A portable foldable reading and writing table
By combining a foldable bracket with a vertical lifting structure, the problem of the reading and writing table bracket being unable to be folded was solved, achieving a balance between portability and stable support.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI NAIDEJIA OPTOELECTRONICS CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-31
AI Technical Summary
Most existing reading and writing desk stands are fixed and cannot be folded, making them inconvenient to store and carry.
A portable foldable reading and writing desk was designed, which adopts a foldable bracket and a vertical lifting structure. The bracket can be folded and hidden in the bracket groove. Combined with the rotating design of the front and rear legs, it can achieve flexible switching between support and storage.
The reading and writing station is folded to a smaller size, making it easy to carry, while also meeting the needs of different height adjustments and providing stable support.
Smart Images
Figure CN224580076U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reading and writing station technology, and in particular to a portable foldable reading and writing station. Background Technology
[0002] Myopia has become a public health problem affecting people's health, and prolonged close-range viewing and working are one of the important factors in the development of myopia. Reading and writing desks are devices that use optical means to project images from near-distance reading to a distance. They utilize far-image technology to transform near-distance reading into far-distance reading, reducing the eye strain associated with near work. In recent years, they have been widely used in the prevention and mitigation of myopia, and have shown some effectiveness in preventing and improving myopia in children.
[0003] In existing technologies, the stands of reading and writing desks are mainly fixed, meaning they cannot be folded. These stands are also quite large, making them inconvenient to store and carry. For example, patent application CN202510404826.2, entitled "A Reading and Writing Desk Device with Peripheral Defocus and Unobstructed View," describes a device where the central area of the image seen by the human eye is a virtual image, while the peripheral area is a real image, thus achieving myopia prevention. However, its stand is fixed, making it inconvenient to store and carry.
[0004] For example, Chinese design patent application CN202430671643.3, entitled "Folding Reading and Writing Desk," is for reading and writing. Although it can be folded, only the desk itself is foldable, not the support structure. Another example is Chinese design patent application CN202430412515.7, also entitled "Reading and Writing Desk," intended for myopia prevention. Its support is also fixed, making it inconvenient to store and carry, and it suffers from the same problem. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a portable foldable reading and writing table, whose bracket can be folded, and the size is smaller after folding, making it easy to store and carry.
[0006] This utility model is achieved using the following technical solution: a portable foldable reading and writing table, including a rear shell and a front shell that can be opened and closed and is located at the front end of the rear shell, and a foldable support. The rear end of the rear shell is provided with a vertical lifting structure, which connects the rear end of the rear shell to the upper part of the foldable support, so that the height of the rear shell above the foldable support can be adjusted. The foldable support includes at least two front legs, which can rotate relative to the lower end of the vertical lifting structure along a first rotation direction and a second rotation direction, so that the front legs can switch between a folded state parallel to the rear shell and an open state perpendicular to or inclined to the rear shell.
[0007] Furthermore, the rear end of the reading and writing station's rear shell is also provided with a bracket groove, and when the vertical lifting structure is compressed to its shortest stroke, the foldable bracket can be folded and hidden in the bracket groove.
[0008] Furthermore, the foldable bracket includes a connecting part for connecting and fixing to the bottom end of the vertical lifting structure; the two ends of the connecting part are provided with damping pivots, and the two front legs are hinged to the two ends of the connecting part through the damping pivots to achieve rotation relative to the vertical lifting structure.
[0009] Furthermore, the front support leg can rotate no more than 270 degrees relative to the lower end of the vertical lifting structure along the first rotation direction, thereby achieving the switching from the folded state to the open state.
[0010] Furthermore, the opening degree between the two front legs is adjustable so that when in the open state, the distance between the front ends of the two front legs is greater than the distance between the two ends of the bracket groove.
[0011] Furthermore, the foldable bracket also includes a rear support leg, which is hinged to the center of the connecting part and has damping when rotated.
[0012] Furthermore, the rear support leg rotates no more than 270 degrees relative to the lower end of the vertical lifting structure along the second rotation direction, and at the maximum rotation angle, the rear support leg and the two open front support legs together form a support relative to the tabletop.
[0013] Furthermore, the rear support leg can be rotated along the first rotation direction to be parallel to the vertical lifting structure, and housed in the vertical lifting structure or between the vertical lifting structure and the rear shell of the reading / writing station.
[0014] Alternatively, the foldable bracket may further include a rear support leg, which is hinged to the connecting part. The rear support leg can rotate relative to the lower end of the vertical lifting structure in a third rotation direction and a fourth rotation direction, thereby realizing the switching between the folded state and the open state.
[0015] Furthermore, the vertical lifting structure includes a slide rail and a slide groove. The slide rail or slide groove is vertically fixed to the center of the rear end of the reading and writing station's rear shell, and the slide rail is installed in the slide groove through a sliding fit.
[0016] Furthermore, the slide rail and the slide groove are damped, so that the slide rail and the slide groove can only slide when an external force is applied.
[0017] Furthermore, the foldable bracket also includes a locking structure for locking the vertical lifting structure in the state when the vertical lifting structure is compressed to its shortest stroke.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] 1. The present invention relates to a portable foldable reading and writing table, which uses front and rear support legs for support, providing a stable support for the reading and writing table. The front and rear support legs and the damping pivot can all rotate, so that they are on the same plane as the slide rail, and are folded and hidden in the bracket groove as a whole, making the reading and writing table smaller in size after folding, and easy to store and carry.
[0020] 2. The present invention provides a portable foldable reading and writing table, which uses a foldable bracket to support the reading and writing table. The stroke of the vertical lifting structure can be adjusted within a certain range to meet certain height requirements. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of a portable foldable reading and writing station provided in an embodiment of the present invention;
[0022] Figure 2 This is a right view of a portable foldable reading and writing station provided in an embodiment of this utility model;
[0023] Figure 3 This is a rear view of a portable foldable reading and writing station provided in an embodiment of the present invention;
[0024] Figure 4 This is a schematic diagram of the structure of the foldable bracket in this utility model when folded into the bracket groove;
[0025] Figure 5 This is a bottom view of the portable foldable reading and writing table of this utility model after it has been folded and stored.
[0026] Figure 6 This is a three-dimensional structural diagram of a portable foldable reading and writing station provided in an embodiment of the present invention;
[0027] Figure 7 This is a schematic diagram of the usage state of the portable foldable reading and writing station provided in an embodiment of this utility model;
[0028] Figure 8 This is another schematic diagram of the portable foldable reading and writing station provided in one embodiment of the present invention.
[0029] In the diagram: front shell of the reader / writer -1; rear shell of the reader / writer -2; vertical lifting structure -3; connecting part -4; front support leg -5; rear support leg -6; damping pivot -7; slide rail -21; slide groove -23; bracket groove -25; locking structure -8; adsorption position -9. Detailed Implementation
[0030] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.
[0031] The purpose of this invention is to address the shortcomings of existing technologies by providing a portable, foldable reading and writing station.
[0032] Example 1
[0033] This embodiment provides a portable, foldable reading and writing station, referring to... Figures 1-2 As shown, the device includes a rear shell 2 and a front shell 1 that can be opened and closed and is located at the front end of the rear shell 2. The front shell 1 and the rear shell 2 constitute the main structure of the reading and writing table. In this embodiment, the main body of the reading and writing table uses a foldable reading and writing table from the prior art, which can extend the viewing distance by 3 to 8 meters to solve the problem of prolonged close-range eye use. The principle and internal structure of the main body of the reading and writing table are not described in detail in this embodiment. The portable foldable reading and writing table also includes a foldable support. A vertical lifting structure is provided at the rear end of the rear shell 2. The vertical lifting structure connects the rear end of the rear shell 2 to the upper part of the foldable support, so that the height of the rear shell 2 above the foldable support can be adjusted to meet the adjustment needs of the main body of the reading and writing table within a certain height range.
[0034] Reference Figures 1-3 As shown, specifically, the vertical lifting structure 3 includes a slide rail 21 and a slide groove 23. The slide groove 23 is vertically fixed to the center of the rear end of the reading and writing station's rear shell 2. The upper end of the slide rail 21 is detachably slidably installed in the slide groove 23. There is damping between the slide rail 21 and the slide groove 23, so that the slide rail 21 and the slide groove 23 will only slide relative to each other when an external force is applied. The foldable bracket can be detached from the rear end of the reading and writing station's rear shell 2 and separated from the whole machine as a separate module for easy carrying.
[0035] This utility model discloses a portable foldable reading and writing table. When in use, the foldable bracket provides support for the reading and writing table. The stroke of the vertical lifting structure can be adjusted within a certain range to meet certain height requirements. The foldable bracket is detachably connected to the rear end of the reading and writing table's rear shell 2. The foldable bracket 3 can be folded and removed, making it separate from the whole machine as a separate module, which is convenient to carry. This makes the reading and writing table smaller in size after folding, thus making it easy to store and carry.
[0036] Example 2
[0037] This embodiment provides a portable, foldable reading and writing station, referring to... Figures 1-2 As shown, the device includes a rear shell 2 and a front shell 1 that can be opened and closed and is located at the front end of the rear shell 2. The front shell 1 and the rear shell 2 constitute the main structure of the reading and writing table. In this embodiment, the main body of the reading and writing table uses a foldable reading and writing table from the prior art, which can extend the viewing distance by 3 to 8 meters to solve the problem of prolonged close-range eye use. The principle and internal structure of the main body of the reading and writing table are not described in detail in this embodiment. The portable foldable reading and writing table also includes a foldable support. The rear end of the rear shell 2 is provided with a vertical lifting structure, which connects the rear end of the rear shell 2 to the upper part of the foldable support, so that the height of the rear shell 2 above the foldable support can be adjusted to meet the adjustment needs of the main body of the reading and writing table within a certain height range.
[0038] Reference Figures 1-5 As shown, specifically, the vertical lifting structure 3 includes a slide rail 21 and a slide groove 23. The slide groove 23 is vertically fixed to the center of the rear end of the reading and writing table's rear shell 2. The upper end of the slide rail 21 is slidably installed in the slide groove 23. There is damping between the slide rail 3 and the slide groove 23, so that the slide rail 21 and the slide groove 23 will only slide relative to each other when pressed downwards manually. The rear end of the reading and writing table's rear shell 2 is also provided with a bracket groove 25. When the vertical lifting structure is compressed to its shortest stroke, the foldable bracket is close to the bottom end of the reading and writing table's rear shell 2. At this time, the foldable bracket can be folded and hidden in the bracket groove 25. Through this structural design, the foldable bracket does not need to be removed separately from the rear end of the reading and writing table's rear shell 2, and it is also easy to carry.
[0039] This utility model discloses a portable foldable reading and writing table. In use, a foldable support frame provides support for the reading and writing table. The vertical lifting structure's stroke can be adjusted within a certain range to meet specific height requirements. The foldable support frame can be folded. When the vertical lifting structure is compressed to its shortest stroke, the foldable support frame is located close to the bottom of the rear shell 2 of the reading and writing table. At this time, the foldable support frame can be folded and hidden within the support groove 25, making the reading and writing table smaller in size after folding, thus facilitating storage and carrying.
[0040] Example 3
[0041] This embodiment provides a portable, foldable reading and writing station, referring to... Figures 1-5 As shown, the device includes a rear shell 2 and a front shell 1 that can be opened and closed and is located at the front end of the rear shell 2. The front shell 1 and the rear shell 2 constitute the main structure of the reading and writing table. In this embodiment, the main body of the reading and writing table uses a foldable reading and writing table from the prior art, which can extend the viewing distance by 3 to 8 meters to solve the problem of prolonged close-range eye use. The principle and internal structure of the main body of the reading and writing table are not described in detail in this embodiment. The portable foldable reading and writing table also includes a foldable support. A vertical lifting structure is provided at the rear end of the rear shell 2. The vertical lifting structure connects the rear end of the rear shell 2 to the upper part of the foldable support, so that the height of the rear shell 2 above the foldable support can be adjusted to meet the adjustment needs of the main body of the reading and writing table within a certain height range.
[0042] Reference Figures 1-5 As shown, specifically, the vertical lifting structure 3 includes a slide rail 21 and a slide groove 23. The slide groove 23 is vertically fixed to the center of the rear end of the reading and writing table's rear shell 2. The upper end of the slide rail 21 is slidably installed in the slide groove 23. There is damping between the slide rail 21 and the slide groove 23, so that the slide rail 3 will only slide with the slide groove 23 when manually pressed downwards. The rear end of the reading and writing table's rear shell 2 is also provided with a bracket groove 25. When the vertical lifting structure 3 is compressed to its shortest stroke, the foldable bracket is close to the bottom end of the reading and writing table's rear shell 2. At this time, the foldable bracket can be folded and hidden in the bracket groove 25.
[0043] Reference Figures 1-5 As shown, the foldable bracket includes at least a connecting part 4 for connection and fixation to the bottom end of the vertical lifting structure 3. Damping pivots 7 are provided at both ends of the connecting part 4. The foldable bracket includes at least two front support legs 5, which are hinged to both ends of the connecting part 4 via the damping pivots 7. The front support legs 5 can rotate relative to the lower end of the vertical lifting structure in a first rotation direction (see reference). Figure 2 The directions shown are clockwise and the second rotation direction (reference). Figure 2 The front support leg 5 is rotated (in a counter-clockwise direction) to switch between a folded state parallel to the rear shell 2 of the reader / writer and an open state perpendicular to or inclined to the rear shell 2 of the reader / writer.
[0044] The front support leg 5 can rotate no more than 270 degrees relative to the lower end of the vertical lifting structure along the first rotation direction to put the front support leg 5 in the open state; and the opening degree between the two front support legs 5 is adjustable so that when the front support legs are in the open state, the distance between the front ends of the two front support legs 5 is greater than the distance between the two ends of the bracket groove 25. When the front support leg 5 is rotated to be parallel to the vertical lifting structure 3, and the vertical lifting structure 3 is compressed to its shortest stroke, the front support leg 5 can be folded and hidden in the bracket groove 25.
[0045] Reference Figures 1-5 As shown, the foldable support also includes a rear support leg 6, which is positioned relative to the lower end of the vertical lifting structure 3 along a second rotation direction (see reference). Figure 2 The orientation shown is counterclockwise. The table can rotate no more than 270 degrees, and at the maximum rotation angle, the rear support leg 6 and the two open front support legs 5 together form a support relative to the tabletop. The rear support leg 6 is hinged to the center of the connecting part 4, and its rotation is damped. For support, the two front support legs 5 can be rotated horizontally relative to the damping pivot 7, and the rear support leg 6 can be rotated tilted relative to the damping pivot 7. The cooperation between the front support legs 5 and the rear support leg 6 provides support, making the reading / writing table more stable.
[0046] When the rear support leg 6 rotates to be parallel to the vertical lifting structure 3, the rear support leg 6 is located between the slide rail 21 and the rear shell 2 of the reading and writing table. The rear support leg 6 is close to the slide rail 21 and can be inserted into the slide groove 23 together with the slide rail 21 for storage.
[0047] This utility model discloses a portable foldable reading and writing table. In use, the front support leg 5 and the rear support leg 6 cooperate to provide stable support for the reading and writing table. The front support leg 5, the rear support leg 6 and the damping pivot 7 can all rotate so that they are on the same plane as the slide rail 21. At this time, the vertical lifting structure is compressed to the shortest stroke so that the foldable bracket is close to the bottom of the rear shell 2 of the reading and writing table. At this time, the foldable bracket can be folded and hidden in the bracket groove 25, so that the reading and writing table is smaller in size after folding, making it easy to store and carry.
[0048] Example 4
[0049] This embodiment provides a portable, foldable reading and writing station, referring to... Figures 6-8As shown, the device includes a rear shell 2 and a front shell 1 that can be opened and closed and is located at the front end of the rear shell 2. The front shell 1 and the rear shell 2 constitute the main structure of the reading and writing table. In this embodiment, the main body of the reading and writing table uses a foldable reading and writing table from the prior art, which can extend the viewing distance by 3 to 8 meters to solve the problem of prolonged close-range eye use. The principle and internal structure of the main body of the reading and writing table are not described in detail in this embodiment. The portable foldable reading and writing table also includes a foldable support. A vertical lifting structure 3 is provided at the rear end of the rear shell 2. The vertical lifting structure 3 connects the rear end of the rear shell 2 to the upper part of the foldable support, so that the height of the rear shell 2 above the foldable support can be adjusted to meet the adjustment needs of the main body of the reading and writing table within a certain height range.
[0050] Reference Figures 6-8 As shown, specifically, the vertical lifting structure 3 includes a slide rail 21 and a slide groove 23. The slide groove 23 is vertically fixed to the center of the rear end of the reading and writing table's rear shell 2. The lower end of the slide rail 21 is detachably slidably installed in the slide groove 23. There is damping between the slide rail 21 and the slide groove 23, so that the slide rail 21 and the slide groove 23 will only slide relative to each other when an external force is applied. The foldable bracket can be detached from the rear end of the reading and writing table's rear shell 2 and separated from the whole machine as a separate module for easy carrying.
[0051] The vertical lifting structure 3 also includes a locking structure 8. When the vertical lifting structure 3 is compressed to its shortest stroke, the locking structure 8 can lock it in this state. At this time, the foldable bracket is close to the bottom of the reader / writer's rear shell 2, and it can be folded. This design eliminates the need to remove the foldable bracket separately from the rear of the reader / writer's rear shell 2, making it easy to carry. In the illustrated embodiment, the locking structure 8 includes a key and locking holes on the slide rail 21 and the slide groove 23. The vertical lifting structure 3 is locked in its shortest stroke state by simultaneously inserting the key into the locking holes of both the slide rail 21 and the slide groove 23 and turning the key. The key can be fixedly connected to the slide rail 21 or removed and stored in the magnetic attachment position 9 of the foldable bracket.
[0052] Reference Figures 6-8 As shown, the foldable bracket also includes a connecting part 4 for connecting and fixing to the bottom end of the vertical lifting structure 3. Damping pivots 7 are provided at both ends of the connecting part 4. The foldable bracket includes at least two front support legs 5, which are hinged to both ends of the connecting part 4 via the damping pivots 7. The front support legs 5 can rotate relative to the lower end of the vertical lifting structure in a first rotation direction (see reference). Figure 6 The directions shown are clockwise and the second rotation direction (reference). Figure 6The front support leg 5 can be rotated (in a counter-clockwise direction) to switch between a folded state parallel to the rear shell 2 of the reader / writer and an open state perpendicular to the rear shell 2. The front support leg 5 can rotate no more than 270 degrees relative to the lower end of the vertical lifting structure along the first rotation direction to be in the open state. When the front support leg 5 is rotated to be parallel to the vertical lifting structure 3, the front support leg 5 folds and retracts when the vertical lifting structure 3 is compressed to its shortest stroke.
[0053] The foldable support also includes a rear support leg 6, which is positioned relative to the lower end of the vertical lifting structure 3 along the third and fourth rotational directions (see reference). Figure 6 The directions shown represent opposite rotation directions within the horizontal plane. Rotation allows switching between the folded and open states. The rear support leg 6 can rotate no more than 180 degrees, and at any opening angle, the rear support leg 6 and the two open front support legs 5 together provide support relative to the tabletop. The rear support leg 6 is hinged to the connecting part 4, and its rotation is damped. When not in use, the rear support leg 6 can be rotated to the storage space under the connecting part 4, for example, by magnetically attaching to the back of the connecting part 4.
[0054] For example, when providing support, the two front support legs 5 can be rotated 270 degrees along the first rotation direction to a horizontal position, and the rear support leg 6 can be rotated 90 degrees in the horizontal plane. The front support legs 5 and the rear support legs 6 work together to provide support, making the reading and writing table more stable.
[0055] This utility model discloses a portable foldable reading and writing table. In use, the front support leg 5 and the rear support leg 6 cooperate to provide stable support for the reading and writing table. The front support leg 5, the rear support leg 6 and the connecting part 4 can all rotate so that they are on the same plane as the slide rail 21. At this time, the vertical lifting structure is compressed to the shortest stroke, so that the foldable bracket is close to the bottom of the rear shell 2 of the reading and writing table, making the size of the reading and writing table smaller after folding, thus making it easy to store and carry.
[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. It should be pointed out that for those skilled in the art, several improvements and modifications can be made to this invention without departing from the principles of the invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.
Claims
1. A portable foldable reading and writing station, comprising a rear shell (2) and a front shell (1) that can be opened and closed and disposed at the front end of the rear shell (2), characterized in that: It also includes a foldable bracket, and the rear end of the reading and writing table rear shell (2) is also provided with a vertical lifting structure (3). The vertical lifting structure (3) connects the rear end of the reading and writing table rear shell (2) to the upper part of the foldable bracket, so that the height of the reading and writing table rear shell (2) above the foldable bracket can be adjusted. The foldable bracket includes at least two front legs (5), which can rotate relative to the lower end of the vertical lifting structure (3) along a first rotation direction and a second rotation direction, so that the front legs (5) can switch between a folded state parallel to the rear shell (2) of the reading and writing table and an open state perpendicular to or inclined to the rear shell (2) of the reading and writing table.
2. The portable, foldable reading and writing table according to claim 1, characterized in that: The rear end of the reading and writing station's rear shell (2) is also provided with a bracket groove (25). When the vertical lifting structure is compressed to its shortest stroke, the foldable bracket can be folded and hidden in the bracket groove (25).
3. The portable, foldable reading and writing table according to claim 2, characterized in that: The foldable bracket includes a connecting part (4) for connecting and fixing to the bottom end of the vertical lifting structure; the two ends of the connecting part (4) are provided with damping pivots (7), and the two front legs (5) are hinged to the two ends of the connecting part (4) through the damping pivots (7) to achieve rotation relative to the vertical lifting structure (3).
4. The portable, foldable reading and writing table according to claim 3, characterized in that: The front support leg (5) can rotate no more than 270 degrees relative to the lower end of the vertical lifting structure along the first rotation direction, thereby realizing the switching between the folded state and the open state.
5. The portable, foldable reading and writing table according to claim 3, characterized in that: The opening degree between the two front legs (5) is adjustable so that when in the open state, the distance between the front ends of the two front legs (5) is greater than the distance between the two ends of the bracket groove (25).
6. The portable, foldable reading and writing table according to claim 3, characterized in that: The foldable bracket also includes a rear support leg (6), which is hinged to the center of the connecting part (4) and has damping when rotating.
7. The portable, foldable reading and writing table according to claim 6, characterized in that: The rear support leg (6) rotates no more than 270 degrees relative to the lower end of the vertical lifting structure along the second rotation direction, and at the maximum rotation angle, the rear support leg (6) and the two open front support legs (5) together form a support relative to the tabletop.
8. The portable, foldable reading and writing table according to claim 7, characterized in that: The rear support leg (6) can rotate along the first rotation direction to be parallel to the vertical lifting structure (3) and be housed in the vertical lifting structure (3) or between the vertical lifting structure (3) and the reading and writing table rear shell (2).
9. The portable, foldable reading and writing table according to claim 3, characterized in that: The foldable bracket also includes a rear support leg (6), which is hinged to the connecting part (4). The rear support leg (6) can rotate relative to the lower end of the vertical lifting structure (3) along the third rotation direction and the fourth rotation direction, thereby realizing the switching between the folded state and the open state.
10. The portable, foldable reading and writing stand according to any one of claims 1 to 9, characterized in that: The vertical lifting structure includes a slide rail (21) and a slide groove (23). The slide groove (23) or the slide rail (21) is vertically fixed in the center of the rear end of the reading and writing table rear shell (2). The slide rail (21) is installed in the slide groove (23) by sliding fit.
11. The portable, foldable reading and writing table according to claim 10, characterized in that: The slide rail (21) and the slide groove (23) are damped, and the slide rail (21) and the slide groove (23) can only slide when an external force is applied.
12. The portable, foldable reading and writing table according to claim 10, characterized in that: The foldable support further comprises a locking structure (8) for locking the vertical lifting structure (3) in the shortest stroke condition.