Adjustable drawing board table

Through the linkage structure of the support platform, the drawing board and the writing board, convenient adjustment of the drawing board table is achieved, which solves the inconvenience of adjustment of the tools that need to be cleaned in the prior art and improves the use efficiency.

CN223335754UActive Publication Date: 2025-09-16LILANG KINDERGARTEN NANWAN STREET LONGGANG DISTRICT SHENZHEN
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Patent Information

Application Number
CN202422775547.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-14
Publication Date
2025-09-16
Estimated Expiration
2034-11-14

AI Technical Summary

Technical Problem

When adjusting the angle of the existing drawing board table, the table tools need to be cleaned, which makes the adjustment inconvenient and inefficient.

Method used

The support platform is designed to be linked with the drawing board and writing board. By rotating the writing board to avoid the swing trajectory of the drawing board, angle adjustment can be achieved without the need for cleaning tools.

Benefits of technology

The ease of use and adjustment efficiency of the drawing board table are improved, and the rolling and support loss of tools during the cleaning process are avoided.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an adjustable drawing board table, which belongs to the technical field of teaching aids and structurally comprises a support table, a drawing board and a writing board. Wherein the supporting table is provided with a plurality of sets of telescopic components, and a groove penetrating in the front-back direction is formed in the upper side face of the supporting table; the drawing board is hinged in the groove, and a plurality of limiting structures are arranged between the drawing board and the supporting table so as to swing relative to the supporting table and be fixed in an inclined state or a horizontal state. The writing board is arranged on the upper side face of the supporting table so as to seal the groove and limit swing of the drawing board in the horizontal state, and the writing board can rotate in the horizontal direction relative to the supporting table so as to avoid the swing track of the drawing board. During actual use, the writing board rotates along the horizontal direction, so that tools on the writing board do not need to be cleaned during adjustment. According to the adjustable drawing board table, the process of cleaning the table top can be omitted, and the convenience and the adjusting efficiency of the drawing board table in the using process are ensured.
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Description

Technical Field

[0001] The present application belongs to the technical field of teaching tools, and specifically relates to an adjustable drawing board table. Background Art

[0002] A drawing board table is a table that combines drawing and writing functions. It is usually equipped with adjustable table angle and height to adapt to the drawing posture and creative needs of different users.

[0003] A common drawing board table in the prior art consists of a bracket and a table top. The table top is hinged to the bracket, and the angle of the table top is adjusted by relative swinging of the table top and the bracket to facilitate writing and drawing.

[0004] The inventors discovered that existing drawing tables require tools to be cleaned before adjusting the angle of the tabletop to prevent them from rolling off under their own weight after the tabletop tilts. However, this cleaning process is time-consuming, and there's no suitable storage space for cleaned tools, ultimately resulting in inconvenient and inefficient adjustment. Utility Model Content

[0005] The embodiment of the present application provides an adjustable drawing board table, which is intended to eliminate the process of cleaning the desktop and ensure the convenience and adjustment efficiency of the drawing board table during use.

[0006] To achieve the above objectives, the technical solution adopted in this application is:

[0007] Provided is an adjustable drawing board table, comprising:

[0008] A support platform, the lower side of which has a plurality of telescopic members for supporting the horizontal plane; the upper side of the support platform is provided with a groove, and the groove runs through both sides of the support platform in the front-to-back direction;

[0009] A drawing board is disposed in the groove and hinged to the inner wall of the groove in the left-right direction, adapted to swing to an inclined state partially extending out of the groove, or to a horizontal state embedded in the groove; a plurality of limiting structures are provided between the drawing board and the support platform, the limiting structures being used to connect the drawing board and the support platform to limit the swinging of the drawing board; and

[0010] The writing board is arranged on the upper side of the support platform to close the groove and limit the swing of the drawing board in the horizontal state; and the writing board can also rotate horizontally relative to the support platform to avoid the swing trajectory of the drawing board.

[0011] In a possible implementation, the limiting structure includes:

[0012] a sliding seat, slidably disposed on the support platform in a front-to-rear direction, and having a positioning member adapted to engage with the support platform to limit movement of the sliding seat; and

[0013] a swing arm, one end of which is hinged to the sliding seat in the left-right direction, and the other end of which is hinged to the drawing board in the left-right direction;

[0014] When the sliding seat slides, the swing arm swings and the drawing board swings synchronously, so that the drawing board swings to the horizontal state or the inclined state.

[0015] In one possible implementation, the support platform is provided with a guide hole extending vertically and forwardly, and the sliding seat is slidably disposed in the guide hole; and the lower side of the support platform is provided with a plurality of positioning grooves spaced apart in the forward and backward directions, and the positioning member includes:

[0016] a connecting member fixedly disposed at the lower end of the sliding seat; and

[0017] a pull plate, disposed on the lower side of the connecting member and having a protrusion extending upward and suitable for being inserted into any one of the positioning grooves;

[0018] Wherein, the pull plate is connected to the connecting member through an elastic member; when the protrusion is inserted into the positioning groove, the elastic member can limit the downward movement of the pull plate to limit the protrusion from being separated from the positioning groove.

[0019] In one possible implementation, a reserved groove is provided on the lower end surface of the connecting member, and the pull plate has a guide rod inserted into the reserved groove; the elastic member is a spring sleeved on the outer periphery of the guide rod, and the two ends of the spring are respectively connected to the insertion end of the guide rod and the notch of the reserved groove, so that when the protrusion is inserted into the positioning groove, the spring is in a free state or an elastically compressed state.

[0020] In one possible implementation, a sunken groove is provided on the inner side of the drawing board, and the swing arm is hinged in the sunken groove, so that when the drawing board is in the horizontal state, the lower side of the drawing board abuts against the bottom of the groove and the swing arm is embedded in the sunken groove.

[0021] In a possible implementation, the telescopic member includes:

[0022] The base is used to support a horizontal surface, and its upper side has a plurality of sleeves arranged in parallel along a straight line and extending upward; the sleeves are all hollow inside and open upward, and each sleeve has a plurality of through-holes spaced apart in the vertical direction, and each through-hole is continuous along the straight line.

[0023] A plurality of insertion rods are fixedly arranged on the lower side of the support platform, each of the insertion rods extends downward so as to be inserted into the plurality of the sleeves in a one-to-one correspondence; each of the insertion rods is provided with an alignment hole adapted to communicate with any corresponding one of the through holes; and

[0024] The docking rod is suitable for being inserted into the mutually connected through-hole and the alignment hole along the straight direction to support the insertion rod and limit the relative movement of the insertion rod and the sleeve; and both ends of the docking rod have anti-slip end caps made of elastic material for abutting the outer wall of the sleeve.

[0025] In a possible implementation, a receiving slot for storing painting tools is provided on the upper side of the support platform, and a blocking cover is hingedly connected thereto for closing or avoiding the opening of the receiving slot.

[0026] In one possible implementation, the upper side surface of the support platform is provided with a strip groove extending in the front-to-back direction, and the writing board has a connecting shaft extending downward and slidingly engaged in the strip groove, so that the writing board can rotate about the connecting shaft and can also move synchronously with the connecting shaft.

[0027] In one possible implementation, two limit grooves are provided at the bottom of the strip groove, a through hole is provided on the writing board that is coaxially connected to any one of the limit grooves, and a stop rod is inserted into the through hole that is suitable for inserting into the limit groove to limit the rotation of the writing board.

[0028] In one possible implementation, the writing board includes:

[0029] A first plate body is provided on the writing board, and the connecting shaft and the through hole are both provided on the first plate body; and

[0030] a second plate body, detachably connected to the first plate body;

[0031] When the first plate body rotates to the second plate body to avoid the swinging track of the drawing board, the second plate body is located outside the support platform.

[0032] In the embodiment of the present application, the support platform is secured to a horizontal surface by means of the structure of the telescopic member and the horizontal surface. Based on this, a user can sit in front of or behind the support platform to write or draw. When the user is writing, the writing board can support the paper and remain horizontal under the support of the support platform, ensuring efficient and effective writing. When the user is drawing, the writing board can be rotated to a position that avoids the swing path of the drawing board, while the drawing board can be manually swung outward to a tilted position that is more conducive to drawing. Finally, the support platform is fixed in position using a limit structure to ensure efficient and effective drawing.

[0033] Before the drawing board is put out, it is adjusted by rotating the writing board horizontally, so there is no need to clean the items on the writing board, and the items will not lose support and fall out.

[0034] Compared with the prior art, the adjustable drawing board table provided in this embodiment can eliminate the need for cleaning the desktop, thereby ensuring the convenience and adjustment efficiency of the drawing board table during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 This is one of the three-dimensional structural schematic diagrams of the adjustable drawing board table provided in an embodiment of the present application;

[0037] Figure 2 This is a second schematic diagram of the three-dimensional structure of the adjustable drawing board table provided in an embodiment of the present application;

[0038] Figure 3 The third schematic diagram of the three-dimensional structure of the adjustable drawing board table provided in an embodiment of the present application;

[0039] Figure 4 A schematic diagram of the exploded structure of the writing board used in the embodiment of the present application;

[0040] Figure 5 This is a schematic diagram of the exploded structure of the telescopic member used in the embodiment of the present application;

[0041] Figure 6 This is a schematic structural diagram of the drawing board and swing arm used in the embodiment of the present application in the assembled state;

[0042] Figure 7This is a schematic structural diagram of the support platform and the limiting structure used in the embodiment of the present application in an assembled state;

[0043] Figure 8 A partially enlarged schematic diagram of a support platform used in an embodiment of the present application in a cross-sectional perspective;

[0044] Figure 9 This is a schematic structural diagram of the limiting structure and positioning member used in the embodiment of the present application in an assembled state;

[0045] Figure 10 A schematic cross-sectional view of the positioning member used in an embodiment of the present application;

[0046] Explanation of the accompanying drawings: 1. Support platform; 11. Groove; 12. Guide hole; 13. Positioning groove; 14. Accommodating groove; 15. Cover; 16. Strip groove; 161. Limiting groove; 2. Drawing board; 21. Sinking groove; 3. Writing board; 31. First plate body; 311. Connecting shaft; 312. Through hole; 313. Stop rod; 32. Second plate body; 4. Telescopic member; 41. Base; 411. Sleeve; 412. Through hole; 42. Insert rod; 421. Alignment hole; 43. Docking rod; 431. Anti-slip end cap; 5. Limiting structure; 51. Sliding seat; 52. Swing arm; 6. Positioning member; 61. Connecting member; 611. Reserved groove; 62. Pull plate; 621. Protrusion; 622. Guide rod; 7. Elastic member. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0048] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0051] Please also refer to Figures 1 to 10 The adjustable drawing board table provided in this application is now described. The adjustable drawing board table proposed in this application includes a support platform 1, a drawing board 2 and a writing board 3.

[0052] The support platform 1 is designed to be placed in front of or behind the user. Its underside is equipped with several sets of telescopic members 4 for supporting it on a horizontal surface. During actual use, the height of the support platform 1 can be adjusted by adjusting the telescopic members 4. A groove 11 is defined on the upper side of the support platform 1, extending from front to back through both sides.

[0053] Drawing board 2 is positioned within recess 11 and hingedly connected to the inner wall of recess 11 in the left-right direction, allowing it to swing to a tilted position, partially extending outside recess 11, or to a horizontal position embedded within recess 11. Several sets of limiting structures 5 are positioned between drawing board 2 and support platform 1. Each set of limiting structures 5 connects drawing board 2 to support platform 1 to limit the swing of drawing board 2, maintaining it in a horizontal or tilted position.

[0054] The writing board 3 is arranged on the upper side of the support platform 1 to close the groove 11 and limit the swing of the drawing board 2 in a horizontal state; and in actual use, the writing board 3 can also rotate horizontally relative to the support platform 1 to avoid the swing trajectory of the drawing board 2.

[0055] In this embodiment of the present application, the structure of the telescopic member 4 and the horizontal plane secures the support platform 1 to a horizontal surface. This allows the user to sit in front of or behind the support platform 1 to write or draw. While writing, the writing board 3 supports the paper and remains horizontal under the support of the support platform 1, ensuring efficient and effective writing. When drawing, the writing board 3 can be rotated to a position that avoids the swing path of the drawing board 2, while the drawing board 2 is manually swung outward to a tilted position more conducive to drawing. Finally, the position of the support platform 1 is secured using the limiting structure 5, ensuring efficient and effective drawing.

[0056] Before the drawing board 2 is put out, it is adjusted by horizontally rotating the writing board 3, so there is no need to clean the items on the writing board 3, and the items will not lose support and fall out.

[0057] Compared with the prior art, the adjustable drawing board table provided in this embodiment can eliminate the need for cleaning the desktop, thereby ensuring the convenience and adjustment efficiency of the drawing board table during use.

[0058] In some embodiments, as Figure 3 and Figure 9 As shown, the limiting structure 5 includes a sliding seat 51 and a swing arm 52 .

[0059] The sliding seat 51 is slidably disposed on the support platform 1 along the front-rear direction, and the sliding seat 51 has a positioning member 6 suitable for connecting with the support platform 1 to limit the movement of the sliding seat 51 .

[0060] The swing arm 52 adopts a bar structure extending in a straight line. One end of the swing arm 52 is hinged to the sliding seat 51 along the left-right direction, and the other end is hinged to the drawing board 2 along the left-right direction.

[0061] By adopting the above technical solution, when the sliding seat 51 slides, the swing arm 52 swings and the drawing board 2 swings synchronously, so that the drawing board 2 swings and remains in a horizontal state or an inclined state.

[0062] In some embodiments, as Figure 9 and Figure 10 As shown, a guide hole 12 is provided on the support platform 1 which penetrates in the up-down direction and extends in the front-back direction. The aforementioned sliding seat 51 is slidably arranged in the guide hole 12 to realize the sliding connection relationship between the sliding seat 51 and the support platform 1.

[0063] The lower side surface of the support platform 1 is provided with a plurality of positioning grooves 13 spaced apart along the front-to-back direction. Based on this, the positioning member 6 includes a connecting piece 61 and a pull plate 62 .

[0064] The connecting member 61 is fixedly disposed on the lower end of the sliding seat 51 , specifically, is fixed in a detachable connection manner.

[0065] The pull plate 62 is provided on the lower side of the connecting member 61 and has a protrusion 621 extending upward and suitable for being inserted into any one of the positioning grooves 13 . In this embodiment, there are two protrusions 621 and two positioning grooves 13 to ensure balance on both sides.

[0066] The pull plate 62 is connected to the connecting member 61 via an elastic member 7 . When the protrusion 621 is inserted into the positioning groove 13 , the elastic member 7 can limit the pull plate 62 from moving downward, thereby preventing the protrusion 621 from leaving the positioning groove 13 .

[0067] In some embodiments, as Figure 10As shown, a reserved groove 611 is provided on the lower end surface of the connecting member 61, and a guide rod 622 is provided on the pull plate 62 and inserted into the reserved groove 611; the aforementioned elastic member 7 is a spring sleeved on the outer periphery of the guide rod 622, and the two ends of this spring are respectively connected with the insertion end of the guide rod 622 and the notch of the reserved groove 611, so that when the protrusion 621 is inserted into the positioning groove 13, the spring is in a free state or an elastically compressed state, thereby preventing the protrusion 621 from detaching from the positioning groove 13 without external force.

[0068] In some embodiments, as Figure 6 As shown, a sunken groove 21 is provided on the inner side surface of the drawing board 2, and the swing arm 52 is hinged in the sunken groove 21, so that when the drawing board 2 is in a horizontal state, the lower side surface of the drawing board 2 abuts against the bottom of the groove 11 and the swing arm 52 is embedded in the sunken groove 21, thereby realizing the hidden use of the swing arm 52 relative to the drawing board 2.

[0069] In some embodiments, as Figure 5 As shown, the telescopic member 4 includes a base 41 , a plurality of insertion rods 42 and a docking rod 43 .

[0070] The base 41 is used to support a horizontal plane, and its upper side has multiple sleeves 411 arranged side by side in a straight line and extending upward; each sleeve 411 adopts a structure with a hollow interior and an opening facing upward, and each sleeve 411 has multiple through-holes 412 arranged at intervals in the up-down direction, and each through-hole 412 passes through along the aforementioned straight line direction.

[0071] Multiple insertion rods 42 are fixedly set on the lower side of the support platform 1, and each insertion rod 42 extends downward to be suitable for one-to-one insertion into multiple sleeves 411; and each insertion rod 42 is provided with a positioning hole 421 suitable for communicating with any corresponding through-hole 412.

[0072] The docking rod 43 is suitable for being inserted into the interconnected through-hole 412 and the alignment hole 421 along the aforementioned straight direction to support the insertion rod 42 and limit the relative movement of the insertion rod 42 and the sleeve 411; and both ends of the docking rod 43 have anti-slip end caps 431 made of elastic material for abutting the outer wall of the sleeve 411.

[0073] In some embodiments, as Figure 7 As shown, a receiving groove 14 for storing painting tools is provided on the upper side of the support platform 1 , and a blocking cover 15 is hingedly connected thereto for closing or avoiding the opening of the receiving groove 14 .

[0074] In some embodiments, as Figure 4 and Figure 8As shown, the upper side surface of the support platform 1 is provided with a strip groove 16 extending in the front-to-back direction, and the writing board 3 has a connecting shaft 311 extending downward and slidingly embedded in the strip groove 16, so that the writing board 3 can rotate around the connecting shaft 311 as the axis and can also move synchronously with the connecting shaft 311.

[0075] In some embodiments, as Figure 4 and Figure 8 As shown, two limiting grooves 161 are provided at the bottom of the strip groove 16, and a through hole 312 is provided on the writing board 3, which is suitable for being coaxially connected to any one of the limiting grooves 161, and a stop rod 313 is inserted into the through hole 312 to limit the rotation of the writing board 3.

[0076] In some embodiments, as Figure 2 As shown, the writing board 3 includes a first board body 31 and a second board body 32 .

[0077] The first plate body 31 is disposed on the writing board 3 , and the connecting shaft 311 and the through hole 312 are both disposed on the first plate body 31 .

[0078] The second plate 32 is detachably connected to the first plate 31 ; when the first plate 31 rotates to allow the second plate 32 to avoid the swinging trajectory of the drawing board 2 , the second plate 32 is located outside the support platform 1 .

[0079] It should be noted that, in this embodiment, the first plate body 31 is provided with outwardly extending slats, and the second plate body 32 has a groove structure suitable for the slats to be embedded; the first plate body 31 and the second plate body 32 are combined through the plug-in relationship between the slats and the grooves, and the slats serve to support the second plate body 32 in a suspended state.

[0080] After adopting the above structure, in order to prevent the first plate 31 and the second plate 32 from moving relative to each other, a hole is further provided on the second plate 32, and a rubber block capable of being embedded in the hole is further provided on the support platform 1.

[0081] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. Adjustable drawing board table, characterized by: include: A support platform, the lower side of which has a plurality of telescopic members for supporting the horizontal plane; the upper side of the support platform is provided with a groove, and the groove runs through both sides of the support platform in the front-to-back direction; A drawing board is disposed in the groove and hinged to the inner wall of the groove in the left-right direction, adapted to swing to an inclined state partially extending out of the groove, or to a horizontal state embedded in the groove; a plurality of limiting structures are provided between the drawing board and the support platform, the limiting structures being used to connect the drawing board and the support platform to limit the swinging of the drawing board; as well as The writing board is arranged on the upper side of the support platform to close the groove and limit the swing of the drawing board in the horizontal state; and the writing board can also rotate horizontally relative to the support platform to avoid the swing trajectory of the drawing board.

2. The adjustable drawing board table according to claim 1, characterized in that: The limiting structure includes: a sliding seat, slidably disposed on the support platform in a front-to-rear direction, and having a positioning member adapted to engage with the support platform to limit movement of the sliding seat; and a swing arm, one end of which is hinged to the sliding seat in the left-right direction, and the other end of which is hinged to the drawing board in the left-right direction; When the sliding seat slides, the swing arm swings and the drawing board swings synchronously, so that the drawing board swings to the horizontal state or the inclined state.

3. The adjustable drawing board table according to claim 2, characterized in that: The support platform is provided with a guide hole extending in the vertical direction and in the front-to-back direction, and the sliding seat is slidably arranged in the guide hole; and the lower side of the support platform is provided with a plurality of positioning grooves spaced apart in the front-to-back direction, and the positioning member includes: a connecting member fixedly disposed at the lower end of the sliding seat; and a pull plate, disposed on the lower side of the connecting member and having a protrusion extending upward and suitable for being inserted into any one of the positioning grooves; Wherein, the pull plate is connected to the connecting member through an elastic member; when the protrusion is inserted into the positioning groove, the elastic member can limit the downward movement of the pull plate to limit the protrusion from being separated from the positioning groove.

4. The adjustable drawing board table according to claim 3, characterized in that: A reserved groove is provided on the lower end surface of the connecting piece, and the pull plate has a guide rod inserted into the reserved groove; the elastic piece is a spring sleeved on the outer circumference of the guide rod, and the two ends of the spring are respectively connected to the insertion end of the guide rod and the notch of the reserved groove, so that when the protrusion is inserted into the positioning groove, the spring is in a free state or an elastically compressed state.

5. The adjustable drawing board table according to claim 3, characterized in that: A sinking groove is provided on the inner side of the drawing board, and the swing arm is hinged in the sinking groove, so that when the drawing board is in the horizontal state, the lower side of the drawing board abuts against the bottom of the groove and the swing arm is embedded in the sinking groove.

6. The adjustable drawing board table according to claim 1, wherein: The telescopic member comprises: The base is used to support a horizontal surface, and its upper side has a plurality of sleeves arranged in parallel along a straight line and extending upward; the sleeves are all hollow inside and open upward, and each sleeve has a plurality of through-holes spaced apart in the vertical direction, and each through-hole is continuous along the straight line. A plurality of insertion rods are fixedly arranged on the lower side of the support platform, each of the insertion rods extends downward so as to be inserted into the plurality of the sleeves in a one-to-one correspondence; each of the insertion rods is provided with an alignment hole adapted to communicate with any corresponding one of the through holes; and The docking rod is suitable for being inserted into the mutually connected through-hole and the alignment hole along the straight direction to support the insertion rod and limit the relative movement of the insertion rod and the sleeve; and both ends of the docking rod have anti-slip end caps made of elastic material for abutting the outer wall of the sleeve.

7. The adjustable drawing board table according to claim 1, wherein: The upper side surface of the support platform is provided with a receiving groove for storing painting tools, and a blocking cover suitable for closing or avoiding the opening of the receiving groove is hingedly connected.

8. The adjustable drawing board table according to claim 1, wherein: The upper side of the support platform is provided with a strip groove extending in the front-to-back direction, and the writing board has a connecting shaft extending downward and slidingly embedded in the strip groove, so that the writing board can rotate around the connecting shaft and move synchronously with the connecting shaft.

9. The adjustable drawing board table according to claim 8, characterized in that: The bottom of the strip groove is provided with two limiting grooves, the writing board is provided with a through hole suitable for being coaxially connected to any one of the limiting grooves, and the through hole is inserted with a stop rod suitable for being inserted into the limiting groove to limit the rotation of the writing board.

10. The adjustable drawing board table according to claim 9, characterized in that: The writing board comprises: A first plate body is provided on the writing board, and the connecting shaft and the through hole are both provided on the first plate body; and a second plate body, detachably connected to the first plate body; When the first plate body rotates to the second plate body to avoid the swinging track of the drawing board, the second plate body is located outside the support platform.