that it is aligned to a preset folding position when folding is required.

9. The foldable table according to claim 1, characterized in that, The table frame is also equipped with handles (60) for carrying.

10. The foldable table according to claim 1, characterized in that, It also includes two tabletops (80) mounted on the crossbeam (10), the two tabletops (80) being configured such that when the crossbeam (10) is in the unfolded configuration, the two tabletops (80) are adjacent to each other to form the work surface; when the crossbeam (10) is in the folded configuration, the two tabletops (80) are overlapping each other and the working surfaces of the two tabletops (80) are opposite each other.

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