An auxiliary device for interior design drawing

Abstract

The application discloses an auxiliary device for interior design drawing, which comprises a protective shell, a reciprocating wire rod, an air groove, an air suction one-way valve, a placing box and a circular magnetic sheet. A threaded rod is rotationally connected to the right end of the protective shell, the top end of the threaded rod is fixedly connected with a first bevel gear, the bottom end of the threaded rod is fixedly connected with a second bevel gear, the upper end outer surface of the threaded rod is threadedly connected with a threaded block, and the other end of the threaded block is fixedly connected with a workbench. The auxiliary device for interior design drawing is provided with a convenient storage structure. The telescopic legs at the bottom of the protective shell can be rotated out during use and stored up when not in use, so that the volume of the device is reduced. The workbench is arranged in the interior of the protective shell and can be extended out by rotating the adjuster. The interior of the workbench is provided with two placing boxes for placing drawing tools, which plays a role of tool transfer.

Description

Technical Field

[0001] This invention relates to the field of interior design drawing devices, specifically an auxiliary device for interior design drawing. Background Technology

[0002] Interior design mainly involves creating a functional, comfortable, and aesthetically pleasing interior environment that meets people's material and spiritual needs, based on the building's usage, environment, and relevant standards, using material and technical means and architectural design principles. When conducting interior design, it is necessary to manually draw design sketches, which requires the use of a drawing workbench.

[0003] In the prior art, Chinese Patent No. CN219396724U discloses an interior design drawing stand. This device facilitates fixing materials on the drawing board and allows for adjustment of the position according to the drafter's habits, eliminating the need to turn the head to view materials and improving drawing efficiency. It includes a drawing board, two sets of support plates, a base plate, an angle adjustment device, and a placement mechanism. The drawing board is mounted on the two sets of support plates via the angle adjustment device. The bottom ends of the two sets of support plates are connected to the top of the base plate. The bottom end of the base plate is equipped with four sets of rollers. The placement mechanism is mounted on the top of the drawing board and includes a magnetic plate, multiple sets of magnetic buckles, a connecting rod, a fixing block, a nut, a screw, a mounting block, a plug rod, a metal spring, and an adjustment component. The plug rod slides within a through hole in the mounting block. The metal spring is mounted on the rear end of the mounting block, and the metal spring is in close contact with the plug rod. The rear end of the connecting rod has a groove with teeth inside, and the plug rod engages with the teeth.

[0004] When using the interior design drawing stand, the aforementioned product includes a drawing board, two sets of support plates, a base plate, an angle adjustment device, and a placement mechanism. This allows the position to be adjusted according to the drawing person's habits, improving drawing efficiency. However, the drawing stand is large in size and cannot be folded for storage, making it inconvenient to carry. In addition, the drawing stand does not have a storage slot for placing items, so the user's drawing tools need to be stored separately, which is not convenient.

[0005] Chinese Patent CN211882789U discloses an interior design drawing frame, including a support box, a support plate, a drawing board, and an auxiliary plate. The support box has a first support tube fixedly installed at each of its four corners, and a second support tube is installed within the first support tube. The top of the second support tube is fixedly installed to the bottom of the support plate. The drawing board has T-shaped grooves at both ends. A T-shaped slider is fixedly installed on one side of the auxiliary plate, and the T-shaped slider can slide and engage with the T-shaped grooves. This invention features a first fixed tube fixedly installed on the outer wall of the support box, with a second fixed tube movably installed within it. The second fixed tube can be moved upwards from the first fixed tube and inserted into a mounting hole using a pin. By gripping the handle and using the casters, the support box can be moved, making operation convenient.

[0006] When using the above-mentioned product with an internal design drawing frame device, the internal design drawing frame includes a support box, a support plate, a drawing board, and an auxiliary plate. The inner cavity of the support box has a first support tube fixedly installed at the four corners, so that it can be inserted into the mounting hole by a pin. By holding the handle and using the casters, the support box can be moved, which is convenient to operate. However, during the process of designers drawing on the picture, the eraser shavings produced by the eraser on the picture will accumulate on the drawing platform, which needs to be manually handled, which is time-consuming and laborious. At the same time, the height of this design drawing frame cannot be adjusted to accommodate people of different heights.

[0007] To address the aforementioned issues, there is an urgent need for innovative designs based on the existing structures of auxiliary devices used for interior design drawings. Summary of the Invention

[0008] The purpose of this invention is to provide an auxiliary device for interior design drawing, in order to solve the problems mentioned in the background art, such as the large size of the design drawing stand, which cannot be folded for storage and is inconvenient to carry. In addition, the drawing stand does not have a storage slot for placing items, and the user's drawing tools need to be stored separately, which is not convenient. Furthermore, during the drawing process, eraser shavings produced by the eraser on the drawing platform will accumulate and need to be manually removed, which is time-consuming and laborious. At the same time, the design drawing stand cannot be adjusted in height to accommodate people of different heights.

[0009] The purpose of this invention is to provide an auxiliary device for interior design drawing, including a protective shell, a reciprocating screw, an air groove, a suction one-way valve, a placement box, and a circular magnetic sheet. A threaded rod is rotatably connected to the right end of the protective shell, and a first bevel gear is fixedly connected to the top end of the threaded rod, while a second bevel gear is fixedly connected to the bottom end of the threaded rod. A threaded block is threadedly connected to the upper outer surface of the threaded rod, and a worktable is fixedly connected to the other end of the threaded block. A sliding block is fixedly connected to the lower left end of the worktable. A sliding rod is fixedly connected to the left end of the protective shell, and a sliding block is slidably connected to the upper end of the sliding rod.

[0010] The lower right end of the protective shell is rotatably connected to a reciprocating screw, and the right end of the reciprocating screw is fixedly connected to a third bevel gear. The upper right end of the third bevel gear is meshed with a second bevel gear. A piston is threaded onto the threaded surface of the reciprocating screw. An air groove is opened inside the lower right end of the protective shell, and an air intake channel is fixedly connected to the upper left end of the air groove. An air intake one-way valve is installed inside the end of the air intake channel near the air groove. An air outlet channel is fixedly connected to the lower left end of the air groove, and an air outlet one-way valve is installed inside the end of the air outlet channel near the air groove.

[0011] A collection box is slidably installed inside the lower left end of the protective shell, and a through hole is opened at the right end of the collection box, and a first air outlet is opened at the left end of the collection box, and a second air outlet is opened at the lower left end of the protective shell.

[0012] The workbench has a sliding box inside, and a circular magnetic sheet is placed inside the upper box. A first telescopic rod is rotatably connected to the top of the workbench, and a second telescopic rod is slidably connected inside the first telescopic rod. A drawing table is fixedly connected to the top of the second telescopic rod, and an iron sheet is embedded inside the drawing table. A hollow groove is opened inside the front end of the drawing table.

[0013] Furthermore, a handle is fixedly installed on the left side surface of the protective shell, and pulleys are fixedly installed at equal angles on the right side surface of the protective shell. Telescopic legs are rotatably connected to the bottom two sides of the protective shell. The telescopic legs can be extended and retracted to adjust the height of the device to accommodate people of different heights, and the telescopic legs are easy to store.

[0014] Furthermore, a fourth bevel gear is rotatably connected inside the upper right end of the protective shell, and an adjuster is fixedly connected to the other end of the fourth bevel gear. The lower left end of the fourth bevel gear is meshed with a first bevel gear. The adjuster is rotatably connected to the protective shell, and the device can be stored by rotating the adjuster.

[0015] Furthermore, the threaded block and the threaded rod are connected by a threaded connection, and the threaded rod and the protective shell are connected by a rotatable connection. The second bevel gear and the third bevel gear are meshed together. The reciprocating screw and the protective shell are connected by a rotatable connection. The piston and the reciprocating screw are threaded together, and the piston is in close contact with the inner surface of the air groove. When the piston moves to the right in the air groove, the air groove draws in air. When the piston moves to the left in the air groove, the air groove exhausts air, thereby achieving the effect of automatically cleaning up garbage.

[0016] Furthermore, the workbench is configured with a sliding structure through a sliding block and a sliding rod, and the workbench is rotatably connected to the first telescopic rod. At the same time, two storage boxes are provided inside the workbench, which can be used to store items such as rulers, erasers, and pencils used for drawing, thus achieving a convenient effect.

[0017] Furthermore, the number of circular magnetic sheets is four, and the circular magnetic sheets and the iron sheet form an adsorption structure, thereby fixing the drawing paper.

[0018] Furthermore, the suction channel is connected to the air tank via a suction one-way valve, and the exhaust channel is connected to the air tank via an exhaust one-way valve, so that the suction channel can suck the garbage into the air tank.

[0019] Furthermore, the left end of the air outlet channel corresponds to the through hole, and the first air outlet corresponds to the second air outlet. The air outlet channel can blow garbage into the collection box.

[0020] Furthermore, the collection box and the protective shell form a sliding structure, and the collection box is a rectangular hollow structure when viewed from above, and the collection box can collect the waste generated during the drawing process.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This interior design drafting aid features a convenient storage structure. The telescopic legs at the bottom of the protective casing can be rotated out during use and folded away when not in use, reducing the device's size. Inside the protective casing is a worktable, normally located inside the casing. The user can extend the worktable by rotating an adjuster. The worktable contains two storage compartments for holding drafting tools, effectively serving as a tool transfer device. A handle is located on the left end of the worktable for easy lifting and transfer, while casters on the right end allow the device to be pushed like a suitcase. These features make this drafting aid easy to carry, achieving a convenient effect.

[0023] 2. This auxiliary device for interior design drawing includes a structure for collecting waste generated during the drawing process. The drawing table is angled, and the user places the drawing on the table and secures it with a circular magnetic piece; operation is simple. When the user erases the drawing with an eraser, the eraser debris slides down the tilted drawing table into a hollow groove. The debris then falls into the bottom of the protective casing. When the user retracts the device, the piston moves to the right, and the suction channel draws the debris into an air chamber. When the device is opened, the debris is blown out of the air chamber and into the collection box, thus achieving the effect of collecting waste.

[0024] 3. This auxiliary device for interior design drawing is equipped with a height-adjustable structure. The telescopic legs consist of two retractable rods, allowing the drawing auxiliary device to be adjusted in height to accommodate people of different heights. At the same time, there is also a telescopic relationship between the workbench and the protective shell, which can also be adjusted in height. Attached Figure Description

[0025] Figure 1 This is a front view structural diagram of the present invention;

[0026] Figure 2 This is a frontal cross-sectional view of the present invention.

[0027] Figure 3 This is a side view cross-sectional structural diagram of the present invention;

[0028] Figure 4 This is a top view of the workbench structure of the present invention;

[0029] Figure 5 This is a front sectional view of the telescopic tripod of the present invention.

[0030] Figure 6 This is a schematic diagram of the front cross-sectional structure of the air groove of the present invention;

[0031] Figure 7 This is a schematic diagram of the front cross-sectional structure of the collection box of the present invention;

[0032] Figure 8 This is a schematic diagram of the three-dimensional structure of the collection box of the present invention;

[0033] Figure 9 For the present invention Figure 2 A magnified structural diagram at point a in the diagram;

[0034] Figure 10 For the present invention Figure 2 A magnified structural diagram at point b in the diagram.

[0035] In the diagram: 1. Protective shell; 2. Threaded rod; 3. First bevel gear; 4. Second bevel gear; 5. Threaded block; 6. Workbench; 7. Sliding block; 8. Sliding rod; 9. Third bevel gear; 10. Reciprocating screw; 11. Piston; 12. Air groove; 13. Intake channel; 14. Intake check valve; 15. Exhaust channel; 16. Exhaust check valve; 17. Collection box; 18. Through hole; 19. First exhaust port; 20. Second exhaust port; 21. Placement box; 22. Circular magnetic sheet; 23. First telescopic rod; 24. Second telescopic rod; 25. Drawing table; 26. Iron sheet; 27. Hollow groove; 28. Pulley; 29. ​​Handle; 30. Telescopic legs; 31. Fourth bevel gear; 32. Adjuster. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1-10 The present invention provides a technical solution: an auxiliary device for interior design drawing, including a protective shell 1, a reciprocating lead screw 10, an air groove 12, an air intake one-way valve 14, a placement box 21 and a circular magnetic sheet 22. The right end of the protective shell 1 is rotatably connected to a threaded rod 2, and the top end of the threaded rod 2 is fixedly connected to a first bevel gear 3, and the bottom end of the threaded rod 2 is fixedly connected to a second bevel gear 4. The upper outer surface of the threaded rod 2 is threadedly connected to a threaded block 5, and the other end of the threaded block 5 is fixedly connected to a workbench 6. The lower left end of the workbench 6 is fixedly connected to a sliding block 7. The left end of the protective shell 1 is fixedly connected to a sliding rod 8, and the upper end of the sliding rod 8 is slidably connected to the sliding block 7.

[0038] The lower right end of the protective shell 1 is rotatably connected to a reciprocating screw 10, and the right end of the reciprocating screw 10 is fixedly connected to a third bevel gear 9. The upper right end of the third bevel gear 9 is meshed with a second bevel gear 4. The threaded surface of the reciprocating screw 10 is threadedly connected to a piston 11. The lower right end of the protective shell 1 is provided with an air groove 12, and the upper left end of the air groove 12 is fixedly connected to an air intake channel 13. An air intake check valve 14 is provided inside the end of the air intake channel 13 near the air groove 12. An air outlet channel 15 is fixedly connected to the lower left end of the air groove 12, and an air outlet check valve 16 is provided inside the end of the air outlet channel 15 near the air groove 12.

[0039] A collection box 17 is slidably installed inside the lower left end of the protective shell 1, and a through hole 18 is opened at the right end of the collection box 17, and a first air outlet 19 is opened at the left end of the collection box 17, and a second air outlet 20 is opened at the lower left end of the protective shell 1.

[0040] The workbench 6 has a sliding box 21 inside, and a circular magnetic sheet 22 is placed inside the upper box 21. The top of the workbench 6 is rotatably connected to a first telescopic rod 23, and the first telescopic rod 23 is slidably connected to a second telescopic rod 24. The top of the second telescopic rod 24 is fixedly connected to a drawing table 25, and an iron sheet 26 is embedded inside the drawing table 25. A hollow groove 27 is opened inside the front end of the drawing table 25.

[0041] A handle 29 is fixedly installed on the left side surface of the protective shell 1, and pulleys 28 are fixedly installed at equal angles on the right side surface of the protective shell 1. Telescopic feet 30 are rotatably connected to the bottom two sides of the protective shell 1. A fourth bevel gear 31 is rotatably connected to the upper right end of the protective shell 1, and an adjuster 32 is fixedly connected to the other end of the fourth bevel gear 31. A first bevel gear 3 is meshed with the lower left end of the fourth bevel gear 31. The adjuster 32 is rotatably connected to the protective shell 1. The threaded block 5 is threadedly connected to the threaded rod 2, and the threaded rod 2 is rotatably connected to the protective shell 1. The second bevel gear 4 is meshed with the third bevel gear 9. The reciprocating screw 10 is rotatably connected to the protective shell 1, and the piston 11 is threadedly connected to the reciprocating screw 10. The piston 11 is tightly attached to the inner surface of the air groove 12. The worktable 6 forms a sliding structure with the sliding block 7 and the sliding rod 8. The worktable 6 is rotatably connected to the first telescopic rod 23. At the same time, there are two placement boxes 21 inside the worktable 6. There are four circular magnetic pieces 22. The circular magnetic pieces 22 and the iron piece 26 form an adsorption structure. The air intake channel 13 forms a communication structure with the air groove 12 through the air intake one-way valve 14. The air outlet channel 15 forms a communication structure with the air groove 12 through the air outlet one-way valve 16. The left end of the air outlet channel 15 corresponds to the through hole 18. The first air outlet 19 corresponds to the second air outlet 20. The collection box 17 and the protective shell 1 form a sliding structure. The collection box 17 is a rectangular hollow structure when viewed from above.

[0042] according to Figures 1-10First, the user places the device in the desired working position. The user rotates the telescopic legs 30 at the bottom of the protective shell 1 90 degrees to face vertically downwards. The telescopic legs 30 consists of two retractable rods, and the user can adjust the height as needed. After placing the telescopic legs 30 on the ground, the user locates the adjuster 32 on the right side of the protective shell 1 and rotates it, thereby rotating the fourth bevel gear 31. The fourth bevel gear 31 meshes with the first bevel gear 3, thereby rotating the first bevel gear 3. The rotation of the first bevel gear 3 drives the threaded rod 2 to rotate, and the threaded block 5 of the threaded rod 2 begins to move upwards, thereby moving the worktable 6 upwards. The sliding block 7 connected to the left side of the worktable 6 slides on the sliding rod 8. When the threaded block 5 moves to the top of the threaded rod 2, the worktable 6 is fully exposed, making it convenient for the designer to use. When the threaded rod 2 rotates, causing the threaded block 5 to move upwards, the second bevel gear 4 at the bottom of the threaded rod 2 also rotates. The second bevel gear 4 meshes with the third bevel gear 9, causing the third bevel gear 9 to rotate. When the third bevel gear 9 rotates, it drives the reciprocating screw 10 to rotate. At this time, the piston 11 is located at the right end of the thread of the reciprocating screw 10. When the worktable 6 rises, the piston 11 moves to the left on the thread of the reciprocating screw 10. The piston 11 moves to the left until it reaches the left side of the thread of the reciprocating screw 10. When the piston 11 moves to the left, it will compress the air in the air groove 12. The air enters the collection box 17 through the exhaust one-way valve 16 and the exhaust channel 15. After the worktable 6 is raised, the user holds both ends of the drawing table 25. The drawing table 25 drives the second telescopic rod 24 to extend and retract in the first telescopic rod 23. The first telescopic rod 23 is rotatably connected to the worktable 6. The user adjusts the angle of the drawing table 25 through the first telescopic rod 23. The workbench 6 has two storage boxes 21 inside, which can hold items used for drawing, such as rulers, erasers, and pencils, thus achieving a storage effect. The upper storage box 21 contains four circular magnetic pieces 22. The circular magnetic pieces 22 form an adsorption effect with the iron piece 26 inside the drawing table 25. The circular magnetic pieces 22 can adsorb and hold the drawings on the drawing table 25, thus achieving the effect of fixing the drawings. When a designer makes a mistake on a drawing and erases it with an eraser, the eraser shavings slide down the tilted drawing table 25 into the hollow groove 27. The eraser shavings then fall into the bottom of the protective shell 1 through the hollow groove 27. When the user finishes working and wants to store the worktable 6, the user reverses the adjuster 32, causing the worktable 6 to be stored in the protective shell 1. During storage, the reciprocating screw 10 rotates, causing the piston 11 to move to the right. The air intake channel 13 draws the eraser shavings from the bottom of the protective shell 1 into the air groove 12. At this time, the air groove 12 contains eraser shavings. When the designer uses the device again, the worktable 6 rises, and the piston 11 moves to the left side of the thread of the reciprocating screw 10. When the piston 11 moves to the left, it compresses the air in the air groove 12. The air, carrying the eraser shavings, enters the collection box 17 through the exhaust one-way valve 16 and the exhaust channel 15. The collection box 17 collects the eraser shavings, preventing pollution of the working environment.The workbench 6 of the device can be stored in the protective shell 1, and the telescopic legs 30 can be folded into the bottom of the protective shell 1, thereby reducing the size. The design of the handle 29 and the pulley 28 makes the device easy to carry and achieves a convenient effect.

[0043] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An auxiliary device for interior design drawing, comprising a protective shell (1), a reciprocating lead screw (10), an air groove (12), a suction one-way valve (14), a placement box (21), and a circular magnetic sheet (22), characterized in that: The protective shell (1) is rotatably connected to the right end of a threaded rod (2), and the top end of the threaded rod (2) is fixedly connected to a first bevel gear (3), and the bottom end of the threaded rod (2) is fixedly connected to a second bevel gear (4). The upper outer surface of the threaded rod (2) is threadedly connected to a threaded block (5), and the other end of the threaded block (5) is fixedly connected to a workbench (6). The lower left end of the workbench (6) is fixedly connected to a sliding block (7). The left end of the protective shell (1) is fixedly connected to a sliding rod (8), and the upper end of the sliding rod (8) is slidably connected to a sliding block (7). The lower right end of the protective shell (1) is rotatably connected to a reciprocating screw (10), and the right end of the reciprocating screw (10) is fixedly connected to a third bevel gear (9), and the upper right end of the third bevel gear (9) is meshed with a second bevel gear (4). The threaded surface of the reciprocating screw (10) is threadedly connected to a piston (11). The lower right end of the protective shell (1) is provided with an air groove (12), and the upper left end of the air groove (12) is fixedly connected to an air intake channel (13). An air intake one-way valve (14) is provided inside the end of the air intake channel (13) near the air groove (12). An air outlet channel (15) is fixedly connected to the lower left end of the air groove (12), and an air outlet one-way valve (16) is provided inside the end of the air outlet channel (15) near the air groove (12). A collection box (17) is slidably installed inside the lower left end of the protective shell (1), and a through hole (18) is opened at the right end of the collection box (17), and a first air outlet (19) is opened at the left end of the collection box (17), and a second air outlet (20) is opened at the lower left end of the protective shell (1). The workbench (6) has a sliding box (21) inside, and a circular magnetic sheet (22) is placed inside the upper box (21). The top of the workbench (6) is rotatably connected to a first telescopic rod (23), and the first telescopic rod (23) is slidably connected to a second telescopic rod (24). The top of the second telescopic rod (24) is fixedly connected to a drawing table (25), and an iron sheet (26) is embedded inside the drawing table (25). A hollow groove (27) is opened inside the front end of the drawing table (25).

2. The auxiliary device for interior design drawing according to claim 1, characterized in that: A handle (29) is fixedly installed on the left side surface of the protective shell (1), and a pulley (28) is fixedly installed at an equal angle on the right side surface of the protective shell (1). Telescopic feet (30) are rotatably connected to the bottom two sides of the protective shell (1).

3. The auxiliary device for interior design drawing according to claim 1, characterized in that: The upper right end of the protective shell (1) is rotatably connected to a fourth bevel gear (31), and the other end of the fourth bevel gear (31) is fixedly connected to an adjuster (32). The lower left end of the fourth bevel gear (31) is meshed with a first bevel gear (3), and the adjuster (32) is rotatably connected to the protective shell (1).

4. The auxiliary device for interior design drawing according to claim 1, characterized in that: The threaded block (5) is connected to the threaded rod (2) by a threaded connection, and the threaded rod (2) is connected to the protective shell (1) by a rotatable connection. The second bevel gear (4) is meshed with the third bevel gear (9). The reciprocating screw (10) is connected to the protective shell (1) by a rotatable connection. The piston (11) is threaded to the reciprocating screw (10), and the piston (11) is in close contact with the inner surface of the air groove (12).

5. The auxiliary device for interior design drawing according to claim 1, characterized in that: The workbench (6) forms a sliding structure through the sliding block (7) and the sliding rod (8), and the workbench (6) is rotatably connected to the first telescopic rod (23). At the same time, two boxes (21) are set inside the workbench (6).

6. The auxiliary device for interior design drawing according to claim 1, characterized in that: The number of the circular magnetic sheets (22) is four, and the circular magnetic sheets (22) and the iron sheet (26) form an adsorption structure.

7. The auxiliary device for interior design drawing according to claim 1, characterized in that: The air intake channel (13) is connected to the air groove (12) through the air intake check valve (14), and the air outlet channel (15) is connected to the air groove (12) through the air outlet check valve (16).

8. The auxiliary device for interior design drawing according to claim 1, characterized in that: The left end of the air outlet (15) corresponds to the through hole (18), and the first air outlet (19) corresponds to the second air outlet (20).

9. The auxiliary device for interior design drawing according to claim 1, characterized in that: The collection box (17) and the protective shell (1) form a sliding structure, and the collection box (17) is a rectangular hollow structure when viewed from above.

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